Alsaigh H, Alrashdi M. Geometric analysis of tooth size among different malocclusion groups in a Hispanic population.
Am J Orthod Dentofacial Orthop 2023;
164:646-656. [PMID:
37278676 DOI:
10.1016/j.ajodo.2023.03.022]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 03/01/2023] [Accepted: 03/01/2023] [Indexed: 06/07/2023]
Abstract
INTRODUCTION
Tooth size ratio is important for optimal dentofacial esthetics, occlusal interdigitation, and postorthodontic treatment stability. Tooth geometry influences tooth size ratio; therefore, tooth size normative data may not be practical across diverse ethnic groups. This study aimed to determine whether there are significant differences in 3-dimensional tooth size among patients in the Hispanic population with Angle Class I, II, and III malocclusions.
METHODS
The data were collected using intraoral scanned orthodontic study models representing Hispanic orthodontic patients with Angle Class I, II, and III malocclusions. The scanned models were digitized and transferred to a geometric morphometric system. Tooth sizes were determined, quantified, and visualized using contemporary geometric morphometric computational tools.
RESULTS
Tooth size was determined for all teeth and showed a significant difference in 4 out of 28 teeth: Maxillary right first molar, mandibular left second molar, mandibular right first molar and mandibular right second molar. This significant difference was noted among females and affected different malocclusion groups.
CONCLUSIONS
Tooth size discrepancy in the Hispanic population varies among malocclusion groups, and the variation is determined by the participant's gender.
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