title: The Effect of a Condylar Repositioning Plate on Condylar Position and Relapse in Two-Jaw Surgery.
abstract: BACKGROUND
  Numerous condylar repositioning methods have been reported. However, most of them are 2-dimensional or are complex procedures that require a longer operation time and a highly trained surgeon. This study aims to introduce a new technique using a condylar repositioning plate and a centric relation splint to achieve a centric relationship.
  
  
  METHODS
  We evaluated 387 patients who had undergone surgery for skeletal jaw deformities. During the operation, a centric relation splint, intermediate splint, final centric occlusion splint, and condylar repositioning plate along with an L-type mini-plate for LeFort I osteotomy or a bicortical screw for bilateral sagittal split ramus osteotomy were utilized for rigid fixation. The evaluation included: a physical examination to detect preoperative and postoperative temporomandibular joint dysfunction, 3-dimensional computed tomography and oblique transcranial temporomandibular joint radiography to measure 3-dimensional condylar head movement, and posteroanterior and lateral cephalometric radiography to measure the preoperative and postoperative movement of the bony segment and relapse rate.
  
  
  RESULTS
  A 0.3% relapse rate was observed in the coronal plane, and a 2.8% relapse rate in the sagittal plane, which is indistinguishable from the dental relapse rate in orthodontic treatment. The condylar repositioning plate could not fully prevent movement of the condylar head, but the relapse rate was minimal, implying that the movement of the condylar head was within tolerable limits.
  
  
  CONCLUSIONS
  Our condylar repositioning method using a centric relation splint and mini-plate in orthognathic surgery was found to be simple and effective for patients suffering from skeletal jaw deformities.
authors.affiliation: Department of Plastic and Reconstructive Surgery, Kyungpook National University School of Medicine, Daegu, Korea.
authors.forename: Gyu Sik
authors.initials: GS
authors.lastname: Jung
authors.affiliation: View Plastic Surgery Clinic, Seoul, Korea.
authors.forename: Taek Kyun
authors.initials: TK
authors.lastname: Kim
authors.affiliation: Department of Plastic and Reconstructive Surgery, Kyungpook National University School of Medicine, Daegu, Korea.
authors.forename: Jeong Woo
authors.initials: JW
authors.lastname: Lee
authors.affiliation: Department of Plastic and Reconstructive Surgery, Kyungpook National University School of Medicine, Daegu, Korea.
authors.forename: Jung Dug
authors.initials: JD
authors.lastname: Yang
authors.affiliation: Department of Plastic and Reconstructive Surgery, Kyungpook National University School of Medicine, Daegu, Korea.
authors.forename: Ho Yun
authors.initials: HY
authors.lastname: Chung
authors.affiliation: Department of Plastic and Reconstructive Surgery, Kyungpook National University School of Medicine, Daegu, Korea.
authors.forename: Byung Chae
authors.initials: BC
authors.lastname: Cho
authors.affiliation: Department of Plastic and Reconstructive Surgery, Kyungpook National University School of Medicine, Daegu, Korea.
authors.forename: Kang Young
authors.initials: KY
authors.lastname: Choi
keywords: Le Fort osteotomy; Orthognathic surgery; Sagittal split ramus osteotomy