Evaluation of condylar dimension and position following rapid maxillary expansion with tooth- or tooth-bone-borne appliances

• 발행기관: 대한치과교정학회
• 저자명: Merve Nur Eglenen Seden Akan Derya Germec-Cakan
• 간행물 정보: 『The Korean Journal of Orthodontics』제54권 제6호, 422~431쪽, 전체 10쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 2024.11.25

국문 초록

Objective: To assess and compare changes in the dimension and position of the mandibular condyle after tooth-borne (Hyrax) and tooth-bone-borne (Hybrid Hyrax) expansion. Methods: Twenty-five patients who underwent expansion with either tooth-borne appliances (8 girls, 5 boys; mean age 14.3 ± 2.3 years) or tooth-bone-borne appliances (6 girls, 6 boys; mean age 13.8 ± 2.2 years) were examined. Condylar and glenoid fossa morphology before (T0) and 3 months after (T1) expansion were evaluated using cone-beam computed tomography. Condylar measurements (anterior, posterior, and superior joint spaces; condylar height, length, and width), along with sagittal and vertical skeletal and maxillary transversal measurements, were analyzed using Dolphin Imaging software. Wilcoxon and Paired t tests were used for T0 and T1 evaluations, and the Mann–Whitney U test for intergroup comparisons. Results: At both T0 and T1, no statistically significant differences were observed between the groups in terms of condylar dimensions or the position of the condyle within the glenoid fossa. Maxillary transversal measurements increased after expansion in both groups (P < 0.01), with a significantly greater increase in first premolar width in the Hyrax group (P < 0.05). The vertical position of the posterior teeth showed no noteworthy changes (P > 0.05), except for the right second premolar. Temporomandibular joint measurements did not significantly change in either group after treatment (P > 0.05). Conclusions: Neither tooth-borne nor tooth-bone-borne expansion caused significant changes in the condylar dimensions and position at the end of treatment.

목차

INTRODUCTION

MATERIALS AND METHODS

RESULTS

DISCUSSION

CONCLUSIONS

REFERENCES

키워드

Temporomandibular joint Expansion Appliances Computed tomography