Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Oral and maxillofacial surgeryA hypothesis on the desired postoperative position of the condyle in orthognathic surgery: a review
Section snippets
Disk position
Disk displacement is a common abnormality seen in images of the TMJ. Usually the displacement is anterior, anterior lateral, or anterior medial. In the normal joint, the posterior band of the biconcave disk is located superior to the condyle in the closed-mouth position.11, 12, 13, 14, 15 Normal disk position has been defined in previous studies without reference to the skeletal pattern and occlusion16, 17; however, images different from those for normal joint categories have been recognized in
Conclusions
Most surgeons rely on manual repositioning after sagittal split osteotomy to obtain the best mandibular proximal segment relationship with the condylar fossa. In repositioning the proximal segment, skilled surgeons feel the degree and direction of stress on the proximal segment and remember the data of the condylar position experienced previously. Recently, application of 3D CT for orthognathic surgical planning, especially the function of 3D virtual osteotomy, has been presented.99, 100, 101,
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Cited by (42)
Investigating the relationship between the remodeling of TMJ bony structures and condylar rest position following orthognathic surgery in class II and class III skeletal malocclusions
2023, Journal of Oral and Maxillofacial Surgery, Medicine, and PathologyCondylar repositioning according to digital bite registration method for virtual orthognathic surgery planning: A series of 49 consecutive patients
2022, American Journal of Orthodontics and Dentofacial OrthopedicsCitation Excerpt :Our study showed a higher degree of error; this could be explained by the placement of the condyle in a more anterior or posterior position for Class II malocclusion and an intermediate position for Class III malocclusion. It may also be explained by compensatory postures to mask esthetic anomalies and ease chewing or speech difficulties.17 The study of the difference in positioning between groups with symmetries and asymmetries would have been interesting but was not conducted because of the small sample size of patients with asymmetries; however, it could be the topic of further studies.
Effect of computer-assisted design and manufacturing cutting and drilling guides accompanied with pre-bent titanium plates on the correction of skeletal class II malocclusion: a randomized controlled trial
2021, International Journal of Oral and Maxillofacial SurgeryMovement of the proximal segment after intraoral vertical ramus osteotomy versus short lingual osteotomy with physiological positioning strategy
2020, Journal of Cranio-Maxillofacial SurgeryThree-dimensional quantitative assessment of surgical stability and condylar displacement changes after counterclockwise maxillomandibular advancement surgery: Effect of simultaneous articular disc repositioning
2018, American Journal of Orthodontics and Dentofacial OrthopedicsCitation Excerpt :This study is the first to assess condylar spatial changes after CMMA and TMJ articular disc repositioning using shape correspondence analysis, which allows a unique and symmetric point-to-point correspondence across all measured surfaces. The position and morphology of the disc has been shown to be closely related to the stress suffered by the joint.5 Gonçalves et al8 observed greater relapses in patients with preoperative disc displacement who had mandibular advancement without disc repositioning.
Counterclockwise maxillomandibular advancement surgery and disc repositioning: can condylar remodeling in the long-term follow-up be predicted?
2017, International Journal of Oral and Maxillofacial Surgery