title: Correlation between facial types and muscle TMD in women: an anthropometric approach.
abstract: Temporomandibular disorders (TMD) affecting the articular disc and/or the facial muscles are common among the population, recording a higher incidence in women age 20-40 years. The aim of this study was to investigate the correlation between facial types and muscle TMD in women. This study comprised 56 women age 18 to 49 years, seeking treatment for TMD at the School of Medicine, Federal University of São Paulo. All of the study individuals were diagnosed with muscle TMD, based on the Research Diagnostic Criteria (RDC). Facial type was determined using the Facial Brugsch Index and classified as euryprosopic (short and/or broad), mesoprosopic (average width) and leptoprosopic (long and/or narrow). The data were submitted to the Chi-square test and ANOVA-Tukey's test to conduct the statistical analysis. The faces of 27 individuals were classified as euryprosopic (48%), 18 as mesoprosopic (32%), and 11 as leptoprosopic (20%). A statistically significant difference (Chi-square, p = 0.032) was found among the facial types, in that leptoprosopic facial types showed the lowest values for muscle TMD. A greater number (p = 0.0007) of cases of muscle TMD were observed in the 20 to 39 year-old subjects than in the subjects of other age segments. In conclusion, women with euryprosopic facial types could be more susceptible to muscle TMD. Further studies are needed to investigate this hypothesis.
authors.affiliation: Department of Morphology, College of Medicine, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
authors.forename: Ronaldo Pacheco de
authors.initials: RP
authors.lastname: Araujo
authors.affiliation: Department of Physiological Sciences, Piracicaba Dentistry School, University of Campinas, Piracicaba, SP, Brazil.
authors.forename: Francisco Carlos
authors.initials: FC
authors.lastname: Groppo
authors.affiliation: Department of Physiological Sciences, Piracicaba Dentistry School, University of Campinas, Piracicaba, SP, Brazil.
authors.forename: Luiz Eduardo Nunes
authors.initials: LE
authors.lastname: Ferreira
authors.affiliation: Department of Morphology, College of Medicine, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
authors.forename: Antônio Sérgio
authors.initials: AS
authors.lastname: Guimarães
authors.affiliation: Department of Physiological Sciences, Piracicaba Dentistry School, University of Campinas, Piracicaba, SP, Brazil.
authors.forename: Sidney Raimundo
authors.initials: SR
authors.lastname: Figueroba
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000704:Analysis of Variance; D002508:Cephalometry / Q000379:methods*; D005145:Face / Q000473:pathology*; D005152:Facial Muscles / Q000473:pathology; D005260:Female; D006801:Humans; D008410:Masticatory Muscles / Q000473:pathology; D008875:Middle Aged; D018709:Statistics, Nonparametric; D013705:Temporomandibular Joint Disorders / Q000473:pathology*; D055815:Young Adult