Abstract
The purpose of this study was to determine the effect of combined orthodontic and orthognathic surgical treatment upon the soft tissue profile, and to determine the correlation between soft tissue response and the following variables: type of surgery, genioplasty, lip thickness, method of surgical site closure, interlabial distance and eversion of the lower lip. Preoperative and long-term postoperative lateral cephalograms were traced for 327 patients (231 females, 96 males) who had been treated with orthognathic surgery (108 Le Fort I, 109 mandibular sagittal split, 110 combined Le Fort I and mandibular sagittal split surgery). The results indicated that strong correlations existed between the hard tissue and soft tissue landmarks in a horizontal direction, poor correlations existed between the hard tissue and soft tissue landmarks in a vertical direction, horizontal movement of the soft tissue chin was greater than previously reported, there was significant uprighting of an everted lower lip following surgery. It was also found that individuals exhibited large variations in response to similar procedures.
LLU Discipline
Orthodontics
Department
Orthodontics and Dentofacial Orthopedics
School
Graduate School
First Advisor
M. Toufic Jeiroudi
Second Advisor
Norman S. Carter
Third Advisor
Joseph M. Caruso
Fourth Advisor
William J. Emmerson
Fifth Advisor
Timothy B. Welch
Degree Name
Master of Science (MS)
Degree Level
M.S.
Year Degree Awarded
1991
Date (Title Page)
6-1991
Language
English
Library of Congress/MESH Subject Headings
Orthodontics; Jaw -- surgery; Cephalometry
Type
Thesis
Page Count
iv; 43
Digital Format
Digital Publisher
Loma Linda University Libraries
Copyright
Author
Usage Rights
This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights.
Recommended Citation
Brown, Douglas M., "Cephalometric Analysis of Soft Tissue Profile Change Associated with Orthodontics and Orthognathic Surgery : A Long-Term Study" (1991). Loma Linda University Electronic Theses, Dissertations & Projects. 1234.
https://scholarsrepository.llu.edu/etd/1234
Collection
Loma Linda University Electronic Theses and Dissertations
Collection Website
http://scholarsrepository.llu.edu/etd/
Repository
Loma Linda University. Del E. Webb Memorial Library. University Archives