Comparison of distraction osteogenesis versus costochondral graft in reconstruction of temporomandibular joint condylectomy with disc preservation.
OBJECTIVE
This study compared transport distraction with costochondral graft in the reconstruction of temporomandibular joint (TMJ) with disc preservation.


METHODS
Bilateral condylectomies with disc preservation were conducted in 12 adult goats. Transport distraction of the mandibular ramus was performed on 1 side and costochondral graft on the other side. Jaw movements, TMJ healing, and condylar remodeling were assessed by clinical, radiologic, and histologic examinations.


RESULTS
Transport distraction and costochondral graft established a new condyle separating from the preserved disc with a joint space. Both techniques showed no significant difference in ankylosis scores up to 24 weeks. Signs of calcification were not noted in the transport distraction or costochondral graft side. No significant change of maximal jaw movements was found at any time point from 2 to 24 weeks.


CONCLUSIONS
Distraction osteogenesis is an effective reconstruction method for TMJ reconstruction. No significant difference between these 2 techniques in reconstruction of the TMJ was noted.
Department of Oral and Maxillofacial Surgery, University of Hong Kong, Hong Kong, China.
Li Wu
LW
Zheng
Li
L
Ma
Xiao Jian
XJ
Shi
Roger A
RA
Zwahlen
Lim Kwong
LK
Cheung
D000818:Animals; D000844:Ankylosis / Q000209:etiology / Q000473:pathology; D001178:Arthroplasty / Q000379:methods*; D001861:Bone Regeneration / Q000502:physiology; D016723:Bone Remodeling / Q000502:physiology; D002113:Calcification, Physiologic / Q000502:physiology; D002356:Cartilage / Q000000981:diagnostic imaging / Q000473:pathology / Q000637:transplantation*; D006041:Goats; D008335:Mandibular Condyle / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D023421:Models, Animal; D019857:Osteogenesis, Distraction / Q000295:instrumentation / Q000379:methods*; D010027:Osteotomy / Q000379:methods; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D019651:Plastic Surgery Procedures / Q000379:methods*; D013704:Temporomandibular Joint / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D019224:Temporomandibular Joint Disc / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D013997:Time Factors; D014945:Wound Healing / Q000502:physiology