Prevalence and patterns of tooth agenesis in Angle Class II Division 2 malocclusion in Japan

作者: Kanako Ota , Kazuhito Arai

DOI: 10.1016/J.AJODO.2015.02.023

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摘要: Introduction The purpose of this study was to evaluate the prevalence and patterns tooth agenesis in subjects with Angle Class II Division 2 malocclusion compared general orthodontic patients Japan. Methods Panoramic radiographs, dental casts, cephalograms 76 malocclusions (52 female, 24 male) 270 as control group (168 102 who were 14 years age or older selected. prevalences cohort each type calculated between groups chi-square test. Odds ratios corresponding 95% confidence intervals also calculated. Results excluding third molars significantly higher (22.4%) than (11.9%) (P  Conclusions Compared patient population, permanent observed approximately times more frequently, a distinctive pattern found

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