Progressive condylar resorption after mandibular advancement

Kobayashi, Tadaharu; Izumi, Noriaki; Kojima, Takao; Sakagami, Naoko; Saito, Isao; Saito, Chikara

doi:10.1016/j.bjoms.2011.02.006

Cited by 126 publications

(122 citation statements)

References 16 publications

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“…Morphological changes of the condyles are observed frequently following the surgical advancement of the mandible Hoppenreijs et al 1999;Borstlap et al 2004;Motta et al 2011;Kobayashi et al 2012;Franco et al 2013;Hoppenreijs et al 2013). In contrast to the self-limiting physiological CR, PCR is characterized by severe morphological changes of the condylar shape, a reduction of condylar volume and postoperative skeletal relapse (Chen et al 2013;Hoppenreijs et al 2013;Xi et al 2013).…”

Section: Discussionmentioning

confidence: 94%

“…Data from table 4 proved that when the reduction in condylar volume exceeded 17% of the preoperative condylar volume, a significant relapse was noticed in the horizontal as well as vertical direction. Only in this small group, the anterior facial height increased, indicating the onset of an anterior open bite, while the posterior facial height decreased, suggesting a reduction in the condylar and/or ramus height, both of which were indicative for PCR (Swennen and Schutyser 2006;Joss and Vassalli 2009;Nada et al 2011;Kobayashi et al 2012). A postoperative CR of more than 17% of the original condylar volume could therefore be indicative for PCR.…”

Section: Discussionmentioning

confidence: 95%

“…Regarding a mean postoperative condylar resorption of 105 mm 3 , it was unlikely that this relatively small measurement error in condylar volume would have influenced the results significantly.In literature, large surgical advancements, female gender and a high mandibular plane angle are associated with a higher incidence of PCR(Scheerlinck et al 1994;Hoppenreijs et al 1999;Borstlap et al 2004;Kobayashi et al 2012). The mean mandibular advancement of 4.6 mm for the 56 patients is comparable to previous studies on BSSO advancement with rigid fixation(Mobarak et al 2001;Eggensperger et al 2006;Joss and Thuer 2008;Nada et al 2011;den Besten et al 2013;Hoppenreijs et al 2013).…”

mentioning

confidence: 98%

See 2 more Smart Citations

3D analysis of condylar remodelling and skeletal relapse following bilateral sagittal split advancement osteotomies

Schreurs

Loon

et al. 2015

Journal of Cranio-Maxillofacial Surgery

100

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Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 95%

mentioning

confidence: 98%

See 1 more Smart Citation

3D analysis of condylar remodelling and skeletal relapse following bilateral sagittal split advancement osteotomies

Schreurs

Loon

et al. 2015

Journal of Cranio-Maxillofacial Surgery

100

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“…During the study period none of our patients showed the aforementioned signs. Risk factors related to condylar resorption (mandibular hypoplasia, counterclockwise rotation of the mandible, high mandibular plane angle, posterior inclination of condylar neck) were not present in any of our patients [27] .…”

Section: Discussionmentioning

confidence: 96%

Assessment of clinical and radiographic changes of the mandibular condyle following orthognathic surgery

Akhlaghi¹,

Khayampour²,

Motamedi³

et al. 2017

Int J Dentistry Res

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Aim: Changes of the mandibular condyle are unwanted and unpredictable complications of orthognathic surgery. This pilot study investigated the prevalence and severity of mandibular condylar changes after orthognathic surgery. Materials and Method: In this prospective study 20 patients with class II and III malocclusion who needed orthognathic surgery were evaluated. Ramus height, condylar width, joint pain, overjet and overbite, angular changes on lateral cephalogram, maximal mouth opening, maxillary and mandibular movements before and 6 months after surgery were assessed. Results: In this study condylar atrophy was radiographically evident on panoramic radiographs of 6 (30%) of the patients; one patient was treated for class II malocclusion and the other 5 were treated for class III malocclusion. Conclusion: This study showed radiographically evident condylar atrophy in 30% after surgery; however none had any related clinical signs or symptoms. None of the cases that developed condylar atrophy postsurgery correlated significantly with the variables assessed in this short term pilot study. Further studies and longer follow-up is needed to validate the results.

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“…On the other hand, specific condylar displacement changes during articular disc repositioning surgery have been investigated as a potential factor inducing condylar remodeling in the long-term follow-up 14 . Moreover, it has been reported that the degree of mandibular advancement performed may also contribute to skeletal relapse and condylar resorption 11 .…”

Section: Introductionmentioning

confidence: 99%

Counterclockwise maxillomandibular advancement surgery and disc repositioning: can condylar remodeling in the long-term follow-up be predicted?

Gomes

Cevidanes

Gomes³

et al. 2017

International Journal of Oral and Maxillofacial Surgery

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This study investigated predictive risk factors of condylar remodeling changes after counterclockwise maxillomandibular advancement (CCW-MMA) and disc repositioning surgery. Forty-one female patients (75 condyles) treated with CCW-MMA and disc repositioning had cone beam computed tomography (CBCT) scans taken pre-surgery, immediately after surgery, and at an average 16 months post-surgery. Pre- and post-surgical three-dimensional models were superimposed using automated voxel-based registration on the cranial base to evaluate condylar displacements after surgery. Regional registration was performed to assess condylar remodeling in the follow-up period. Three-dimensional cephalometrics, shape correspondence (SPHARM-PDM), and volume measurements were applied to quantify changes. Pearson product-moment correlations and multiple regression analysis were performed. Highly statistically significant correlation showed that older patients were more susceptible to overall condylar volume reduction following CCW-MMA and disc repositioning (P ≤ 0.001). Weak but statistically significant correlations were observed between condylar remodeling changes in the follow-up period and pre-surgical facial characteristics, magnitude of the surgical procedure, and condylar displacement changes. After CCW-MMA and disc repositioning, the condyles moved mostly downwards and medially, and were rotated medially and counterclockwise; displacements in the opposite direction were correlated with a greater risk of condylar resorption. Moreover, positional changes with surgery were only weakly associated with remodeling in the follow-up period, suggesting that other risk factors may play a role in condylar resorption.

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Progressive condylar resorption after mandibular advancement

Cited by 126 publications

References 16 publications

3D analysis of condylar remodelling and skeletal relapse following bilateral sagittal split advancement osteotomies

3D analysis of condylar remodelling and skeletal relapse following bilateral sagittal split advancement osteotomies

Assessment of clinical and radiographic changes of the mandibular condyle following orthognathic surgery

Counterclockwise maxillomandibular advancement surgery and disc repositioning: can condylar remodeling in the long-term follow-up be predicted?

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