Distraction osteogenesis in the management of temporomandibular joint ankylosis

Manjunath, G. S.; Rao, S. Girish; Rajkumar, GC

doi:10.1016/j.ijom.2007.08.151

Cited by 2 publications

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“…Increasing the rate affects bone union nonunion and is associated with severe soft-tissue contractures. 23 Intraoral distraction is considered an acceptable technique used with post ankylotic mandibular defects and was advocated by Zanaty et al 24 Extraoral mandibular distraction is considered also a reliable technique used with post ankylotic mandibular defects and was advocated by Manjunath et al 25 An adult mandible model was used with an average biting force because according to literature the ideal age to perform mandibular distraction for post ankylosis patient is post maturity to decrease the possibility of relapse. 26 Several types of osteotomies are used with mandibular distraction osteogenesis of post ankylotic patient; however, we used osteotomy proposed by Khan et al 26 to make a single oblique body osteotomy at the angle to distract both the body and ramus in the same time.…”

Section: Discussionmentioning

confidence: 99%

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The Stress Concentration and Biomechanical Properties of the Intra-oral Distractors and the Extra-oral Distractors Used in Treatment of Post Ankylosis Facial Asymmetric Patients: A Finite Element Analysis Study

Elhadidi

Askar

Sayed

2020

Journal of Craniofacial Surgery

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Assessment of stress and micromotions using finite element analysis along both the intraoral and the extraoral distractors devices used in the mandibular distraction of post temporomandibular joint ankylosis deformed mandible patients. The process of finite element analysis was carried out to assess distraction models. The first model was an extraoral mandibular distraction model and the second model was an intraoral mandibular distraction model. To analyze the stress state, 2 vertical loads were applied on the defective and normal side respectively by a 3D finite element ball model. The intraoral system observed lower stress (4.5 MPa) in the mandibular bone compared to the extra-oral system (11.5 MPa). The results revealed that the intraoral system observed higher stress on the distractor fixing points (392.21 MPa) compared to the extra-oral fixing points (12.62 MPa). The results revealed that the extra-oral system reflected higher displacement on the bone surrounding the screws of about 3720 mm compared to the intraoral system 1414.6 mm. Internal devices give better shielding to the bone and induce fewer stresses over the mandibular, so it is more advisable to be used. The external devices permit greater distraction length because the pins and the distractor main body are subjected to fewer stresses.

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Section: Discussionmentioning

confidence: 99%

“…Intraoral distraction is considered an acceptable technique used with post ankylotic mandibular defects and was advocated by Zanaty et al 24 Extraoral mandibular distraction is considered also a reliable technique used with post ankylotic mandibular defects and was advocated by Manjunath et al 25 …”

Section: Discussionmentioning

confidence: 99%

The Stress Concentration and Biomechanical Properties of the Intra-oral Distractors and the Extra-oral Distractors Used in Treatment of Post Ankylosis Facial Asymmetric Patients: A Finite Element Analysis Study

Elhadidi

Askar

Sayed

2020

Journal of Craniofacial Surgery

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Multidisciplinary treatment of a patient with TMJ ankylosis and a severe dentofacial discrepancy: A case report

Khan,

Nazir,

Hanif

2024

J Orthod

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Introduction: Temporomandibular joint (TMJ) ankylosis is a debilitating condition characterised by the fusion of bony or fibrous tissues in the TMJ, resulting in restricted mouth opening, functional challenges and facial deformities. This report highlights the complexity and multifaceted nature of TMJ ankylosis and emphasises the significance of early intervention and a multidisciplinary approach. Distraction osteogenesis has emerged as a successful method for managing TMJ ankylosis and associated facial asymmetry. Post-distraction orthodontic management is essential to address occlusal changes, including posterior open bite and crossbite. Diagnosis and treatment plan: A 17-year-old boy with unilateral right-sided TMJ ankylosis presented with restricted mouth opening, facial asymmetry and functional difficulties. Multidisciplinary treatment planning involved distraction osteogenesis, condylectomy, coronoidectomy and orthodontic correction to achieve proper occlusion and facial aesthetics. Results: The treatment significantly improved facial aesthetics, mouth opening, occlusion and the patient’s confidence and self-esteem. Conclusion: This case report underscores the complexity of TMJ ankylosis and the need for a comprehensive approach, including surgical and orthodontic interventions. Collaboration among healthcare professionals and ongoing research is vital to refine treatment approaches and improve the quality of life for patients with TMJ ankylosis.

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Distraction osteogenesis in the management of temporomandibular joint ankylosis

Cited by 2 publications

References 1 publication

The Stress Concentration and Biomechanical Properties of the Intra-oral Distractors and the Extra-oral Distractors Used in Treatment of Post Ankylosis Facial Asymmetric Patients: A Finite Element Analysis Study

The Stress Concentration and Biomechanical Properties of the Intra-oral Distractors and the Extra-oral Distractors Used in Treatment of Post Ankylosis Facial Asymmetric Patients: A Finite Element Analysis Study

Multidisciplinary treatment of a patient with TMJ ankylosis and a severe dentofacial discrepancy: A case report

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