Evaluation of reproduced 3D TMJ movement in preoperative patients with facial asymmetry using 3D CT image and tracking camera system

3D TMJ simulation;3D analysis of mandibular movement;intra-articular distance changes;axial condylar angle;facial asymmetry;617

치과대학 치의과학과 ;

University:서울대학교 대학원

关键词: 3D TMJ simulation;    3D analysis of mandibular movement;    intra-articular distance changes;    axial condylar angle;    facial asymmetry;    617;   

Others  :  http://s-space.snu.ac.kr/bitstream/10371/131128/1/000000018042.pdf

美国|英语

来源: Seoul National University Open Repository

【 摘 要 】

deviated side and non-deviated side. Mandibular movements were analyzed three-dimensionally. The intra-articular distance between the condyle and glenoid fossa was recorded and compared between Group I and Group II. The differences between the right and left axial condylar angles and anteroposterior positions were measured.Results: The average condylar path length per one cycle in Group I (55.01±17.97) was longer than in Group II (44.38±13.67). The maximum linear distance in Group I (16.71±6.80) was longer than in Group II (13.05±5.92), and the difference between bilateral sides was significantly larger in Group I (p <0.05). The average intra-articular distance between condyle and glenoid fossa was shorter in Group I than Group II, especially at the lowest point (p < 0.05). The difference between the right and the left axial condylar angles was significantly larger in Group I than Group II (p <0.05) and the anteroposterior condylar position difference was slightly larger in Group I. Conclusion: We determined that the range of temporomandibular joint (TMJ) movement is related to the severity of facial asymmetry and is impacted by the affected side. We propose that the reduced joint space may cause TMJ overloading in severe facial asymmetry, which can lead to internal TMJ derangement. Because TMJ movement is influenced by disc position and other pathologic changes, further studies using MRI data will be needed.