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Triangular-shaped incisor crowns and crowding.

Authors
Rhee, SH; Nahm, DS
Citation
American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics, 118(6):624-628, 2000
Journal Title
American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics
ISSN
0889-54061097-6752
Abstract
The purpose of this study was to establish if there is a correlation between the shape of the labial crowns of the incisors and crowding. Plaster cast models of 69 untreated individuals (30 males and 39 females) were evaluated. The casts were selected randomly from the collection at Seoul National University and Ajou University. With the use of Little's irregularity index, the sample was divided into 2 groups, a crowded group and a normal group. Repeated measurements of the maximum mesiodistal width of the incisal and cervical areas of the incisors were taken by means of a digital vernier caliper and a ratio of these measurements was calculated. The mean value for the crowded group was significantly larger in the incisal area (P <.01) and smaller in the cervical areas (P <.01) than corresponding values in the normal group. These ratios were correlated with the irregularity index (Pearson r(2) from 55% to 65%). The value obtained from the incisor width ratio in the normal group can be useful for the diagnosis and treatment of crowded malocclusion.
MeSH terms
Case-Control StudiesFemaleHumansIncisor/*anatomy & histologyMaleMalocclusion/*etiologyOdontometryRegression AnalysisStatistics, NonparametricTooth Crown/*anatomy & histology
DOI
10.1067/mod.2000.110812
PMID
11113796
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Dentistry
AJOU Authors
이, 승훈
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