Cláudia Barbosa
@cbarbosa@ufp.edu.pt
Universidade Fernando Pessoa
RESEARCH, TEACHING, or OTHER INTERESTS
Dentistry, Public Health, Environmental and Occupational Health, Rehabilitation
Scopus Publications
Scopus Publications
Tiago Reis, Cláudia Barbosa, Margarida Franco, Catarina Batista, Nuno Alves, Pablo Castelo-Baz, José Martin-Cruces, and Benjamín Martin-Biedma
MDPI AG
This study aimed to evaluate by microCT the preparation of the artificial teeth (ATs), TrueTooth®, versus natural teeth (NTs): (1) the time and number of pecking movements needed for preparation; (2) the root canal volume increase; (3) if the pulp-colored medium has any effect on the 3D analysis. Material and Methods: Artificial and natural maxillary molars were used. Fourteen AT distobuccal canals and fourteen NT buccal canals were used for the first and second aim and fourteen AT mesiobuccal canals for the third aim. Results: No statistically significant differences were observed regarding the time and number of pecking movements (p > 0.05); for the root canal volume increase, a statistically significant difference was observed (p < 0.05) with a higher mean value for NTs; however, in the group of ATs, there was a volume decrease in three cases. The AT mesiobuccal root canal mean volume increase was also negative. Conclusions: There are no differences between the time and number of pecking movements between NTs and ATs, so TrueTooth® can potentially be used in endodontic training. The volume increase between ATs and NTs was higher in NTs. However, some samples showed negative values, also seen in the AT mesiobuccal canal, confirming that the pulp-colored medium has an effect on the 3D analysis.
Tânia Soares, Marco Marques, Cláudia Barbosa, Mário Vaz, and Maria Helena Figueiral
Maad Rayan Publishing Company
Background. Occlusal splints with sensors help in the bruxism diagnosis and monitoring, by recording the patient’s bite force. The aim of this study was to evaluate the accuracy of a pressure sensor when it is covered with different thicknesses of a 3D printing resin (Anycubic 405nm Translucent Green UV Resin, Anycubic, UK). Methods. In this preliminary study, the evaluated sensor (FlexiForce A201 Sensor, Tekscan) was firstly calibrated without any type of cover material, and later tested with 3D printing resin with different thicknesses (1 mm, 1.15 mm, 1.4 mm and 1.6 mm). The load tests were performed by a force tester (MultiTest 2.5 dV, Mecmesin). Results. When the pressure sensor was covered with resin of 1mm and 1.6 mm thick specimens, a higher difference was found between the applied load and the corresponding sensor reading. Conclusion. It was concluded that it is possible to use this type of pressure sensor and that it showed better accuracy with the 1.15 mm and 1.4 mm 3D printing resin covering.
Tiago Reis, Cláudia Barbosa, Margarida Franco, Catarina Baptista, Nuno Alves, Pablo Castelo-Baz, José Martin-Cruces, and Benjamín Martin-Biedma
MDPI AG
Three-dimensional printing offers possibilities for the development of new models in endodontics. Numerous studies have used 3D-printed teeth; however, protocols for the standardization of studies still need to be developed. Another problem with 3D-printed teeth is the different areas of literature requested to understand the processes. This review aims to gather evidence about 3D-printed teeth on the following aspects: (1) why they are advantageous; (2) how they are manufactured; (3) problems they present; and (4) future research topics. Natural teeth are still the standard practice in ex vivo studies and pre-clinical courses, but they have several drawbacks. Printed teeth may overcome all limitations of natural teeth. Printing technology relies on 3D data and post-processing tools to form a 3D model, ultimately generating a prototype using 3D printers. The major concerns with 3D-printed teeth are the resin hardness and printing accuracy of the canal anatomy. Guidance is presented for future studies to solve the problems of 3D-printed teeth and develop well-established protocols, for the standardization of methods to be achieved. In the future, 3D-printed teeth have the possibility to become the gold standard in ex vivo studies and endodontic training.
Cláudia Barbosa, Maria Conceição Manso, Tiago Reis, Tânia Soares, Sandra Gavinha, and Richard Ohrbach
Wiley
Cláudia Barbosa, Maria Conceição Manso, Tiago Reis, Tânia Soares, Sandra Gavinha, and Richard Ohrbach
Wiley
SummaryBackgroundOral behaviors (OBs) must be assessed as part of a biobehavioural evaluation for patients with temporomandibular disorders (TMD).ObjectivesThe aims of this study were: to translate and culturally adapt the Oral Behaviors Checklist (OBC) into Portuguese; to evaluate its basic psychometric properties; and to assess the utility of the Portuguese OBC.MethodsThe Portuguese translation, cross‐cultural equivalence, and two studies (Pre‐field test, N = 8, and field test, N = 45) of the OBC adhered to official guidelines of the International RDC/TMD Research Consortium (now, INfORM). In the formal test (N = 120) the Portuguese RDC/TMD was used for TMD diagnosis.ResultsTranslation and cultural equivalence of the OBC into Portuguese was reviewed and approved by an expert panel. In the field test, item agreement between English and Portuguese OBC versions was very good (weighted Kappa ≥ 0.934). Test‐retest reliability of the OBCSumScore was excellent intra‐class correlation coefficient ((ICC) = 0.998, P < 0.001). As an initial probe into validity using parallel forms, comparison of the sleep bruxism and awake clenching questions included in the RDC/TMD with the corresponding OBC questions yielded excellent (Kappa = 0.932) and very good (k = 0.850), respectively, convergent validity as well as excellent (that is, poor agreement, kappa = 0.013) discriminant validity for these specific OBs. The mean OBCSumScore was significantly lower for the healthy group, compared to the painful TMD group (ANOVA, P = 0.037).ConclusionsThe Portuguese translation of the OBC exhibits cross‐cultural equivalence for use in Portugal, and the instrument performs with acceptable psychometric properties. The validity of the parafunction construct requires additional research in both Portuguese and other languages.
Cláudia Barbosa, Sandra Gavinha, Tânia Soares, and Maria Manso
MRE Press
AIMS
To determine whether there is an association between temporomandibular disorders (TMD) and a history of facial/jaw injury (FJI), orthodontic treatment (OT), or third molar removal (TMR) in university students, and to evaluate the students' awareness of a possible relationship between jaw pain or other TMD symptoms, FJI, OT, and TMR, and the presence of TMD.
METHODS
This cross-sectional study involved 1,381 Oporto District university students. The Portuguese version of the Research Diagnostic Criteria for TMD was used for TMD diagnosis. FJI, OT, and TMR histories were evaluated by questionnaire. Univariate associations between categorical variables were tested by using chi-square tests. Multivariate logistic regression was applied to predict independent factors associated with TMD.
RESULTS
Of the 1,381 students (mean age ± standard deviation [SD]: 21.7 ± 3.9 years), 39.3% had TMD, 23.2% had a history of FJI, 44.5% had undergone OT, and 26.2% had undergone TMR. Univariate analyses showed significant associations between OT and TMD (P = .044) and between TMR and TMD (P = .003). Multivariate regression analyses using FJI, OT, TMR, OT × TMR interaction, sex, and age in the first step showed TMR (Odds Ratio [OR] = 1.30; P = .041), sex (OR = 1.59; P = .001), and age (OR = 1.04; P = .013) as significant. A positive correlation between TMD and awareness of the relationship between jaw pain or TMD symptoms and a history of FJI or OT (P < .001 and P = .002, respectively) was documented.
CONCLUSION
TMR, female sex, and older age were risk factors independently associated with TMD. The results also suggest that patients' awareness of potential risk factors for TMD should be taken into account on an individual basis.
Filipa Lacerda, Cláudia Barbosa, Sérgio Pereira, and Maria Conceição Manso
Sociedade Portuguesa de Estomatologia e Medicina Dentaria (SPEMD)
J. A. Cardoso, C. Barbosa, S. Fernandes, C. L. Silva, and A. Pinho
Wiley
Abstract The evaluation of pre‐clinical technical achievement in fixed prosthodontics cannot be objective when using visual examination of dental preparations. This is, however, still the main method used in dental schools. The present study introduces a new method, based on a mathematical formula, to reduce the problem. The idea emerged when using the Kavo PrepAssistant® system (software version 1.05). This system is a 3D‐scanner with software that can quantify geometrical differences between an instructor and student dental preparation in model teeth. Therefore, a mathematical formula was created, integrating selected clinically relevant geometric characteristics of dental preparations measured by the system. In this new formula, 70% of the evaluation parameters were computer analysed, whilst 30% were visually evaluated. This new method was compared with the traditional visual evaluation system during a pre‐clinical practical examination, with the participation of 25 students. Using both methods to evaluate the 25 preparations, results showed similar grading for both methods (K–S test = 0.16; P < 0.05). Although this method does not provide overall clinical evaluation of student performance these results suggest that it can be helpful accessing technical achievement. In this method, the student has the guarantee that 70% of his/her grade results from an objective computer evaluation, with the possibility to visualise the mistakes with the software. It also reduces problems related to the calibration between different examiners. The Kavo PrepAssistant® is a powerful tool in pre‐clinical teaching, but has some drawbacks. It has to be developed towards the actual needs of pre‐clinical departments, in order to achieve its full potential, as described in this study.