Odontometric analysis of molars for sex determination

• Main Authors: Larissa Chaves Cardoso Fernandes (Author), Carolina Vieira Lucena Veloso (Author), Julyana de Araújo Oliveira (Author), Paloma Rodrigues Genu (Author), Bianca Marques Santiago (Author), Patrícia Moreira Rabello (Author)
• Format: Book
• Published: Universidade Estadual de Campinas, 2016-10-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

Aim: To investigate the existence of sexual dimorphism between the first and second permanent molars. Methods: A cross-sectional, observational, blind study using comparative and statistical descriptive procedures. The sample included 50 pairs of plaster casts from undergraduate dental students (25 men/25 women) from the Federal University of Paraíba, João Pessoa/PB, Brazil, aged 20-26 years. Odontometric measurements of first and second maxillary/mandibular, right/left permanent molars were performed. Mesiodistal (MD) and buccolingual/palatal (BL/BP) widths and the distance between the lingual cusps of corresponding molars in opposite quadrants, were measured. The data were analyzed by Student's t test and ANOVA with Bonferroni (p≤0.05). Results: The crowns of all first molars were statistically larger in men than in women (p<0.05). Maxillary and mandibular left second molars (#27 and #37) did not differ in their MD widths (p=0.66, p=0.75), whereas mandibular left and right second molars (#37 and #47) showed statistically different BL widths (p=0.007 and p=0.008). As to the distance between the lingual cusps, only the first left-to-right mandibular molars (#36-46) showed no sex dimorphism (p=0.107). Conclusions: Molars are larger in males than in females. Individually, first molars demonstrated higher evidence of sex distinction than second molars.

Item Description

10.20396/bjos.v15i1.8647109
1677-3225