青年人群正常颞下颌关节窝顶厚度CBCT测量分析

doi:10.13591/j.cnki.kqyx.2022.10.009

Abstract

Abstract: Objective To investigate glenoid fossa roof thickness of normal temporomandibular joint(TMJ) in Chinese young people by CBCT in order to provide theoretical guidance for fossa arthroplasty in computer aided navigation surgery of temporomandibular joint ankylosis. Methods One hundred and thirty-two volunteers (264 normal temporomandibular joints) were selected and underwent large field of view CBCT scans. After 3D reconstruction with image processing software, roof thickness at the thinnest part of mandibular glenoid fossa was identified and measured in both coronal and sagittal views and results were statistically analyzed according to gender, joint side and age. Results In the coronal view, measurements of volunteers were 0.940 (0.748,1.311) mm, 1.040 (0.731,1.675) mm for males, and 0.883 (0.753,1.199) mm for females. In the sagittal view, measurements of volunteers were 0.903 (0.720,1.331) mm, 1.073 (0.755,1.585) mm for males, and 0.865 (0.706,1.090) mm for females. Four sets of measurements of roof thickness of glenoid fossa were obtained from each individual. Comparison was conducted between males and females. In the right joint (P<0.05), roof thickness of glenoid fossa in both coronal and sagittal views was greater in males than females, and the difference was statistically significant; no significant difference found in the left joint (P>0.05). There were significant differences was found between two sides in coronal view in all individuals (P<0.05). Thickness of the left glenoid fossa roof was greater than the right, no difference between two sides in sagittal view (P>0.05). No significant difference was found between different age groups in both male and female samples (P>0.05). Conclusion In preoperative planning for temporomandibular joint ankylosis surgery using navigation system, measuring roof thickness of normal temporomandibular glenoid fossa for unilateral TMJ ankylosis is a significant reference in clinical practice.

Key words: temporomandibular joint ankylosis, navigation surgery, arthroplasty, thickness of glenoid fossa roof

CLC Number:

R782.6

WANG Xiaona, HE Dongning, LU Xuguang, HE Yang. Investigation of roof thickness of normal temporomandibular glenoid fossa in young people by CBCT[J]. Stomatology, 2022, 42(10): 911-916.

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Investigation of roof thickness of normal temporomandibular glenoid fossa in young people by CBCT

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