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

Introduction The purpose of this study was to evaluate the prevalence and patterns of tooth agenesis in subjects with Angle Class II Division 2 malocclusion compared with general orthodontic patients in Japan. Methods Panoramic radiographs, dental casts, and cephalograms of 76 patients with Class II...

Full description

Saved in:
Bibliographic Details
Published in:American journal of orthodontics and dentofacial orthopedics 2015-07, Vol.148 (1), p.123-129
Main Authors: Ota, Kanako, Arai, Kazuhito
Format: Article
Language:English
Subjects:
Adolescent
Adult
Anodontia - epidemiology
Anodontia - etiology
Dentistry
Female
Humans
Japan - epidemiology
Male
Malocclusion, Angle Class II - complications
Prevalence
Young Adult
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Introduction The purpose of this study was to evaluate the prevalence and patterns of tooth agenesis in subjects with Angle Class II Division 2 malocclusion compared with general orthodontic patients in Japan. Methods Panoramic radiographs, dental casts, and cephalograms of 76 patients with Class II Division 2 malocclusions (52 female, 24 male) and 270 orthodontic patients as the control group (168 female, 102 male) who were 14 years of age or older were selected. The prevalences of tooth agenesis in this cohort and in each tooth type were calculated and compared between the groups with the chi-square test. Odds ratios and corresponding 95% confidence intervals were also calculated. Results The prevalence of tooth agenesis excluding the third molars was significantly higher in the Class II Division 2 group (22.4%) than in the control group (11.9%) ( P  
ISSN:0889-5406
1097-6752
DOI:10.1016/j.ajodo.2015.02.023