Document Detail

Factors influencing the predictability of soft tissue profile changes following mandibular setback surgery.
MedLine Citation:
PMID:  11407775     Owner:  NLM     Status:  MEDLINE    
The objective of this cephalometric study was to assess long-term changes in the soft tissue profile following mandibular setback surgery and investigate the presence of factors that may influence the soft tissue response to skeletal repositioning. The subjects enrolled were 80 consecutive mandibular prognathism patients operated with bilateral sagittal split osteotomy and rigid fixation. Lateral cephalograms were taken at 6 occasions: immediate presurgical, immediate postsurgical, 2 and 6 months postsurgical, and 1 and 3 years postsurgical. The subjects were grouped according to gender and magnitude of setback. Ratios of soft tissue to hard tissue movements were calculated for the subgroups. Females generally demonstrated greater ratios than males with a statistically significant difference for the upper lip and chin (P < .05). Postsurgical alterations in the profiles were more predictable in patients with larger setbacks compared to patients with smaller ones. Skeletal relapse had a profound influence on long-term profile changes. Based on these findings, it is proposed that the database used in prediction software be adjusted to account for such factors in an attempt to improve the accuracy of computerized treatment simulations.
K A Mobarak; O Krogstad; L Espeland; T Lyberg
Related Documents :
24106645 - Stochastic resonance whole-body vibration, musculoskeletal symptoms, and body balance: ...
24915175 - Preventive effects of 10-day supplementation with saffron and indomethacin on the delay...
10982935 - Effect of unilateral posterior crossbite on the electromyographic activity of human mas...
2623105 - Character structure and performance on the mmpi.
12771165 - Repeated bouts of high-intensity exercise and muscle glycogen sparing in the rat.
20351575 - Effects of lifting tempo on one repetition maximum and hormonal responses to a bench pr...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Angle orthodontist     Volume:  71     ISSN:  0003-3219     ISO Abbreviation:  Angle Orthod     Publication Date:  2001 Jun 
Date Detail:
Created Date:  2001-06-15     Completed Date:  2001-10-18     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0370550     Medline TA:  Angle Orthod     Country:  United States    
Other Details:
Languages:  eng     Pagination:  216-27     Citation Subset:  D; IM    
Department of Orthodontics, University of Oslo, Norway.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Analysis of Variance
Chin / anatomy & histology
Face / anatomy & histology*
Lip / anatomy & histology
Malocclusion, Angle Class III / surgery*
Mandible / abnormalities,  surgery*
Prognathism / surgery*
Sex Factors
Statistics, Nonparametric

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Measurements of mandibular length: a comparison of articulare vs condylion.
Next Document:  Severe dental open bite malocclusion with tongue reduction after orthodontic treatment.