Document Detail

Late growth period orthopedic therapy versus bimaxillary surgery for correction of skeletal class III.
MedLine Citation:
PMID:  20485039     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To compare the effects of late orthopedic therapy with orthognathic surgery in skeletal class III cases. MATERIALS AND METHODS: The subjects of the study were divided into 2 groups. Group 1 comprised 15 patients (8 females and 7 males) with a mean age of 14 years 6 months (range, 12 y 10 mo to 15 y 6 mo) and treated with maxillary expansion and a modified maxillary protraction appliance (MMPA). Group 2 comprised 11 patients (6 females and 5 males) treated with bimaxillary surgery (BMS) with a mean age of 23 years (range, 18 y 2 mo to 28 y 4 mo). Lateral cephalometric films were taken before (T1) and after orthopedic therapy (T2) in the MMPA group and before surgery (T1) and after fixed orthodontic therapy (T2) in the BMS group. Study groups were compared by analysis of variance and Tukey tests at the beginning and at the end of the treatment. RESULTS: Maxillary forward displacement (P < 0.01) and the increase in ANS-Me distance (P < 0.05) were higher in the BMS group than in the MMPA group. The mandible exhibited significant posterior rotation in MMPA group (P < 0.01). Mandibular effective length decreased in the BMS group and increased in the MMPA group. Soft tissue profile (G-Sn-Pg) improved in both groups (P < 0.05) and labiomental angle reduced in the BMS group, whereas an increase was observed in the MMPA group. CONCLUSIONS: Orthognatic surgery can be more effective in patients with increased mandibular length, more anteriorly positioned mandibles, and increased vertical dimensions.
Hatice Gokalp; Volkan Güney; Gokmen Kurt
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The Journal of craniofacial surgery     Volume:  21     ISSN:  1536-3732     ISO Abbreviation:  J Craniofac Surg     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-20     Completed Date:  2010-09-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9010410     Medline TA:  J Craniofac Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  741-7     Citation Subset:  D    
Department of Orthodontics, Faculty of Dentistry, Ankara University, Ankara, Turkey.
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MeSH Terms
Analysis of Variance
Malocclusion, Angle Class III / radiography,  surgery*,  therapy*
Maxilla / growth & development,  radiography,  surgery*
Osteotomy / methods
Palatal Expansion Technique
Treatment Outcome
Vertical Dimension

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

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