Rodrigo Hermont Cançado

Possui Graduação em Odontologia pela Faculdade de Odontologia de Bauru da Universidade de São Paulo (FOB/USP) (1997), Mestrado em Ortodontia pela Faculdade de Odontologia de Bauru da Universidade de São Paulo(FOB/USP) (2003), Doutorado em Ortodontia pela Faculdade de Odontologia de Bauru da Universidade de São Paulo (FOB/USP) (2005), Pós-Doutorado em Ortodontia pela Universidade de Toronto, Canadá (2012). Atualmente é Professor Adjunto C, Nível 1 da Disciplina de Ortodontia do Departamento de Odontologia Restauradora (ODR) da Faculdade de Odontologia da Universidade Federal de Minas Gerais (UFMG). Revisor dos periódicos: American Journal of Orthodontics and Dentofacial Orthopedics, The Angle Orthodontist, European Journal of Orthodontics, Journal of Orthodontics, Head & Face Medicine, Journal of Applied Oral Science, Ortho Science, Revista Uningá, Journal of Orthodontics and Endodontics, BMC Oral Health, Journal of Oral and Maxillofacial Research, Journal of Orthodontic Research e Braz

EDUCATION

DDS at Bauru School of Dentistry, University of São Paulo
MSc in Orthodontics at Bauru School of Dentistry, University of São Paulo
PhD in Orthodontics at Bauru School of Dentistry, University of São Paulo
Pós-Doutorado in Orthodontics at University of Toronto

RESEARCH INTERESTS

Ortodontia, Ortopedia Facial, resultado de tratamento, fio ortodôntico, diagnóstico ortodôntico, plano de tratamento, má oclusão de Classe II, má oclusão de Classe III.

Scopus Publications

Profile changes after class II treatment with twin force appliance in patients with different facial patterns
Lucimar Schimmack Pedro, Karina Maria Salvatore Freitas, Adriano Garcia Bandeca, Renata Cristina Oliveira, Ricardo Gobbi Oliveira, Fabrício Pinelli Valarelli, Paula Cotrin, and Rodrigo Hermont Cançado
Informa UK Limited



Efficacy of Low-Level Laser Therapy in Reducing Pain in the Initial Stages of Orthodontic Treatment
Manoel Heitor Brito, Cinthya Quagliato Nogueira, Paula Cotrin, Tiago Fialho, Renata Cristina Oliveira, Ricardo Gobbi Oliveira, Samira Salmeron, Fabrício Pinelli Valarelli, Karina Maria Salvatore Freitas, and Rodrigo Hermont Cançado
Hindawi Limited
Purpose. There is no consensus about the mechanism and efficacy in alleviating pain of the lower-level laser therapy (LLLT) during orthodontic treatment. This study aimed to evaluate the LLLT effectiveness clinically in reducing pain caused by orthodontic movement that occurs in the early stages of treatment. Methods. The sample consisted of 54 patients in need of orthodontic treatment divided into two groups. A 28 experimental patients group (initial mean age: 26.84 years old) was undergone gallium-aluminum-arsenide infrared laser application on 12 points for each tooth immediately after the installation of the first alignment archwire, and a 26 patients control group (initial mean age: 29.13 years old) was undergone to no pain control intervention at all. Pain intensity was measured by using a visual analog scale, which was marked pain level (mm) reported in 06, 24, 48, and 72 hours. The perception of pain (beginning, peak, decline, and absence) was evaluated by filling up a questionnaire. To compare the intensity and perception of pain between groups, a nonparametric Mann–Whitney has been performed. Results. The experimental group showed levels (mm) at 6 ( p < 0.001 ), 24 ( p = 0.004 ), and 48 hours ( p = 0.007 ) and perception of pain (hours) in the peak ( p = 0.026 ), decline ( p = 0.025 ), and absence ( p = 0.008 ) significantly lower compared to the group control. Conclusion. Low-level laser therapy is effective in reducing pain severity caused by orthodontic forces activation, and it promotes the analgesic action lasting effect during the most painful feeling time.


Soft tissue profile changes in Angle class II patients treated with Twin Force or intermaxillary elastics—a comparison
Izabel Cristina de Mendonça Campos Falcão, Fabricio Pinelli Valarelli, Luiz Filiphe Gonçalves Canuto, Renata Cristina Oliveira, Ricardo Cesar Gobbi de Oliveira, Rodrigo Hermont Cançado, and Karina Maria Salvatore Freitas
Springer Science and Business Media LLC
PROPOSITION This study aimed to compare soft tissue profile changes in Angle class II malocclusion patients treated with a Twin Force appliance (Ortho Organizers, Inc., Carlsbad, CA, USA) or class II elastics. METHODS The sample comprised 47 class II malocclusion patients treated orthodontically without extractions, divided into two groups. Group 1 (Twin Force): 25 patients were treated with the Twin Force, with initial and final mean ages of 17.91 and 20.45 years, respectively, and mean treatment time of 2.53 years. Group 2 (elastics): 22 patients were treated with class II elastics, with initial and final mean age of 15.87 and 18.63 years, respectively, and mean treatment time of 2.75 years. The lateral cephalograms were evaluated at the initial and final stages. Intragroup comparisons were performed with dependent t-tests and intergroup comparisons were performed with independent t-tests. RESULTS Treatment-related changes in the Twin Force group included reduction of facial convexity, retrusion of the upper lip, increase of the H‑Nose distance, and decrease in Sn‑H distance, indicating improvement in facial profile. In the elastics group, treatment resulted in an increase in nasolabial angle, retrusion of the upper lip, increase of the H‑Nose distance, and decrease in Sn‑H distance, indicating improvement in facial profile. The Twin Force group showed a greater reduction of the facial convexity with treatment than the elastics group. CONCLUSIONS Class II patients treated with the Twin Force appliance showed greater reduction in facial convexity than patients treated with class II elastics. The other soft tissue changes were similar for both groups.


Treatment effects of the herbst appliance in class II malocclusion patients after the growth peak
Rodrigo Hermont Cançado, Guilherme Janson, Bryan Tompson, José Carlos de Castro Alvares, Fabrício Pinelli Valarelli, and Karina Maria Salvatore Freitas
Georg Thieme Verlag KG
Abstract Objective The aim of this study was to evaluate dentoskeletal changes in the treatment of Class II malocclusion with the Herbst Cantilever Bite Jumper (CBJ) appliance, associated with multibracket appliances after the growth peak, at pretreatment. Materials and Methods  A sample of 37 individuals was divided into two groups: the experimental group comprised 16 patients treated consecutively for a mean period of 2.52 years with the Herbst CBJ appliance associated with multibracket appliances. A total of 21 subjects (10 males and 11 females) with Class II malocclusion and mean age at T1 of 16.08 years were followed for a mean period of 2.12 years composed the control group. Comparisons between the two groups were performed using initial and final lateral cephalograms. Comparisons between experimental and control groups at pretreatment and of the treatment changes were performed by Mann–Whitney or independent t-tests. Results Experimental group exhibited a significantly greater labial inclination of the mandibular incisors in comparison to the control group. Additionally, significantly greater corrections in overbite, overjet, and molar relationship were observed in the experimental than in the control groups. Conclusion The effects of the Herbst CBJ appliance, associated with fixed appliances after the growth peak in Class II malocclusion treatment are correction in molar relationship toward a Class I relationship, decrease of the overjet, decrease of the overbite, and mandibular incisors labial inclination.


Attractiveness of the facial profile: Comparison of Class II patients treated with twin force® or intermaxillary elastics
Otávio Augusto POZZA, Rodrigo Hermont CANÇADO, Fabricio Pinelli VALARELLI, Karina Maria Salvatore FREITAS, Renata Cristina OLIVEIRA, and Ricardo Cesar Gobbi de OLIVEIRA
FapUNIFESP (SciELO)
ABSTRACT Objective: To compare the facial profile attractiveness of Class II patients treated with Twin Force® or intermaxillary elastics. Methods: Sample comprised 47 Class II patients divided into two groups: G1) TWIN FORCE - 25 patients treated with fixed appliances and Twin Force® fixed functional appliance (mean initial age was 17.91 ± 7.13 years, mean final age was 20.45 ± 7.18 years, and mean treatment time was 2.53 ± 0.83 years); G2) ELASTICS - 22 patients treated with fixed appliances and Class II intermaxillary elastics (mean initial age was 15.87 ± 5.64 years, mean final age was 18.63 ± 5.79 years and mean treatment time was 2.75 ± 0.60 years). Lateral cephalograms from pretreatment and posttreatment were used. Cephalometric variables were measured and silhouettes of facial profile were constructed and evaluated by 48 laypeople and 63 orthodontists, rating the attractiveness from 0 (most unattractive profile) to 10 (most attractive profile). Intergroup comparisons were performed with Mann-Whitney and independent t-tests. Results: At pretreatment, facial profile of the Twin Force® group was less attractive than the Elastics group. Treatment with Twin Force® or Class II elastics resulted in similar facial profile attractiveness, but the facial convexity was more reduced in the Twin Force® group. Orthodontists were more critical than laypeople. Conclusions: Treatment with Twin Force® or Class II elastics produced similar facial profile attractiveness at posttreatment. Profile attractiveness was reduced with treatment in the elastic group, and improved in the Twin Force® group. Facial convexity was more reduced with treatment in the Twin Force® group.


Attractiveness of different esthetic orthodontic wires
Deric Meschiari Batista, Melissa Faccini, F. P. Valarelli, Rodrigo Hermont Cançado, Renata Cristina Oliveira, Ricardo Cesar Gobbi de Oliveira and K. M. S. Freitas

OBJECTIVE The aim of this study was to evaluate the attractiveness of different types of esthetic orthodontic wires by laypeople and dentists. METHODS Five different types of orthodontic wires were evaluated: three esthetic wires (Teflon-coated, epoxy resin-coated and rhodium-coated wires), and two metallic wires (stainless steel and NiTi), as control. Monocrystalline ceramic brackets were installed in the maxillary arch of a patient presenting good dental alignment. The five evaluated wires were attached to the orthodontic appliance with an esthetic silicone elastic and photographed. The photographs were evaluated by 163 individuals, 110 dentists and 53 laypeople. The data were statistically evaluated by two-way ANOVA and one-way ANOVA, followed by Tukey tests. RESULTS There was a statistically significant difference in the attractiveness among the wires evaluated; the most esthetic was the rhodium-coated wire, followed by the epoxy resin-coated wire and, finally, the Teflon-coated wire, with no significant difference from the stainless steel and NiTi control archwires. There was no significant difference between the groups of evaluators. CONCLUSION The most attractive was the rhodium-coated wire, followed by the epoxy resin-coated wire and, finally, the least attractive wire was the Teflon-coated wire, without statistically significant difference to the stainless steel and NiTi wires, used as control.


Evaluation of the influence of mandibular third molars on mandibular anterior crowding relapse
Paula Cotrin, Karina Maria Salvatore Freitas, Marcos Roberto Freitas, Fabrício Pinelli Valarelli, Rodrigo Hermont Cançado, and Guilherme Janson
Informa UK Limited
Abstract Objective: To evaluate the influence of mandibular third molars on relapse of mandibular anterior crowding in orthodontically treated patients. Material and Methods: Sample included orthodontic records of 108 patients: Group 1: 72 patients (39 female; 33 male) with third molars present in the postretention evaluation stage. Group 2: 36 patients (18 female; 18 male) who did not present the third molars in the postretention evaluation stage. Panoramic radiographs and dental models were evaluated at three different stages: pre-treatment; posttreatment and postretention. Panoramic radiographs showed the presence or absence of third molars in the 3 evaluated stages and on the dental models, overbite and mandibular anterior crowding was measured by the Little Irregularity Index. For intergroup comparisons, t-tests and a multifactorial regression analysis were used. Results: There was no statistically significant difference in the relapse of mandibular anterior crowding among the groups with and without mandibular third molars at the postretention stage. Conclusion: The presence or absence of mandibular third molars did not influence the relapse of mandibular anterior crowding in orthodontically treated patients.


Comparison of botulinum toxin and orthognathic surgery for gummy smile correction
Carlos Roberto Dutra, Paula Patricia Primo, Daniel Salvatore de Freitas, Renata Cristina Oliveira, Ricardo Cesar Gobbi de Oliveira, Karina Maria Salvatore Freitas, Fabricio Pinelli Valarelli, and Rodrigo Hermont Cançado
Bentham Science Publishers Ltd.
Objective: This study aimed to compare the changes in the gummy smile in cases treated with botulinum toxin (BTX) application or orthognathic surgery. Methods: The retrospective sample comprised 61 subjects with gummy smile divided into 2 groups according to treatment received for gummy smile correction: 1-38 patients (6 male; 32 female), at a mean age of 28.60 years (s.d.=6.09), treated with BTX application; 2- 23 patients (7 males and 16 females) at a mean age of 29.59 years (s.d.=5.72) treated with orthognathic surgery. Patients from the BTX group refused to undergo orthognathic surgery. The measurement of the gingival exposure was performed in extraoral photographs of the posed smile, before and after treatment, and it was defined as the difference between the stomion of the upper lip and the incisal edge of the maxillary central incisor minus the height of maxillary central incisor obtained in the patient's dental casts. The data were obtained before (T1) and after treatment (T2) and change of gingival exposure with treatment (T2-T1). Intergroup comparison of gummy smile was performed with independent t-tests. Results: The surgical group presented significantly greater correction of the gummy smile with treatment than the BTX group. Conclusion: Gummy smile presented a greater improvement in patients treated with orthognathic surgery than with botulinum toxin application.


Comparison of Profile Attractiveness between Class III Orthodontic Camouflage and Predictive Tracing of Orthognathic Surgery
Mohamad Nagi Bou Wadi, Karina Maria Salvatore Freitas, Daniel Salvatore Freitas, Rodrigo Hermont Cançado, Renata Cristina Gobbi de Oliveira, Ricardo Cesar Gobbi de Oliveira, Guilherme Janson, and Fabricio Pinelli Valarelli
Hindawi Limited
Objective. The aim of this study was to compare the profile attractiveness between orthodontic camouflage of the Class III malocclusion and the predictive tracing simulating orthognathic surgery evaluated by dentists and laypeople. Settings and sample population. The sample consisted of 21 patients (9 male; 12 female) with Class III malocclusion treated with orthodontic camouflage and Class III intermaxillary elastics. Material and Methods. The mean initial age of the patients was 24.38 years (SD 3.32), and the mean ANB angle was −1.91° (SD 0.83°). Patients presented skeletal Class III and normal growth patterns. Initial and final lateral cephalograms of each patient were used. The initial cephalogram was used to perform the treatment simulation of orthognathic surgery, and its silhouette was compared to the silhouette obtained from the final cephalogram after Class III orthodontic camouflage. A subjective analysis of profile attractiveness was performed by 47 laypeople and 60 dentists, with scores from 1 (less attractive) to 10 (most attractive). Mann–Whitney tests were used to compare profile attractiveness between the orthodontic treatment and the predictive tracing groups and between dentists and laypeople. Results. The predictive tracing of orthognathic surgery showed to be statistically significantly more attractive (mean score 4.57, SD 2.47) than that of the Class III camouflage orthodontic treatment (mean score 4.22, SD 2.40), with a mean numerical but significant difference of 0.35 (SD 2.01) (P<0.001). Laypeople were more critical than dentists in evaluating profile attractiveness, but numerical difference between the groups was also small. Conclusion. The profile silhouette of predictive tracing simulating orthognathic surgery showed to be more attractive than that of Class III camouflage orthodontic treatment; however, differences were small but statistically significant. Laypeople showed to be more critical than dentists.


Comparison of the facial profile attractiveness in Class III borderline patients after surgical or compensatory orthodontic treatment
J. Watanabe, F. Fitarelli, D. de Freitas, R. Cançado, R. de Oliveira, R. de Oliveira, F. Valarelli, and K. Freitas
Medicina Oral, S.L.
Background This study aimed to compare the facial profile attractiveness of Class III borderline patients after surgical or compensatory orthodontic treatment. Material and Methods The sample consisted of 60 borderline Class III malocclusion patients, divided into two groups: Group 1 (Surgical): 30 patients (16 male; 14 female) treated with orthodontic fixed appliances and bimaxillary orthognathic surgery. Mean initial age was 20.05 years (s.d.=2.40) and mean treatment time was 2.23 years (s.d.=0.82). Group 2 (Compensatory): 30 patients (13 male; 17 female) treated compensatorily with fixed appliances and Class III elastics. Mean initial age was 18.53 years (s.d.=4.35) and mean treatment time was 2.08 years (s.d.=0.67). Silhouettes of the facial profile were constructed obtained from the pretreatment and posttreatment lateral cephalograms and evaluated by orthodontists (N=41, 22 females and 19 males, mean age of 35.65 years), assigning scores from 1 (least attractive) to 10 (most attractive). Intergroup comparison of profile attractiveness was performed by Mann-Whitney test. For intragroup comparison of initial and final stages, the Wilcoxon test was used. Results At initial stage, the compensatory group presented a statistically significant greater attractiveness of the profile than the surgical group. With treatment, the surgical group presented significantly more improvement in facial profile than the compensatory group. At the final stage, profile attractiveness of surgical and compensatory groups was similar. Conclusions The facial profile attractiveness is similar in Class III patients after orthognathic surgery or compensatory orthodontic treatment. However, surgery provided more improvement in profile attractiveness than the compensatory treatment in Class III patients. Key words:Malocclusion, angle Class III, orthognathic surgery, corrective orthodontics.


Level of satisfaction in the use of the wraparound Hawley and thermoplastic maxillary retainers
Adenilson Silva Chagas, Karina Maria Salvatore Freitas, Rodrigo Hermont Cançado, Fabricio Pinelli Valarelli, Luiz Filiphe Gonçalves Canuto, Renata Cristina Gobbi de Oliveira, and Ricardo Cesar Gobbi de Oliveira
The Angle Orthodontist (EH Angle Education & Research Foundation)
ABSTRACT Objective To compare the level of satisfaction in the use of wraparound Hawley and thermoplastic maxillary retainers. Materials and Methods The study sample included 70 orthodontic patients (24 males and 46 females), who were in the retention stage (mean age = 20.80 years). All patients wore the two types of maxillary retainer for 1 month each, along with a 3×3 fixed mandibular retainer. After the use of each retainer, the patients responded to a questionnaire evaluating the level of satisfaction with their use of the maxillary retainer. Intergroup comparison was performed by independent t tests. Chi-square test was used to evaluate preference for the type of retainer by gender. Results The thermoplastic retainer was better for swallowing and the wraparound Hawley appliance was better for hygiene and durability. The other factors evaluated (adaptation, speech, comfort, esthetics, satisfaction, and fitting) did not show significant differences between the retainers. There was also no significant difference in preference for the appliances. Conclusions Regarding the overall satisfaction and the preference, there was no difference between the wraparound Hawley and thermoplastic retainers. The wraparound Hawley appliance was better in hygiene and resistance than the thermoplastic retainer; and the thermoplastic appliance was better than the wraparound Hawley for swallowing fluids and saliva.


Comparison of torque expression in esthetic brackets
K Martelli, KMS Freitas, PO Negreiros, G Janson, RH Cancado, FP Valarelli, and MR de Freitas
Medicina Oral, S.L.
Background The objective of this work is to test the null hypothesis that there is no difference in the torque expression among different esthetic brackets. Material and Methods Five ceramic self-ligating brackets (In-Ovation C – GAC, Damon Clear–Ormco, QuicKlear-Forestadent, Click-It -TP Orthodontics, Clarity SL-3M Unitek) and 4 ceramic conventional brackets (Inspire Ice–Ormco, InVu Ceramic-TP Orthodontics, Ceramic Roth–Morelli, Clarity Metal-Reinforced Ceramic Bracket-3M Unitek) were selected. Metallic Damon MX self-ligating bracket (Ormco) was used as control. Third-order moments were measured at 12º, 24º and 36º using an archwire torsion device associated with a Universal Testing Machine (EMIC DL2000), with 0.019x0.025-inch stainless steel wire. Anova followed by Tukey tests were used for intergroup comparisons. Results In all tested angulations the Damon Clear bracket presented the highest torque expression, followed by Clarity, Clarity SL and Damon Mx brackets, with the worst torque expression shown by the InVu Ceramic bracket. The InVu Ceramic demonstrated the largest while the Damon Clear brackets demonstrated the smallest slot height and clearance. Conclusions The null hypothesis was rejected since torque expression was different among the esthetic brackets evaluated. It was also concluded that the slot height is directly related to torque expression. Key words:Torque, orthodontic brackets, orthodontic appliances, incisor, ceramics.


Comparison of WALA ridge and dental arch dimensions changes after orthodontic treatment using a passive self-ligating system or conventional fixed appliance
Paula Cotrin, Tarso Esteves, KarinaMaria Salvatore Freitas, Darwin Vaz de Lima, RodrigoHermont Cançado, FabrícioPinelli Valarelli, MarcosRoberto De Freitas, and RenataCristina Gobbi de Oliveira
Medknow
Objective: To compare changes in WALA ridge and mandibular dental arch dimensions in orthodontic patients treated with a passive self-ligating system and conventional appliances. Design: Original paper. Setting: Orthodontic department at Inga University Center, Maringá, PR, Brazil. Materials and Methods: Pretreatment (T1) and posttreatment (T2) dental casts of 60 patients with Class I malocclusion treated with slight to moderate crowding that were divided into two groups. Group 1: 30 patients treated with a passive self-ligating system, at a mean initial age of 17.68 years and mean treatment time of 2.31 years. Group 2: 30 patients treated with conventional appliances, at a mean initial age of 19.23 years and mean treatment time of 2.56 years. Measurements were taken using a digital caliper directly on pre and posttreatment dental casts to evaluate the transversal dimension behavior of the mandibular dental arch and the WALA ridge width. Results: Self-ligating group presented an increase in WALA ridge width and mandibular transversal dimensions significantly greater than the conventional group, with the exception of intermolar cusp tip distance and intercanine WALA ridge. There was no statistically significant difference between the groups. There was also observed a significantly greater increase of the transversal buccal axis dimensions in the premolar area when compared to the WALA ridge increase in both groups. Conclusions: Treatment with a passive self-ligating system resulted in a significantly greater increase of the WALA ridge width and mandibular arch dimensions when compared to conventional appliance.


Comparison of the force released by intermaxillary elastics used for different time periods
Andressa Tribulato Lopes Nitrini, , Adenilson Silva Chagas, Karina Maria Salvatore Freitas, Fabrício Pinelli Valarelli, Rodrigo Hermont Cancado, Renata Cristina Gobbi de Oliveira, Ricardo Cesar Gobbi de Oliveira, , ,et al.
AVES Publishing Co.
Objective The objective of the present study was to compare the strength degradation of the force of intermaxillary elastic used for different periods. Methods The sample included intermaxillary elastics used for 20 adult patients with bilateral Class II or III malocclusion in orthodontic treatment with fixed appliances, with a mean age of 27.25 years. Latex orthodontic elastics with 3/16 inch of diameter were used, with an average stretching of three times its diameter. The elastics were used in the same patient bilaterally for different periods, with each pair of elastics used for 1, 12, 24, and 48h. Thus, the sample consisted of 200 elastics, with 40 being used in each period (one pair used by each patient) and 40 new elastics without use tested as control. Elastics were tested using a universal testing machine, stretched with a velocity of 30 mm/min, and the force was evaluated in stretches of 15, 20, 25, and 30 mm. The degradation force was compared in the four different times of use and control by one-way ANOVA (analysis of variance) and Tukey tests. Results There were significant differences among the groups in all evaluated stretches (15, 20, 25, and 30 mm). The control elastics presented higher average forces numerically and statistically significant for all tested times, except for the elastic used for 1h. The elastics used for 1, 12, and 24h had similar forces among them, with a significant difference to the elastics used for 48h. Conclusion It is recommended to change the intermaxillary elastics after 24 h of use.


The role of molar intrusion on prosthetics rehabilitation in mandibular teeth
Carolina Nazif Rasul, Fabrício Valarelli, Leonardo Graboski de Castro, Karina Maria Salvatore de Freitas, and Rodrigo Hermont Cançado
Dental Press International
Introdução: quando ocorre perda de molares inferiores, é comum observar- se extrusão do antagonista, com redução do espaço interoclusal necessário para a reabilitação protética. Nesses casos, a aplicação do mini-implante como ancoragem esquelética absoluta tem se mostrado de extrema valia, por ser versátil e apresentar benefícios tanto para o paciente quanto para o ortodontista, tornando o movimento de intrusão cada vez menos complexos. Métodos: o presente trabalho apresenta o caso de uma paciente com 33 anos de idade, com extrusão do dente #17 no espaço interoclusal dos molares inferiores ausentes no lado direito. A intrusão foi realizada usando-se mini-implante como ancoragem. Resultados: o dente #17 apresentou intrusão real de 1,5mm e, após a remoção do aparelho, foi realizada a reabilitação protética com implantes na arcada inferior. Conclusão: observou-se que a utilização de mini-implantes foi eficaz para a intrusão do molar superior, tornando-se um valioso recurso para tratar a extrusão de dentes posteriores em decorrência de perdas dentárias na arcada antagonista, e recuperar o espaço interoclusal necessário à reabilitação protética do paciente.


Effect of clinical use and sterilization process on the transition temperature range of thermally NiTi alloys
Bruno da Silva Vieira, Rodrigo H. Cançado, Karina M.S. Freitas, Fabrício P. Valarelli, Renata C. Gobbi, and Ricardo C. Gobbi de Oliveira
Bentham Science Publishers Ltd.
Background: Thermally activated nickel-titanium wires have been widely used by orthodontists due to more constant forces, generation over longer activation spans, greater resistance to permanent deformation, superelasticity characteristics when cyclically loaded, better spring-back and less hysteresis. Objective: The purpose of this study was to evaluate the influence of clinical use and sterilization process on the Transition Temperature Range (TTR) of thermoset nickel-titanium wires using Differential Scanning Calorimetry (DSC). Methods: Sections from four nickel-titanium wires (0.019 × 0.025-inch) belonging to four different brands were assessed in four different states. Two of the wires were assessed in the “as received” state, one after 60 days of clinical use, and one after 60 days of clinical use and subjected to a sterilization process (autoclaving). The segments of each archwire were tested using DSC at temperatures ranging from −80°C to 150°C at a rate of 10°C/min. Results: All the nickel-titanium memory thermoset wires presented with desirable property for clinical use. The shape memory property was not influenced by clinical use and sterilization process. Conclusion: There was no change in TTR of the nickel-titanium wires after clinical use and sterilization.


Evaluation of the attractiveness of different gingival zeniths in smile esthetics
Suzy Nomura, Karina Maria Salvatore Freitas, Paula Patrícia Cotrin da Silva, Fabricio Pinelli Valarelli, Rodrigo Hermont Cançado, Marcos Roberto de Freitas, Renata Cristina Gobbi de Oliveira, and Ricardo Cesar Gobbi de Oliveira
FapUNIFESP (SciELO)
ABSTRACT Objective: To evaluate the smile attractiveness of different gingival zeniths by general dentists, orthodontists and laypersons and the esthetic perception in the symmetric and asymmetric changes in gingival zeniths. Methods: Posed photographs of five patients were taken and digitally manipulated in Keynote software, in the gingival zenith region, in increments of 0.5 to 1mm in maxillary central and lateral incisors, symmetrically and asymmetrically, in nine different ways for each patient. The photos were then uploaded to a website, where evaluators (general dentists, orthodontists and laypersons) could observe and vote according to their esthetic perception, scoring from 1 to 10, 1 being the least attractive and 10 the more attractive. Kruskal-Wallis and Mann-Whitney tests were used for comparison. Results: Asymmetric gingival zeniths were less attractive than symmetrical gingival zeniths; gingival zenith differences greater than 1mm were perceptible in the smile attractiveness, both by laypersons, general dentists and orthodontists. When comparing maxillary central incisors with maxillary lateral incisors, the aesthetic change performed in the central incisors are more perceptible than those performed in lateral incisors, both symmetrical and asymmetrical. In a general way, orthodontists and general dentists are more critical in the evaluation and perception of gingival zenith changes, with the laypersons perceiving this change only from 1mm of maxillary right central incisor asymmetrical change. Conclusions: Asymmetric gingival zeniths are less attractive than symmetrical ones. Gingival zenith differences greater than 1mm are perceptible in the smile attractiveness. Orthodontists and general dentists are more critical in evaluating smile esthetics.


Class III camouflage treatment with the Biofunctional technique




Comparison of changes in incisors position in cases treated with damon self-ligating and conventional fixed appliances
Adriana Candida Albuquerque Nogueira, Karina Maria Salvatore Freitas, Darwin Vaz de Lima, Fabrício Pinelli Valarelli, and Rodrigo Hermont Cançado
Bentham Science Publishers Ltd.
Objective:This study aimed to compare the changes in maxillary and mandibular incisors position in cases treated with Damon self-ligating and conventional fixed appliances.Methods:The sample comprised 51 patients with Class I malocclusion, mild to moderate crowding, treated without extractions, divided into 2 groups: Group 1 consisted of 20 patients treated with Damon self-ligating appliance, with a mean initial age of 15.00 years, treated for a mean period of 2.01 years; and Group 2 comprised 31 patients treated with conventional fixed appliances, with a mean initial age of 14.98 years, treated for a mean period of 1.81 years. The initial and final cephalograms of each patient were measured. The intergroup comparisons were performed with independent t or Mann-Whitney tests.Results:Both groups showed a mild protrusion and a buccal inclination of the maxillary and mandibular incisors, with no statistically significant difference between them.Conclusion:The changes in maxillary and mandibular incisors position were similar between the groups treated with Damon self-ligating and conventional fixed appliances.


Influence of fixed appliances on two-phase orthopedic-orthodontic treatment
Leniana Santos Neves, Luiz Filiphe Gonçalves Canuto, Rodrigo Hermont Cançado, Guilherme Janson, Alexandre Fortes Drummond, and José Fernando Castanha Henriques
Universidade Estadual de Campinas
Aim: The purpose of this retrospective study was to investigate the effects of phase 2 with fixed appliances, after phase 1 Bionator treatment of Class II division 1 malocclusion, as compared to a matching control group. Methods: The experimental group consisted of 20 patients who were evaluated after orthodontic treatment with fixed appliances subsequently to functional therapy with the Bionator in phase 1.  A control group consisting of 20 Class II, division 1 individuals. Results: During phase 1 there was significant forward growth restriction in the maxillary complex, improvement of the maxillomandibular relationship and decrease in facial convexity.  There was also significant reduction of the maxillary incisor proclination and protrusion, protrusion of the mandibular incisors, and vertical development of the mandibular molars.  The overjet was significantly reduced and the molar relationship was significantly improved.  Treatment during phase 2, with fixed appliances, resulted in significant maxillary forward growth restriction and facial convexity reduction. Conclusion:  Major Class II skeletal and dentoalveolar anteroposterior correction was obtained during phase 1, with the Bionator.  Phase 2, with fixed appliances only produced a significant maxillary forward growth restriction and facial convexity reduction, without any significant dentoalveolar change.


Comparison of changes in dental arch dimensions in cases treated with conventional appliances and self-ligating damon system
Naiara Carolina Jacob Lima, Izabel Cristina de Mendonça Campos Freitas Falcão, Karina Maria Salvatore de Freitas, Darwin Vaz de Lima, Fabrício Pinelli Valarelli, Rodrigo Hermont Cançado, Renata Cristina Gobbi de Oliveira, and Ricardo Cesar Gobbi de Oliveira
Bentham Science Publishers Ltd.
Proposition: The objective of this study was to compare changes in maxillary and mandibular dental arch dimensions in cases treated nonextraction with conventional appliances and self-ligating Damon System. Materials and Methods: initial (T1) and final (T2) dental casts of 45 patients with Class I malocclusion treated nonextraction, with slight to moderate crowding, divided into two groups. Group 1: 21 patients treated with self-ligating Damon appliances, at a mean initial age of 18.37 years and mean treatment time of 2.11 years. Group 2: 24 patients treated with conventional appliances, at a mean initial age of 19.50 years and mean treatment time of 1.99 years. The model analysis was performed; Little irregularity index was used to evaluate crowding and arch form was evaluated by measurements in maxillary and mandibular arches including intercanine, interpremolar (first and second premolars) and intermolar distances and arch length. The intragroup comparison was performed with dependent t or Wilcoxon tests and intergroup comparison, with independent t or Mann Whitney tests. Results: In intergroup comparison of treatment changes (T2-T1) the Damon group presented an increase in maxillary transversal dimensions significantly greater than the conventional group. The change in maxillary arch length did not show difference between the groups. Regarding the mandibular arch, the Damon group presented a significantly greater increase in intercanine and inter first premolars than the conventional group. In The mandibular arch length, the greater and significant increase was observed in the groups of patients treated with conventional appliances. Conclusions: The treatment with the Damon appliances resulted in a significantly greater increase of maxillary arch dimensions when compared to conventional appliances. Mandibular intercanine and interpremolar distances also presented greater increase in Damon than conventional appliances. The increase in mandibular arch length was greater in conventional than in Damon group.


Factors associated to apical root resorption after orthodontic treatment
João Dalto Viganó Pastro, Adriana Cândida Albuquerque Nogueira, Karina Maria Salvatore de Freitas, Fabricio Pinelli Valarelli, Rodrigo Hermont Cançado, Renata Cristina Gobbi de Oliveira, and Ricardo Cesar Gobbi de Oliveira
Bentham Science Publishers Ltd.
Objective: The aim of this study was to assess the possible factors associated to root resorption, common to daily clinical orthodontics, especially parafunctional habits. Methods: A retrospective study of 600 patients (308 females and 292 males) previously treated orthodontically was conducted. The sample was divided into two groups related to the degree of root resorption at the ending of treatment according to Malmgren. Group 1 comprised 507 patients with a mean initial age of 14.21 years and who had absent or mild final external root resorption, characterized by grades 0, 1 and 2 of root resorption; Group 2 comprised 93 patients with initial mean age of 14.57 years and who had moderate or severe root resorption, characterized by grade 3 and 4. The groups were then compared in terms of age at the beginning and ending of the treatment, treatment time, gender, type of treatment (with and without extractions), parafunctional habits (bruxism, onychophagia, the habit of biting objects, tongue thrusting habit and thumb sucking habit), allergies and pretreatment root resorption. Results: The results show that the initial age, gender, type of malocclusion, parafunctional habits and allergies do not represent a statistically significant risk of root resorption. Conclusion: Treatment time and type (with and without extractions) and the presence of external root resorption at the beginning of the treatment showed significant differences.


Treatment of a Class II malocclusion with deep overbite in an adult patient using intermaxillary elastics and spee curve controlling with reverse and accentuated archwires
PaulaPatrícia Cotrin-Silva, FabrícioPinelli Valarelli, Ronaldo Carniel, MayaraPaim Patel, RodrigoHermont Cançado, KarinaMaria Salvatore Freitas, and MarcosRoberto de Freitas
Medknow
This paper aimed to describe the orthodontic treatment of an adult patient with the following characteristics: asymmetric Class II malocclusion, left subdivision, mandibular midline shifted to the left, mild mandibular anterior crowding, excessive overbite, 4-mm overjet, and a brachycephalic facial pattern. A 31-year-old male patient, treated with fixed preadjusted appliance with Roth prescription, with leveling and alignment NiTi archwire sequence. To correct the asymmetric Class II malocclusion, midline shift as well the overjet and overbite, intermaxillary elastics and accentuated and reversed stainless steel archwires were used, respectively. The posttreatment results showed a Class I molar relationship, as well the overjet and overbite correction. These results could be achieved due to a correct treatment plan and so to the patient cooperation.


Lower-Molar Distalization with Mini-Implant Anchorage in Asymmetrical Class II Cases




Anterior open-bite treatment with bonded vs conventional lingual spurs: A comparative study
Luiz Filiphe Gonçalves Canuto, Guilherme Janson, Niedje Siqueira de Lima, Renato Rodrigues de Almeida, and Rodrigo Hermont Cançado
Elsevier BV
INTRODUCTION The purpose of this study was to compare the isolated effects of bonded and conventional spurs on the craniofacial and dentoalveolar complexes of patients in the mixed dentition with anterior open bite. METHODS The sample included 68 subjects with anterior open bite and Class I malocclusion. Group 1 comprised 20 patients treated with bonded lingual spurs with a mean initial age of 9.31 years (SD, 1.17). Group 2 consisted of 21 patients treated with conventional lingual spurs with a mean initial age of 9.22 years (SD, 1.62). The control group (group 3) consisted of 27 untreated subjects. One-way analysis of variance tests followed by Tukey tests were used for intergroup cephalometric comparisons. After 1 month of treatment, patient acceptance of the spurs was evaluated with a questionnaire. RESULTS There were significantly greater overbite increases in the experimental groups than in the control group. The group with bonded lingual spurs showed significantly better acceptance than did the group with conventional lingual spurs during chewing and eating. CONCLUSIONS The 2 appliances resulted in similar overbite increases during early open-bite treatment. After a week or less of treatment, 92.5% of the children had adjusted to the spurs.

RECENT SCHOLAR PUBLICATIONS

Influence of distal-end heat treatment in the properties of heat-activated NiTi archwires
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JOURNAL OF OROFACIAL ORTHOPEDICS-FORTSCHRITTE DER KIEFERORTHOPADIE 2024



COMPARISON OF LIGHT-CURING TIME WITH THE USE OF DIFFERENT LED INTENSITIES IN THE BONDING OF ORTHODONTIC BRACKETS
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Qual a minha sequncia preferida de fios ortodnticos durante o tratamento uma escolha baseada em critrios
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COMPARISON OF CLASS III MALOCCLUSION TREATMENT CHANGES WITH TWO PRESCRIPTIONS OF PREADJUSTED BRACKETS
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Abordagem ortodntica de m ocluso originada de uma autointerveno relato de caso
LS Neves, PML Crepalde, RH Canado, KMS Freitas, BS Vieira
Ortho Sci., Orthod. sci. pract, 108-115 2023



Comparao da expresso de torque entre fios de nquel titnio convencionais e estticos
LS Neves, IO Silvares, RH Canado, VTL Buono, EC Frana
Ortho Sci., Orthod. sci. pract, 97-105 2023



Profile changes after class II treatment with twin force appliance in patients with different facial patterns
LS Pedro, KMS Freitas, AG Bandeca, RC Oliveira, RG Oliveira, ...
Clinical and Investigative Orthodontics 81 (4), 195-201 2022



Research Article Efficacy of Low-Level Laser Therapy in Reducing Pain in the Initial Stages of Orthodontic Treatment
MH Brito, CQ Nogueira, P Cotrin, T Fialho, RC Oliveira, RG Oliveira, ...
2022



Avaliao do conhecimento dos ortodontistas sobre movimentao ortodntica em dentes traumatizados
LS Neves, LT Vieira, EC Frana, MA Lombardi, RH Canado, JV Bastos, ...
Ortho Sci., Orthod. sci. pract, 80-87 2022



Avaliao da resistncia deformao plstica dos fios redondos de nquel-titnio
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Ortho Sci., Orthod. sci. pract, 102-109 2022



Avaliao da resistncia toro de mini-implantes aps uso clnico e processo de reciclagem
RL Dezordi, BS Vieira, SHB Santos, RH Canado, FP Valarelli, ...
Ortho Sci., Orthod. sci. pract, 68-72 2022



Efficacy of Low‐Level Laser Therapy in Reducing Pain in the Initial Stages of Orthodontic Treatment
MH Brito, CQ Nogueira, P Cotrin, T Fialho, RC Oliveira, RG Oliveira, ...
International Journal of Dentistry 2022 (1), 3934900 2022



Attractiveness of the facial profile: comparison of Class II patients treated with Twin Force or intermaxillary elastics
OA Pozza, RH Canado, FP Valarelli, KMS Freitas, RC Oliveira, ...
Dental Press Journal of Orthodontics 26, e212014 2021



Atratividade do perfil facial: comparao de pacientes de Classe II tratados com Twin Force e elsticos intermaxilares.
O Augusto POZZA, R Hermont CANADO, F Pinelli VALARELLI, ...
Dental Press Journal of Orthodontics 26 (5) 2021



nderungen im Weichgewebeprofil bei Angle-Klasse-II-Patienten mit Twin Force und mit intermaxillren Elastics–ein Vergleich
ICMCF Falco, FP Valarelli, LFG Canuto, RC Oliveira, RCG de Oliveira, ...
Journal of Orofacial Orthopedics/Fortschritte der Kieferorthopdie 82, 71-81 2021



Soft tissue profile changes in Angle class II patients treated with Twin Force or intermaxillary elastics—a comparison.
ICMCF Falco, FP Valarelli, LFG Canuto, RC Oliveira, RCG de Oliveira, ...
Journal of Orofacial Orthopedics/Fortschritte der Kieferorthopadie 82 (2) 2021



Treatment effects of the Herbst appliance in class II malocclusion patients after the growth peak
RH Canado, G Janson, B Tompson, JC de Castro Alvares, FP Valarelli, ...
European Journal of Dentistry 15 (01), 039-046 2021



Comparison of botulinum toxin and orthognathic surgery for gummy smile correction
CR Dutra, PP Primo, DS de Freitas, RC Oliveira, RCG de Oliveira, ...
The Open Dentistry Journal 2020



Comparison of the population occlusal characteristics in 3 Brazilian regions
M da Costa Almeida, P Cotrin, FP Valarelli, RH Canado, ...
Research, Society and Development 2020



Tratamento da biprotruso dentria em paciente com agenesia de incisivo lateral superior e perdas dentrias.
FP VALARELLI, HA AGUIAR, MM PEDOTT, M FACCINI, RH CANADO, ...
Clinical Orthodontics 19 (4) 2020

MOST CITED SCHOLAR PUBLICATIONS

Stability of anterior open bite nonextraction treatment in the permanent dentition
G Janson, FP Valarelli, JFC Henriques, MR de Freitas, RH Canado
American journal of orthodontics and dentofacial orthopedics 124 (3), 265-276 2003
Citations: 195



Long-term stability of anterior open bite extraction treatment in the permanent dentition
MR de Freitas, RTS Beltro, G Janson, JFC Henriques, RH Canado
American journal of orthodontics and dentofacial orthopedics 125 (1), 78-87 2004
Citations: 156



Prospective study of dentoskeletal changes in Class II division malocclusion treatment with twin force bite corrector
CH Guimares Jr, JFC Henriques, G Janson, MR de Almeida, J Araki, ...
The Angle Orthodontist 83 (2), 319-326 2013
Citations: 75



Predisposing factors to severe external root resorption associated to orthodontic treatment
GV Picano, KMS Freitas, RH Canado, FP Valarelli, PRB Picano, ...
Dental press journal of orthodontics 18, 110-120 2013
Citations: 73



Anterior open-bite treatment with bonded vs conventional lingual spurs: A comparative study
LFG Canuto, G Janson, NS de Lima, RR de Almeida, RH Canado
American Journal of Orthodontics and Dentofacial Orthopedics 149 (6), 847-855 2016
Citations: 68



Cephalometric evaluation of symmetric and asymmetric extraction treatment for patients with Class II subdivision malocclusions
G Janson, PEG Carvalho, RH Canado, MR de Freitas, JFC Henriques
American Journal of Orthodontics and Dentofacial Orthopedics 132 (1), 28-35 2007
Citations: 60



Factors associated to apical root resorption after orthodontic treatment
JDV Pastro, ACA Nogueira, KMS de Freitas, FP Valarelli, RH Canado, ...
The open dentistry journal 12, 331 2018
Citations: 57



Evaluation of the attractiveness of different gingival zeniths in smile esthetics
S Nomura, KMS Freitas, PPC Silva, FP Valarelli, RH Canado, MR Freitas, ...
Dental press journal of orthodontics 23 (05), 47-57 2018
Citations: 54



Comparison of the changes of alveolar bone thickness in maxillary incisor area in extraction and non-extraction cases: computerized tomography evaluation
PRB Picano, FP Valarelli, RH Canado, KMS Freitas, GV Picano
Dental press journal of orthodontics 18, 91-98 2013
Citations: 51



Dentoskeletal effects of Class II malocclusion treatment with the Twin Block appliance in a Brazilian sample: a prospective study
LZ Saikoski, RH Canado, FP Valarelli, KMS Freitas
Dental press journal of orthodontics 19, 36-45 2014
Citations: 50



Dentoskeletal changes induced by the Jasper jumper and the activator-headgear combination appliances followed by fixed orthodontic treatment
KJRS de Lima, JFC Henriques, G Janson, SC da Costa Pereira, ...
American Journal of Orthodontics and Dentofacial Orthopedics 143 (5), 684-694 2013
Citations: 50



Association between Bolton discrepancy and Angle malocclusions
RH Cancado, W GONALVES, FP Valarelli, KMS FREITAS, JAL Crspo
Brazilian oral research 29 (1), 1-6 2015
Citations: 45



Transition temperature range of thermally activated nickel-titanium archwires
TS Spini, FP Valarelli, RH Cancado, KMS FREITAS, DJ Villarinho
Journal of Applied Oral Science 22, 109-117 2014
Citations: 44



Relationship between malocclusion severity and treatment success rate in Class II nonextraction therapy
G Janson, FP Valarelli, RH Cancado, MR de Freitas, A Pinzan
American Journal of Orthodontics and Dentofacial Orthopedics 135 (3), 274 2009
Citations: 44



Occlusal outcomes and efficiency of 1-and 2-phase protocols in the treatment of Class II Division 1 malocclusion
RH Canado, A Pinzan, G Janson, JFC Henriques, LS Neves, CE Canuto
American journal of orthodontics and dentofacial orthopedics 133 (2), 245-253 2008
Citations: 43



A utilizao do laser em Ortodontia
LS Neves, CMS Silva, JFC Henriques, RH Canado, RP Henriques, ...
Revista Dental Press de Ortodontia e Ortopedia Facial 10, 149-156 2005
Citations: 41



Comparative study of torque expression among active and passive self-ligating and conventional brackets
MF Franco, FP Valarelli, JB Fernandes, RH Canado, KMS Freitas
Dental Press journal of orthodontics 20 (6), 68-74 2015
Citations: 37



Comparative study of the maturation of permanent teeth in subjects with vertical and horizontal growth patterns
LS Neves, A Pinzan, G Janson, CE Canuto, MR de Freitas, RH Canado
American Journal of Orthodontics and Dentofacial Orthopedics 128 (5), 619-623 2005
Citations: 37



Posttreatment and physiologic occlusal changes comparison
KMS Freitas, G Janson, B Tompson, MR de Freitas, TM Simo, ...
The Angle Orthodontist 83 (2), 239-245 2013
Citations: 35



Treatment effects of the Jasper Jumper and the Bionator associated with fixed appliances
LS Neves, G Janson, RH Canado, KJRS de Lima, TMF Fernandes, ...
Progress in orthodontics 15, 1-9 2014
Citations: 34