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.
Orthodontics and Dentofacial Orthopedics
M. Toufic Jeiroudi
Norman S. Carter
Joseph M. Caruso
William J. Emmerson
Timothy B. Welch
Master of Science (MS)
Year Degree Awarded
Date (Title Page)
Library of Congress/MESH Subject Headings
Orthodontics; Jaw -- surgery; Cephalometry
Loma Linda University Libraries
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.
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.
Loma Linda University Electronic Theses and Dissertations
Loma Linda University. Del E. Webb Memorial Library. University Archives