484 416

Cited 0 times in

하악골 전돌증환자의 구내 하악골상행지 수직골절단술후 이하두정 계측방사선사진상에서의 근심골편의 형태 및 위치 변화

Other Titles
 Morphologic and positional change of the proximal segments after intraoralvertical ramus osteotomy of the mandibular prognathism on submentovertex cephalogram 
Authors
 정재형  ;  박형식  ;  황충주 
Citation
 Journal of the Korean Association of Oral and Maxillofacial Surgeons (대한구강악안면외과학회지), Vol.29(1) : 26-34, 2003 
Journal Title
Journal of the Korean Association of Oral and Maxillofacial Surgeons(대한구강악안면외과학회지)
ISSN
 1225-1585 
Issue Date
2003
MeSH
Mandibular prognathism ; Intraoral Vertical Ramus Osteotomy ; Submentovertex Cephalogram ; Proximal segment ; Condylar head
Keywords
Mandibular prognathism ; Intraoral Vertical Ramus Osteotomy ; Submentovertex Cephalogram ; Proximal segment ; Condylar head
Abstract
Intraoral Vertical Ramus Osteotomy,along with Sagittal Split Ramus Osteotomy,is an popular surgical technique performed on mandibular prognathism. However Intraoral Vertical Ramus Osteotomy has been suspected for an initial mobilization at the healing phase of segment because it does not employ the rigid fixation between segments. To execute a study on the healing phase of segment after Intraoral Vertical Ramus Osteotomy on the horizontal plane, 102 patients (204 parts) who were diagnosed mandibular prognathism and took Intraoral Vertical Ramus Osteotomy at the Yonsei University dental hospital were observed during the period of before operation, immediately postoperation, 1 month, 3 months, 6 months, and 12 months. The change in the width of segment and horizontal angle of proximal segment and condylar head on the Submentovertex Cephalogram taken from those patients represented following results.
1. The width of proximal and distal segment decreased with the lapse of time. It decreased into 84.5% between immediate postoperative and 6M and even continued to decrease till 12M.
2. The horizontal angle of the proximal segment did medial rotation according as the lapse of time and rigorously continued till 3M. The rotation angle of condylar head indicated its tendency of recurrence to the original position but the entire recurrence was not allowed. The bigger an initial angle was, the higher was the tendency of recurrence after the operation while the rotation angle remained still bigger.
3. After grouping into group 1, group 2,and group 3 based on the extent of the variation of rotation angle of condylar head at immediate postoperative, the variation of rotation angle was measures in each group. The result presented that the initial rotation angle of condylar head had correlation with that of proximal segment but had no relation with the extent of setback of the mandible.
However a quantitative analysis alone is not a sufficient method for analyzing the healing phase of segment on the horizontal plane.Therefore a multilateral analysis using 3 dimensional data such as CT is recommendable for the future study.
Files in This Item:
T200305198.pdf Download
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Hwang, Chung Ju(황충주) ORCID logo https://orcid.org/0000-0003-3024-4551
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/114040
사서에게 알리기
  feedback

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse

Links