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Differences between sliding mechanics with implant anchorage and straight-pull headgear and intermaxillary elastics in adults with bimaxillary protrusion.
MedLine Citation:
PMID:  21059875     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The aim of this retrospective study was to determine differences between the outcomes of treatment using implant anchorage compared with straight-pull headgear and intermaxillary elastics in bimaxillary protrusion patients. The lateral cephalograms of 28 adult orthodontic patients (3 males and 25 females; age, 24.9 ± 5.0 years) who had an Angle Class I malocclusion with bimaxillary protrusion were selected. Group 1 (14 patients; 1 male and 13 females; age, 25.0 ± 5.1 years) received sliding mechanics with implant anchorage and group 2 (14 patients; 2 males and 12 females; age, 24.8 ± 5.1 years) a straight-pull headgear and intermaxillary elastics. Lateral cephalometric radiographs obtained before and after treatment were traced, 13 landmarks identified, and differences in the skeletal and dental changes compared between the groups. Wilcoxon's signed-rank test was used to determine changes within the treatment groups and a Mann-Whitney U-test to evaluate significant differences. More anchorage loss occurred at the maxillary posterior teeth in group 2 (2.1 mm) than in group 1 (0.1 mm). Closing rotation of the mandible occurred in group 1, while opening rotation of the mandible was observed in group 2. These results suggest that sliding mechanics with implant anchorage may provide absolute anchorage and could control mandibular rotation more than the conventional technique.
Authors:
Isao Koyama; Shoichiro Iino; Yuka Abe; Teruko Takano-Yamamoto; Shouichi Miyawaki
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Publication Detail:
Type:  Journal Article     Date:  2010-11-08
Journal Detail:
Title:  European journal of orthodontics     Volume:  33     ISSN:  1460-2210     ISO Abbreviation:  Eur J Orthod     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-03-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7909010     Medline TA:  Eur J Orthod     Country:  England    
Other Details:
Languages:  eng     Pagination:  126-31     Citation Subset:  D; IM    
Affiliation:
Koyama Orthodontic Dental Office, Osaka.
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