Evaluation of condyle-fossa relationships in adolescents with various skeletal patterns using cone-beam computed tomography.

J. Chae, Jae Hyun Park, Kiyoshi Tai, Kyosuke Mizutani, Satoshi Uzuka, Wataru Miyashita, Hye Young Seo
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引用次数: 21

Abstract

OBJECTIVES To evaluate the condyle-fossa relationship in adolescents with various skeletal patterns using cone-beam computed tomography (CBCT). MATERIALS AND METHODS CBCT images obtained in 120 adolescent patients were used for this study. The patients were divided into 3 groups according to 3 criteria: (1) age (early, middle, and late adolescence); (2) facial height ratio or Jarabak quotient (hyperdivergent, normodivergent, and hypodivergent); and (3) ANB classification (Class I, Class II, and Class III). Temporomandibular joint space (TMJS: AS, anterior space; SS, superior space; PS, posterior space; MS, medial space; LS, lateral space), width and depth of the condyle (MLT, mediolateral thickness; APT, anteroposterior thickness), articular slope (ArS)m and vertical height of the fossa (VHF) were measured and compared using CBCT. RESULTS Differences in condyle-fossa relationships were not significantly different between male and female adolescents, but were significantly different (P < .05) between left and right sides. The mean values showed no statistical differences according to age and skeletal pattern. Most measurements in the sagittal view showed that SS was the greatest, and the mean ratio of AS to SS to PS was 1.00 to 1.27 to 1.19, respectively. The mean values of coronal MS and LS were not significantly different. CONCLUSIONS There were almost no statistical differences in the TMJS in adolescents across various factors except between left and right sides.
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使用锥形束计算机断层扫描评估不同骨骼类型青少年的髁突-窝关系。
目的应用锥形束ct (cone-beam computed tomography, CBCT)评价不同骨型青少年的髁突-窝关系。材料与方法本研究使用120例青少年患者的scbct图像。根据3个标准将患者分为3组:(1)年龄(青春期早期、中期和晚期);(2)面部高度比或贾拉巴克商(高发散、无发散和低发散);(3) ANB分类(I类、II类、III类)。颞下颌关节间隙(TMJS: AS,前间隙;SS,空间优越;PS,后空间;MS,中间空间;LS,外侧间隙),髁突宽度和深度(MLT,中外侧厚度;采用CBCT测量并比较APT、前后厚度、关节斜率(ArS)m和窝垂直高度(VHF)。结果男女青少年髁窝关系差异无统计学意义,但左右两侧差异有统计学意义(P < 0.05)。不同年龄和骨骼类型的平均值无统计学差异。矢状面多数测量结果显示SS最大,AS / SS / PS的平均比值分别为1.00 ~ 1.27 ~ 1.19。冠状MS和LS的平均值无显著性差异。结论青少年颞下颌关节除左右侧差异外,各因素间差异无统计学意义。
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