Document Detail

Cephalometric evaluation of surgical mandibular advancement.
MedLine Citation:
PMID:  20658038     Owner:  NLM     Status:  MEDLINE    
The treatment of Class II adult individuals with mandibular deficiency has been the combination of orthodontic treatment and orthognathic surgery. Therefore, a study was conducted in which cephalometric analysis was used to evaluate the influence of dentoalveolar decompensation in Class II patients submitted to orthodontic and surgical treatment for mandibular advancement, by bilateral osteotomy of the mandibular ramus. A sample of 15 leukoderma adult female patients were selected and three cephalometric radiographs of each patient, taken before the orthodontic treatment, before surgery and after at least 6 months postoperatively, were analyzed in a total of 45 roentgenograms. The tracings were made by the manual method and the points were digitalized using software. The results showed that values of SNB increased from 75.6 to 78.6 degrees. The measures BNP and PGNP were reduced from -12.7 to -7.7 mm and -12.7 to -6.6 mm, respectively. For ANB there was a reduction of 3.23 degrees (from 8.1 degrees to 4.9 degrees). Likewise, the values of AOBO were diminished by 6.3 mm (from 7.6 to 1.3 mm), and in the values of OJ there was a reduction of 5.7 mm (from 9 to 3.3 mm). It was concluded that the pre-surgical orthodontic treatment promoted minimal and variable dental and skeletal changes in the final result. The surgical treatment caused significant skeletal changes, especially in the measurements related to the mandible (SNB, BNP, PGNP and SNPM) or indirectly to it (ANB, AOBO and OJ).
Eloísa Marcantônio Boeck; Mayury Kuramae; Nádia Lunardi; Ary dos Santos-Pinto; Renato Mazzonetto
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Brazilian oral research     Volume:  24     ISSN:  1807-3107     ISO Abbreviation:  Braz Oral Res     Publication Date:    2010 Apr-Jun
Date Detail:
Created Date:  2010-07-26     Completed Date:  2010-12-13     Revised Date:  2011-04-06    
Medline Journal Info:
Nlm Unique ID:  101307187     Medline TA:  Braz Oral Res     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  189-96     Citation Subset:  D; IM    
Department of Orthodontics, Hermínio Ometto University Center, Araras University, Araras, SP, Brazil.
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MeSH Terms
Analysis of Variance
Image Processing, Computer-Assisted
Linear Models
Malocclusion, Angle Class II / radiography,  therapy*
Mandible / anatomy & histology,  radiography,  surgery*
Mandibular Advancement / methods*
Orthodontics / methods
Orthognathic Surgical Procedures
Retrognathism / radiography,  therapy*
Treatment Outcome

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

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