Edward Ellis1, Emet D Schneiderman, David S Carlson. 1. Oral and Maxillofacial Surgery, The University of Texas Southwestern Medical Center, Dallas, TX 75390-9109, USA. Edward.Ellis@UTSouthwestern.edu
Abstract
PURPOSE: The study goal was to investigate growth of the mandible after temporomandibular joint reconstruction in juvenile monkeys. MATERIALS AND METHODS: Sixteen juvenile monkeys (Macaca mulatta) were used as experiment subjects. Animals were equally divided into 4 experimental groups based on the method of temporomandibular joint reconstruction after bilateral condylar excision via extraoral vertical ramus osteotomies. Group Condyle animals had their condylar segments immediately replaced to serve as surgical controls. Group Bone animals were reconstructed with a bony strut. Group sternoclavicular joint (SCJ) animals were reconstructed with the sternal end of their clavicles. Group costochondral junction (CCJ) animals were reconstructed with costochondral junction of ribs. Standardized lateral cephalometric radiographs with the aid of tantalum bone markers were used to evaluate mandibular growth. Twenty animals were used as controls and were allowed to grow undisturbed for an 18-month period (Group Control). RESULTS: All animals showed good mandibular function and a Class I molar relationship after an 18-month follow-up period. Statistical and graphic comparisons showed no significant difference in mandibular growth among any of the groups. CONCLUSIONS: The results of this investigation suggest that, within the limits of this model, the choice of autograft for condyle replacement may be irrelevant. Copyright 2002 American Association of Oral and Maxillofacial Surgeons J Oral Maxillofac Surg 60:1461-1470, 2002
PURPOSE: The study goal was to investigate growth of the mandible after temporomandibular joint reconstruction in juvenile monkeys. MATERIALS AND METHODS: Sixteen juvenile monkeys (Macaca mulatta) were used as experiment subjects. Animals were equally divided into 4 experimental groups based on the method of temporomandibular joint reconstruction after bilateral condylar excision via extraoral vertical ramus osteotomies. Group Condyle animals had their condylar segments immediately replaced to serve as surgical controls. Group Bone animals were reconstructed with a bony strut. Group sternoclavicular joint (SCJ) animals were reconstructed with the sternal end of their clavicles. Group costochondral junction (CCJ) animals were reconstructed with costochondral junction of ribs. Standardized lateral cephalometric radiographs with the aid of tantalum bone markers were used to evaluate mandibular growth. Twenty animals were used as controls and were allowed to grow undisturbed for an 18-month period (Group Control). RESULTS: All animals showed good mandibular function and a Class I molar relationship after an 18-month follow-up period. Statistical and graphic comparisons showed no significant difference in mandibular growth among any of the groups. CONCLUSIONS: The results of this investigation suggest that, within the limits of this model, the choice of autograft for condyle replacement may be irrelevant. Copyright 2002 American Association of Oral and Maxillofacial Surgeons J Oral Maxillofac Surg 60:1461-1470, 2002
Authors: Krzysztof Dowgierd; Rafał Pokrowiecki; Małgorzata Kulesa Mrowiecka; Martyna Dowgierd; Jan Woś; Piotr Szymor; Marcin Kozakiewicz; Anna Lipowicz; Małgorzata Roman; Andrzej Myśliwiec Journal: J Clin Med Date: 2022-01-14 Impact factor: 4.241