Application of Virtual Mandibular Position in Temporomandibular Jont Reconstruction With Costochondral Graft in Children Jaw Deformity

Peking University

Status: Enrolling

Conditions: Temporomandibular Joint Ankylosis; Facial Asymmetry

Treatments: Procedure: temporomandibular jont reconstruction with costochondral transplantation

Study type: Observational

Funder types: Other

Identifiers

NCT03845088

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Details and patient eligibility

About

Hypothesis：Computer-aided design virtual mandibular position is feasible for costochondral graft growing and occlusion stabilizing in the one-stage treatment of children temporomandibular joint ankylosis (TMJA) or condyle absence with jaw deformity.

Methods: The inclusion criteria is children patients younger than 12 years old with unilateral TMJA or condyle absence. A virtual mandibular position is designed preoperatively according to the CT data of jaw and dentition. 3D printed templates and occlusal splints are used to guide the costochondral graft and mandibular position. During surgery, the affected ramus is reconstructed with costochondral grafting under the virtual mandibular position. After surgery, the occlusal splint is fixed to maxilla at least one month, and then, replaced by orthodontic functional appliance to promote downward growth of the maxilla. Occlusion, facial symmetry, costochondral graft growing would be evaluated and analysed until adulthood.

Enrollment: 15 estimated patients

Sex: All

Ages: 6 to 12 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• <12 years old
• Unilateral temporomandibular joint ankylosis or condyle absence；
• Temporomandibular joint reconstructed with costochondral graft；

Exclusion criteria

• Bilateral temporomandibular joint ankylosis or condyle absence
• Combined with systematic disease

Trial design

15 participants in 1 patient group

Children TMJA or condyle absence with Jaw Deformity

Description:

inclusion criteria: \<12 years old; Unilateral temporomandibular joint ankylosis or condyle absence； Temporomandibular joint reconstructed with costochondral graft；

Treatment:

Procedure: temporomandibular jont reconstruction with costochondral transplantation