Effects of mandibular setback on the temporomandibular joint: A comparison of oblique and sagittal split ramus osteotomy

Hu, Jing; Wang, Dazhang; Zou, Shujuan

doi:10.1016/s0278-2391(00)90915-7

Cited by 98 publications

(50 citation statements)

References 21 publications

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“…The IVRO technique has been used widely based on the rationale that it is useful for the patient that is developing temporomandibular dysfunction. 3,4 Later, the IVRO technique came to be applied for orthognathic surgical treatment of mandibular prognathism.…”

Section: Introductionmentioning

confidence: 99%

Hard and Soft Tissue Stability of Orthognathic Surgery

Kitahara

Nakasima

Kurahara

et al. 2009

The Angle Orthodontist

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Objective: To test the hypothesis that there is no difference in the stability of the hard and soft tissue changes following a surgical mandibular setback using a sagittal split ramus osteotomy or an intraoral vertical ramus osteotomy. Materials and Methods: The samples consisted of 45 female patients with mandibular prognathism, who were divided into two groups. Twenty-three underwent a sagittal split ramus osteotomy (SSRO) with rigid fixation by titanium mini-screws and maxillomandibular fixation (MMF) for 14.0 Ϯ 0.7 days. Twenty-two underwent intraoral vertical ramus osteotomy (IVRO) without rigid fixation, and MMF was released 21.5 Ϯ 3.3 days after surgery. Data were collected from standardized cephalometric radiographs taken at the start of preoperative orthodontic treatment (T1), immediately after surgery (MMF, T2), and the completion of postoperative treatment (T3). Angular measurements were compared on each of T1, T2, and T3. Results: There were no significant differences in the pretreatment hard and soft tissue morphology between the SSRO and IVRO. However, when fixation was released, the mandible was posteriorly positioned in the IVRO group. In the soft tissue profile, the mental region was located backward in the IVRO group at postoperative stage (T3). Conclusions:The hypothesis is rejected. The soft tissue profile of the IVRO group especially showed a retromandibular position after postoperative treatment in comparison with the SSRO group. This tendency of the IVRO group would contribute to the database for treatment planning and prediction. (Angle Orthod. 2009;79:158-165.)

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Section: Introductionmentioning

confidence: 99%

Hard and Soft Tissue Stability of Orthognathic Surgery

Kitahara

Nakasima

Kurahara

et al. 2009

The Angle Orthodontist

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“…Hu et al 10 showed posterior displacement of the condyle on the sagittal view radiographs of the TMJ after mandibular setback obtained by a muscle pull of the anterior and posterior temporalis and masseter. There is a possibility that changing the condyle influences the disk position after surgery.…”

Section: Discussionmentioning

confidence: 99%

Disk Position and Temporomandibular Joint Structure Associated with Mandibular Setback in Mandibular Asymmetry Patients

Kawakami

Yamamoto

Inoue

et al. 2009

The Angle Orthodontist

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Objective: To determine the changes in articular disk position and the temporomandibular joint (TMJ) structure in patients who had an asymmetric setback of the mandible performed by a bilateral sagittal split ramus osteotomy with manual positioning of the condyle. Materials and Methods: Twenty-two patients with skeletal Class III malocclusion being treated at Nara Medical University Hospital were evaluated using clinical examination and pre-and postoperative magnetic resonance images of their TMJs. Results: Changes in articular disk position after asymmetric setback surgery were not statistically significant, although a tendency of anterior displacement in the fossa was noted. The anterior and posterior joint spaces did not show significant changes, whereas the condyle head of the deviated or contralateral side tended to be positioned downward. Conclusion:The asymmetric setback of the mandible with intraoperative manual positioning of the condyle does not significantly change the disk position in the fossa. (Angle Orthod. 2009;79: 521-527.)

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“…46 Em mais de metade dos doentes em que são usadas miniplacas, os sintomas temporomandibulares melhoram ou mantêm-se. [47][48][49][50] O retorno dos côndilos à posição pré-operatória parece não depender significativamente da rigidez da fixação, embora se notem diferenças que sugerem que uma maior rigidez dificulte esse retorno. 50 Um estudo encontrou um índice de disfunção temporomandibular significativamente maior aquando da fixação com dois parafusos bicorticais do que com uma miniplaca, até cinco anos após cirurgia.…”

Section: Posicionamento Dos Côndilos Mandibularesunclassified

Osteossíntese no Tratamento Cirúrgico dos Prognatismos: Estado da Arte

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Amarante

2017

Acta Med Port

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Effects of mandibular setback on the temporomandibular joint: A comparison of oblique and sagittal split ramus osteotomy

Cited by 98 publications

References 21 publications

Hard and Soft Tissue Stability of Orthognathic Surgery

Hard and Soft Tissue Stability of Orthognathic Surgery

Disk Position and Temporomandibular Joint Structure Associated with Mandibular Setback in Mandibular Asymmetry Patients

Osteossíntese no Tratamento Cirúrgico dos Prognatismos: Estado da Arte

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