Relationship between dental size and normal occlusion in Brazilian patients

Brazilian Dental Journal

Sheila Medina Freire¹  Clarice Nishio¹  Alvaro De Moraes Mendes¹  Cátia Cardoso Abdo Quintão¹  Marco Antonio Almeida¹ 

[1] ,Rio de Janeiro State University Department of Orthodontics Rio de Janeiro RJ ,Brazil

关键词: Bolton discrepancy;    normal occlusion;    overbite;    curve of Spee;   

DOI  :  10.1590/S0103-64402007000300015

来源: SciELO

【 摘 要 】

The present study was performed on dental casts and lateral cephalometric films of 30 Caucasian Brazilian individuals (15 males and 15 females) aged 18 to 27 years and 4 months, all presenting normal occlusion and satisfactory facial profile. The aims were to investigate the existence of dental discrepancies according to Bolton's criteria, to obtain mean values for overbite, overjet, curve of Spee and interincisal angle, and to demonstrate any correlation among these parameters. A single calibrated operator measured each variable characteristics and the process was recorded twice with an accurate modified digital caliper. It was observed that the sample of normal occlusion did not present any dental discrepancy among the 12 teeth of opposite arches. The overall ratio (91.46) and anterior ratio (77.83) were in accordance with those proposed by Bolton. The mean values for normal occlusion in this Brazilian sample were defined as: 2.45 mm for overbite; 1.92 mm for overjet; 1.01 mm for curve of Spee and 129.57° for interincisal angle. A statistically significant correlation was found between overjet and overbite.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License