The comparison of maxillary and mandibular dental arch size in male and female Papuan in Surabaya: A cross-sectional study

Abstract

Aim: The aim of this study was to analyze the differences in the size of maxillary and mandibular dental arch between Papuan males and females. Materials and Methods: An analytical cross-sectional study design was carried out in 12 Papuan males and 12 Papuan females aged above 18–25 years in the Surabaya. Raberin method was used to measure the maxillary and mandibular dental arches width in the dental cast in transversal (L33, L66, L77) and sagittal direction (L31, L61, L71). The statistical analysis was used to analyze the data normality by Kolmogorov–Smirnov test (P > 0.05). In addition, the independent t test was done to determine the differences between groups (P < 0.01). Results: The average sizes of the maxillary dental arch width in the transversal direction in Papuan males, respectively, L33, L66, and L77 were 35.86, 56.58, and 65.61 mm. The average sizes of the maxillary dental arch in the sagittal direction in men L31, L61, and L71 were 4.04, 35.60, and 46.41 mm. The average widths of the maxillary dental arch in a transversal direction in Papuan female L33, L66, and L77 were 32.45, 53.54, and 63 mm. The average sizes of the maxillary dental arch in the sagittal direction in female L31, L61, and L71 were 3.55, 31.94, and 42.42 mm. There was a significant difference between men and female maxillary dental arch in sagittal and transversal measurement (P < 0.01). Conclusion: Male Papuan has a bigger maxillary and mandibular dental arch width as compared to female Papuan. Evaluation of Papuan dental arches may help the orthodontist to determine the diagnosis and treatment plan in this population.