Luis Ernesto Arriola-Guillén

@cientifica.edu.pe

Associated Professor
Universidad Científica del Sur

RESEARCH INTERESTS

Orthodontics
Craniofacial growth
Open Bite
Maxillary impacted Canines

100

Scopus Publications

Scopus Publications

  • Oral health-related quality of life, adaptation/discomfort during open bite treatment with spurs: complementary analysis from a randomized clinical trial
    Aron Aliaga-Del Castillo, Guido Artemio Marañón-Vásquez, Guilherme Janson, Lorena Vilanova, Felicia Miranda, Camila Massaro, Silvio Augusto Bellini-Pereira, Luis Ernesto Arriola-Guillén, Marilia Yatabe, Antonio Carlos Ruellas,et al.

    Springer Science and Business Media LLC
    AbstractThis single-center trial aimed to longitudinally compare the oral health-related quality of life (OHRQOL), adaptation and discomfort during anterior open bite (AOB) treatment with lingual spurs and build-ups (SBU) versus spurs only (S) approaches. Children (7–11 years) with AOB were randomly allocated into two treatment groups (SBU or S). The Child Perception Questionnaire (CPQ8–10) was applied 1 and 12 months after installation of the appliances. Questionnaires evaluating functional adaptation and discomfort during the first month of treatment were also applied. A visual analog scale (VAS) was used in these questionnaires. Generalized mixed models were used for analyzing OHRQOL and discomfort data. Generalized linear models were used to assess adaptation outcomes (α = 0.05). The SBU group included 24 patients (7 males and 17 females; mean age 8.2 years) and the S group included 25 patients (11 males and 14 females; mean age 8.3 years). Regardless of the treatment type, overall OHRQOL scores at 12 months were 0.69 times those recorded at 1 month after the appliances installation (i.e., ~ 31% reduction; exp (β) = 0.69; 95% CI: 0.55, 0.88). A significant interaction between treatment and time was detected for the ‘functional limitations’ domain. For this domain, a significant improvement from the first to the twelfth month was observed in the S group (P < 0.001). Patients in both treatment groups showed similar and easy adaptation to the appliances. Independent of the type of treatment, tongue-related discomfort decreased over time. One week and one month after the appliance’s delivery, the discomfort scores were 0.19 (i.e., ~ 81% reduction; exp (β) = 0.19; 95% CI: 0.13, 0.28; P < 0.001) and 0.02 (i.e., ~ 98% reduction; exp (β) = 0.02; 95% CI: 0.01, 0.07; P < 0.001) times, respectively, those issued immediately after the installation of the appliances. Regardless of treatment type; overall OHRQOL improved from the first to the twelfth month of AOB treatment. The functional limitations score decreased in the S group. Children showed easy adaptation, and their discomfort decreased 1 week after the installation of the appliances.Trial registration: Clinicaltrials.gov; NCT03702881, date of registration: October 11, 2018.

  • Association of mandibular canine impaction and anatomical factors: A multicentre retrospective panoramic study in Latin America
    Roger Homero Cornejo-Paz, Yalil Augusto Rodríguez-Cárdenas, Gustavo Armando Ruíz-Mora, Aron Aliaga-Del Castillo, and Luis Ernesto Arriola-Guillén

    Elsevier BV

  • Alveolar morphometry in young adults with and without agenesis of the upper lateral incisor: A retrospective study
    Jesús Manuel Sánchez-Beltran, Yalil Augusto Rodríguez-Cárdenas, Gustavo Armando Ruíz-Mora, Aron Aliaga-Del Castillo, and Luis Ernesto Arriola-Guillén

    Elsevier BV

  • Comparison of mesiodistal angulations of premolars and molars in anterior open bite subjects with different sagittal malocclusions: A retrospective study
    Victor Reyes-Mantilla, Heraldo Luis Dias-Da Silveira, Vinicius Dutra, and Luis Ernesto Arriola-Guillén

    Elsevier BV

  • The interference of digital radiographic image acquisition and processing protocols in the diagnosis of incipient enamel carious lesions
    P. Ribeiro, L. Hashizume, L. Arriola-Guillén, K. Madeira, M. Vizzotto, and H. da Silveira

    Medicina Oral, S.L.

  • Florid Bone Dysplasia: Imaging Signs reported in dental articles published between 2012 and 2021


  • Three-dimensional decision support system for treatment of canine impaction
    Dylan J. Keener, Antonio Carlos de Oliveira Ruellas, Aron Aliaga-Del Castillo, Luis Ernesto Arriola-Guillén, Jonas Bianchi, Heesoo Oh, Marcela Lima Gurgel, Erika Benavides, Fabiana Soki, Yalil Augusto Rodríguez-Cárdenas,et al.

    Elsevier BV


  • Evaluation of the follicular space volume of lower third molars with different impaction positions and angulations: A cone-beam computed tomography and histopathological study
    Marlene Barroso, Luis E. Arriola-Guillén, Vinicius Dutra, Julio Escoto Rodríguez, and Gerardo Ruales Suárez

    Elsevier BV

  • Sagittal Position of the Upper Incisor in Relation to the Forehead in Peruvian Individuals with Different Skeletal Relationships
    José Renatto Bazán-Mendoza, Paula Betzabe Arias-Modesto, Gustavo Armando Ruíz-Mora, Yalil Augusto Rodríguez-Cárdenas, Aron Aliaga-Del Castillo, Vinicius Dutra, and Luis Ernesto Arriola-Guillén

    Jaypee Brothers Medical Publishing
    AIM The aim of this study was to determine the sagittal position of the upper incisor considering Andrews' analysis based on the position of the forehead in Peruvian individuals with different skeletal relationships. MATERIALS AND METHODS This retrospective, cross-sectional study included 212 lateral head radiographs of Peruvian individuals (males: 85, mean age 21.38 ± 6.88, and females: 127, mean age 21.18 ± 6.95), with different skeletal relationships (Class I group = 96, Class II group = 57, Class III group = 59). The values of the ANB, SNA, SNB angles as well as the forehead anterior limit line (FALL) and goal anterior limit line (GALL) points were identified in the radiographs, and then a vertical line was drawn in each point to determine if the upper incisor was positioned forward (protruded), backward (retruded) or within (adequate) these lines. Two trained and calibrated investigators performed all the measurements. The Chi-square test was used to evaluate associations. A p-value < 0.05 was considered statistically significant. RESULTS Overall, the sagittal position of the upper incisor showed a significant association with the sagittal skeletal relationship (p = 0.001). The upper incisors showed an adequate position (41.7%), protruded position (56.10%), and retruded position (42.40%), for Class I, II, and III skeletal relationships, respectively, as highest percentages in each Class. Statistical significance was found for females only (p = 0.005). CONCLUSION Skeletal Class I mainly showed an adequate position of the upper central incisor, whereas for Class II a protruded position was most frequently found, and Class III presented a retruded position. CLINICAL SIGNIFICANCE Andrews' analysis based on the position of the forehead in Peruvian individuals is a valuable tool for orthodontic diagnosis. How to cite this article: Bazán-Mendoza JR, Arias-Modesto PB, Ruíz-Mora GA, et al. Sagittal Position of the Upper Incisor in Relation to the Forehead in Peruvian Individuals with Different Skeletal Relationships. J Contemp Dent Pract 2023;24(11):821-825.

  • Conservative Treatment of Bilateral Impacted Mandibular Canines Traction
    Gustavo Armando Ruíz-Mora, Luis Ernesto Arriola-Guillén, Aron Aliaga-Del Castillo, Yalil Augusto Rodríguez-Cárdenas, Vinicius Dutra, and Mabel Mejía-Milian

    Hindawi Limited
    The objectives of the treatment of impacted canines differ according to the characteristics of dental malocclusion. Traction of the tooth is a conservative and viable alternative, which allows for maintaining stability and occlusal function. The following case report describes the treatment of an 11.6-year-old female patient, who presented bilateral impaction of mandibular canines in contact with the midline, mixed dentition in the inter-transitional period, class I angle malocclusion, with light crowding teeth. The treatment comprised three phases. The first phase, verticalization of the mandibular canines in mixed dentition, was performed to pull the impacted bilateral mandibular canines towards the dental arch to achieve their verticalization, maintaining the molar relationship, and the position of the upper and lower incisors. In the second phase, osteogenic rest was planned to relieve post-traction stress while awaiting the replacement of the mixed dentition. Finally, the third phase in permanent dentition was to align and level canines within the arch after extraction of the deciduous canines. For the viability of the permanent mandibular canines in the dental arch, orthosurgical traction was implemented, with a traction system with closed nickel–titanium coil springs with a transitory rigid dental-mucous-supported anchorage device, which allowed control and protection of the adjacent teeth and movements with helical forces of a controlled three-dimensional range. The results of the treatment were adequate, achieving consolidated molar and canine relationships, overjet, overbite, and optimal facial balance.

  • Concordance of the facial biotype between Bjork-Jarabak cephalometrics and photographic analysis of the facial opening angle
    A. Medina-Grandez, L. Llontop-Palma, G. Ruíz-Mora, Y. Rodríguez-Cárdenas, A. Aliaga-Del Castillo, V. Dutra, and L. Arriola-Guillén

    Medicina Oral, S.L.
    Background Analysis of the facial biotype can provide useful information for orthodontic diagnosis and can determine the type of growth of a patient to guide orthodontic treatment. The objective of this study was to determine the concordance of the facial biotype according to Bjork-Jarabak cephalometric analysis and photographic analysis of the angle of facial opening in Peruvian individuals. Material and Methods This retrospective study included 244 cephalometric radiographs and frontal photographs of the same patients obtained from a database. The facial biotype (mesofacial, brachyfacial, or dolichofacial) was determined with the Björk-Jarabak polygon (cephalometric) and the angle of facial opening (photographic). Two trained investigators performed all the measurements. The concordance of the facial diagnosis was determined using correlations of the interclass coefficient and the kappa test. p<0.05 Results In cases with a mesofacial biotype, both analyses coincided in 60 individuals (68.2%), while in those diagnosed with a dolichofacial biotype, the analyses only coincided in 17 individuals (10.4%). There was no concordance between the two methods regarding the brachyfacial biotype since according to the angle of facial opening none of the individuals presented a brachyfacial biotype (kappa weighted test= 0.020, p=0.586). Conclusions Cephalometric and photographic analyses should be complementary and one should not substitute the other. Attention should be focused on dolichofacial and brachyfacial biotypes, which showed less concordance between evaluations. So, more studies are needed to follow this line of research. Key words:Facial biotype, cephalometry, photography, facial type, radiography.

  • Association of breastfeeding duration with the development of non-nutritive habits, and transversal and vertical occlusal alterations in preschool children: A cross-sectional study
    Ingrid Góngora-León, Catherine Alarcón-Calle, Aron Aliaga-Del Castillo, Carlos Flores-Mir, and Luis Ernesto Arriola-Guillén

    Wroclaw Medical University
    BACKGROUND Breastfeeding has multiple nutritional, immunological and psychological benefits, as well as a positive influence on the development of the stomatognathic system. OBJECTIVES The present study attempted to determine the relationship between the duration of breastfeeding and the development of non-nutritive habits, and transversal and vertical occlusal alterations in preschool children. MATERIAL AND METHODS This cross-sectional study involved 155 preschoolers aged 2-5 years from 3 public schools in Lima, Peru. The sample was divided into 2 groups with regard to the duration of breastfeeding: group A (n = 50) included infants that had been breastfed for up to 6 months; and group B (n = 105) included infants that had been breastfed for 6-12 months. Two trained and calibrated dentists evaluated each group, and clinically determined the presence or absence of transversal or vertical occlusal alterations. Likewise, the children's parents or caregivers were consulted to determine the development of non-nutritive habits. RESULTS A significant association was found between breastfeeding duration and the development of the oral breathing habit; groups A and B showed a prevalence of 30.0% and 16.2%, respectively (p = 0.048). Likewise, breastfeeding duration affected the appearance of oral breathing (OR (odds ratio) = 0.84; 95% CI (confidence interval): 0.74-0.96; p = 0.011). Furthermore, the use of a bottle for more than 24 months significantly influenced the appearance of oral habits (OR = 3.55; 95% CI: 1.20-10.55; p = 0.022) and open bite (OR = 12.12; 95% CI: 1.16-126.31; p = 0.037). CONCLUSIONS Breastfeeding duration of 6-12 months was shown to be a protective factor in preventing the appearance of oral breathing. Posterior crossbite (PCB), open bite and deep bite seemed not to be influenced by breastfeeding duration. However, the use of a bottle for more than 24 months significantly influenced the appearance of anterior open bite.

  • Root morphology of lateral incisors adjacent to impacted maxillary canines: A cone-beam computed tomography retrospective cross-sectional study
    Miguel Edgardo Melchor-Soto, Luis Ernesto Arriola-Guillén, Aron Aliaga-Del Castillo, Gustavo Armando Ruíz-Mora, and Yalil Augusto Rodríguez-Cárdenas

    Elsevier BV

  • Three-dimensional dentoalveolar changes in open bite treatment in mixed dentition, spurs/posterior build-ups versus spurs alone: 1-year follow-up randomized clinical trial
    Aron Aliaga-Del Castillo, Guilherme Janson, Lorena Vilanova, Lucia Cevidanes, Marilia Yatabe, Daniela Garib, Luis Ernesto Arriola-Guillén, Felicia Miranda, Camila Massaro, Silvio Augusto Bellini-Pereira,et al.

    Springer Science and Business Media LLC
    AbstractThis randomized clinical trial aimed to compare the three-dimensional dentoalveolar maxillary changes after anterior open bite treatment with bonded spurs and build-ups versus bonded spurs alone. Patients from 7 to 11 years of age with anterior open bite were randomly allocated into two groups. Bonded spurs and posterior build-ups were used in the experimental group and only bonded spurs were used in the comparison group. The randomization sequence was generated at www.randomization.com. Opaque, sealed and sequentially numbered envelopes were part of the allocation concealment. Digital dental models were acquired before (T1) and after 12 months of treatment (T2) and de-identified for analysis purposes. Three-dimensional changes of maxillary permanent incisors and first molars were evaluated by means of T1 and T2 dental model superimposition. Landmark-based registration on the posterior teeth and registration on the palate using regions of interest were performed. T or Mann–Whitney U tests were used for intergroup comparisons (P &lt; 0.05). Mean difference (MD) and 95% confidence interval (CI) were calculated. Twenty-four children (17 girls and 7 boys) were included in the experimental group (mean age 8.22 ± 1.06 years) and 25 children (14 girls and 11 boys) were included in the comparison group (mean age 8.30 ± 0.99 years). After 12 months of treatment, inferior displacements of maxillary incisors were similar in the experimental (1.55–2.92 mm) and comparison (1.40–2.65 mm) groups. Inferior displacement of the maxillary molars was also similar in both groups (MD: − 0.13 mm; 95% CI − 0.38, 0.12). The experimental and comparison groups showed medial and lateral displacements of the permanent first molars, respectively (MD, − 0.31 mm; 95% CI − 0.51, − 0.11). Lingual inclination of the permanent first molars were observed in the experimental group and buccal inclination in the comparison group (MD, − 2.16°; 95% CI − 3.72, − 0.60). Similar three-dimensional displacements of maxillary central and lateral incisors, and inferior displacements of maxillary permanent first molars were observed in both groups. Bonded spurs associated with posterior build-ups demonstrated some medial displacement and lingual inclination of the maxillary permanent first molars while opposite changes were noticed in the comparison group.Trial registration: Clinicaltrials.gov; NCT03702881, date of registration: October 11, 2018.

  • Effect of pediatric mouthwashes on the color stability of dental restorations with composite resins. In vitro comparative study
    L. Martinez-Ccahuana, E. Álvarez-Vidigal, E. Arriola-Guillén, and D. Aguilar-Gálvez

    Medicina Oral, S.L.

  • Multiple eruptive delay as a variant of primary eruption failure. A preliminary case report
    Gustavo Armando Ruíz-Mora, Luis Ernesto Arriola-Guillén, Aron Aliaga-Del Castillo, Yalil Augusto Rodríguez-Cárdenas, and Rocío Esther Avalos-Hernández

    Elsevier BV

  • Influence of dentofacial characteristics on the appearance of self-reported bullying: A review
    Sisley Morales-Salazar, Judith Monteagudo-Sangama, and Luis Arriola-Guillén

    Wroclaw Medical University
    Bullying is a social problem that affects children and adolescents in particular. It deteriorates the selfesteem of its victims, decreases their quality of life and generates future psychological problems. The aim of this review was to determine the influence of dentofacial characteristics on the appearance of selfreported bullying through a literature review. A systematic search was carried out in the databases of international scientific literature on health sciences, including MEDLINE via PubMed, Scopus, LILACS, and SciELO. Up to October 10, 2020, a total of 348 articles were identified, but only 36 were ultimately selected for the review. Specific keywords in English were used in the search: "dentofacial features"; "soft tissue"; and "malocclusion". It was found that the appearance of bullying was associated with altered facial profiles, namely the presence of different classes of malocclusion, with class II or class III malocclusion being the most impactful. Altered dentofacial characteristics can make an individual the target of harassment, leading to low quality of life, emotional instability, low self-esteem, and the lack of confidence with regard to dentofacial appearance as well as poor long-term social and academic performance. There is a need to develop preventive measures that would be applied by both parents and authorities, with disseminating information on bullying in schools as well as on adequate oral hygiene and the importance of going to the dentist. Traditional and cybernetic bullying share similarities. While working out strategies against bullying, it is essential to raise awareness among victims and bullies, families, and society, and to determine how bullying is perceived by children and teenagers.

  • Three-dimensional evaluation of mandibular canine impaction characteristics and their relationship with lower incisor root morphometry
    M. Mejía-Milian, L. Arriola-Guillén, A. Aliaga-Del Castillo, Y. Rodríguez-Cárdenas, and G. Ruíz-Mora

    Medicina Oral, S.L.

  • Technical note: Validity of a non-destructive device for opening dental arches in rigor mortis cadavers
    María Eugenia Silva-Chacón, Ana María Carlos-Erazo, Luis Ernesto Arriola-Guillén, and Stefano De Luca

    Elsevier BV

  • Association Between Breastfeeding Type and Duration and the Molar and Facial Characteristics of Preschoolers Aged 2 To 6 Years: A Cross-Sectional Study
    Catherine Sharlot Alarcón-Calle, Ingrid Góngora-León, Aron Aliaga-Del Castillo, Carlos Flores-Mir, and Luis Ernesto Arriola-Guillén

    The Journal of clinical pediatric dentistry MRE Press
    Objective: To calculate the association between the type and duration of breastfeeding and the deciduous molar relationship and facial characteristics of preschoolers aged 2 to 6 years. Study design: This crosssectional study included 160 pre-schoolers aged 2 to 6 years old, enrolled in the 2019 academic year from 3 public schools in Data collection involved two phases. The first phase consisted in determining the facial type, anteroposterior and vertical profile, facial dimensions, and the molar relationship between primary second molars. The second phase included interviews with the parents or legal guardians. Children with exclusive breastfeeding and with mixed/artificial feeding (breastfeeding and bottle-feeding, or exclusive artificial bottle-feeding) were included. Chi-square test, t-test, multiple linear regression, and binary logistic regression tests were applied (p&amp;lt;0.05). Results: The facial length, width, and the lower third were greater in the exclusive breastfeeding group than in the mixed/artificial feeding group (3.74mm, p=0.002; 2.06mm, p=0.047; and 2.94mm, p=0.015; respectively). In addition, children with breastfeeding for more than six months showed greater facial length, facial width and lower third (3.20mm, p=0.038; 3.68mm, p=0.006; and 3.57mm, p=0.026; respectively). The duration of exclusive breastfeeding influenced facial width, noting an increase of 3.32mm (p=0.011) if a pre-schooler had exclusive breastfeeding for more than six months. Conclusion: There were no significant associations between type and duration of breastfeeding and the molar terminal plane, facial type, or profile. However, facial dimensions were greater in the exclusive breastfeeding group, and when breastfeeding was longer than six months.

  • Effect of the application of software on the volumetric and cross-sectional assessment of the oropharyngeal airway of patients with and without an open bite: A CBCT study
    Patricia Vidal-Manyari, Luis Arriola-Guillén, Ludy Jimenez-Valdivia, Heraldo Dias-Da Silveira, and Mariana Boessio-Vizzotto

    Wroclaw Medical University
    BACKGROUND Using different software to evaluate the airways, with different thresholds, but within the range for airway recognition, could yield different measurements in the same patient with or without craniofacial disharmony. OBJECTIVES The aim of the present study was to compare the volume and the most constricted area (MCA) of the oropharynx in individuals with or without an open bite by using 2 software programs meant for cone-beam computed tomography (CBCT). MATERIAL AND METHODS This comparative study included 60 cases selected from 137 CBCT scans obtained from individuals with the presence or absence of an open bite. Each group included adults of both genders - in total 30 women and 30 men - with a mean age of 27.57 ±11.85 years in the open bite group and 26.23 ±6.78 years in the control group. The oropharyngeal volume and MCA were measured with 2 three-dimensional (3D) software packages: Planmeca Romexis®; and Nemotec NemoStudio®. Two calibrated orthodontists trained in the use of the software made the measurements. Data was analyzed using Student's t tests for independent and paired samples (p < 0.05). RESULTS In general, the oropharynx volume measurements obtained with the NemoStudio software were significantly higher than those obtained with Romexis (19,007.17 ±8005.79 mm3 and 17,823.47 ±7148.62 mm3, respectively) (p = 0.020). However, when the groups were analyzed separately, the measurements of the group with an open bite did not differ according to the software used (p = 0.352). The measurements of the MCA of the oropharynx were significantly higher when obtained with the NemoStudio software (MD (mean difference) = 19.02 mm2) (p = 0.005). In contrast, no difference in the MCA results for the 2 software packages was found in the open bite group (p = 0.728). CONCLUSIONS The volumetric and cross-sectional measurements of the oropharyngeal airway, particularly in individuals without an open bite, were affected by the software used.

  • Primary failure of eruption: occlusal and dentoalveolar characteristics in mixed and permanent dentition. A study with cone beam computed tomography
    R. Avalos-Hernández, L. Arriola-Guillén, A. Aliaga-Del Castillo, Y. Rodríguez-Cárdenas, and G. Ruíz-Mora

    Medicina Oral, S.L.

  • Virtual learning object for developing knowledge about the diagnosis and management of molar incisor hypomineralization
    Denisse Aguilar Gálvez, Fernanda C. Noal, Luis Ernesto Arriola‐Guillén, Fernando Neves Hugo, Soraya Coelho Leal, and Fernando Borba de Araujo

    Wiley
    AIM To develop, apply and evaluate a virtual learning object (VLO) for teaching undergraduate dental students and pediatric dentists to diagnose and to manage molar incisor hypomineralization (MIH). METHODS This controlled educational intervention included 170 undergraduate dental students and 50 pediatric dentists. The student intervention group (VLOG) was trained by the VLO; the control group of students (CG); received a synchronous virtual class and the group of pediatric dentists (PDG) was trained with the VLO. Pre-test and post-test data were analyzed with a mixed one-way and Tukey post-hoc ANOVA test (α = 0.05). The answers to the questionnaire were analyzed with the one-way ANOVA test and Tukey's posthoc (α = 0.05). RESULTS The values obtained in the pre-test were significantly lower than those obtained in the post-test for all groups. The specialists showed a higher level of knowledge before and after the MIH training compared to the students (p<0.001). Similarly, statistical differences were found in the level of knowledge, which increased after MIH training (p <0.001). There were no differences between the CG and VLOG. CONCLUSIONS The level of knowledge increased in all groups after training regardless of the method used. VLOG works similar to traditional teaching approaches.

  • MANDIBULAR ANGLE MORPHOLOGY IN OPEN BITE SUBJECTS ACCORDING TO THE SKELETAL RELATIONSHIP: A CBCT SHORT REPORT.
    Gina Laquihuanaco, , Yalil Rodríguez-Cárdenas, Gustavo Ruíz-Mora, Abraham Meneses-López, Luis Arriola-Guillén, , , , ,et al.

    Facultad de Odontologia, Universidad de Concepcion
    Aim: The purpose of this research was to three-dimensionally evaluate the mandibular angle morphology in open bite subjects with different sagittal skeletal relationships. Material and Methods: Cone beam computed tomography (CBCT) images of 26 subjects (12 men and 14 women) with anterior open bite were evaluated. The sample included 3 groups categorized by their sagittal skeletal relationship (based on ANB angle and anteroposterior dysplasia indicator (APDI)): Class I (n=9), Class II (n=6) and Class III (n=11). The total gonial angle, upper gonial angle, lower gonial angle, intergonial width, interantegonial width and antegonial notch depth were measured. ANOVA and Tukey tests were used for intergroup comparison. The Kruskal Wallis test was also used when necessary. In addition, the Pearson correlation coefficient was calculated to evaluate significant correlations between overbite and antegonial notch depth with gonial angle, Frankfurt mandibular plane angle (FMA) and the palatal plane-mandibular plane (PP-MP). Results: A significant difference was only found on the upper gonial angle between Class II and Class III (p=0.047). The upper gonial angle showed greater values (48°±3°) with the mandibular branch toward backward in Class III subjects and lower values (42.42°±4.39°) with the mandibular ramus leaning forward in subjects with Class II skeletal relationship. Besides, only a statistically significant correlation was found between overbite and the lower gonial angle (r=-0.418, p=0.034). Conclusion: Mandibular angle morphology is similar in anterior open bite subjects with different sagittal skeletal relationships, except for the upper gonial angle which is increased in Class III and decreased in Class II subjects with open bite. Lower gonial angle is negatively correlated with overbite. This difference should be considered by orthodontists when planning their treatments.