3D CBCT Evaluation of Condyle Position in Skeletal Class I & Class III Growing Subjects

Abstract

Introduction: Evaluation of temporo-mandibular joint (TMJ) anatomy and function is an essential part of orthodontic diagnosis and treatment planning. It has been hypothesized that dental and skeletal malocclusions alter the functional loading of TMJ which can affect joint morphology.Objective: Three dimensional (3D) evaluation of condylar position using CBCT in skeletal Class I and Class III growing subjects. Result: Paired t-Test revealed no significant difference between right and left sides of condyle in skeletal Class I as well as Class III subjects. Independent t-test and Mann-Whitney U test showed no significant difference between position of condyle in Class I and Class III subjects.Conclusion: 3D CBCT analysis shows no significant difference in condylar position of skeletal Class I and Class III subjects.

Assessment of the Morphology and Degenerative Changes in the Temporomandibular Joint Using CBCT according to the Orthodontic Approach: A Scoping Review

“…The association of joint space features and condylar positions with maxillofacial morphology and malocclusion was addressed in 19 articles included in the systematic review. These studies were published between 2012 and 2021 and involved patient populations from China [22,46], Brazil [35,44,47], India [48,49], Peru [34], Iran [25], Nepal [50], Turkey [51,52], South Korea [24,[53][54][55], Egypt [56,57], and Ukraine [58]. Sample sizes ranged from 20 [50] to 180 [35] patients.…”

“…These studies were published between 2012 and 2021 and involved patient populations from China [22,46], Brazil [35,44,47], India [48,49], Peru [34], Iran [25], Nepal [50], Turkey [51,52], South Korea [24,[53][54][55], Egypt [56,57], and Ukraine [58]. Sample sizes ranged from 20 [50] to 180 [35] patients. A summary of the descriptive characteristics of included articles is provided in Table 4.…”

“…In another study, the authors did not find an optimal condyle position in any of the patients presenting with a class III malocclusion [58]. A significant number of the articles included in the review did not prove a statistically significant correlation between mandibular head position and articular joint space morphology and anterior malocclusions [25,47,50,52,54,55]. Only one study, but based on a large study group (120 patients), evaluated the effect of the extent of chin deviation in skeletal and dental class III malocclusion on the position of the condyle in the joint space.…”