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Type: Journal article
Title: Comparative evaluation of micro-implant and headgear anchorage used with a pre-adjusted appliance system
Author: Ma, J.
Wang, L.
Zhang, W.
Chen, W.
Zhao, C.
Smales, R.
Citation: European Journal of Orthodontics, 2008; 30(3):283-287
Publisher: Oxford Univ Press
Issue Date: 2008
ISSN: 0141-5387
Statement of
Junqing Ma, Lin Wang, Weibing Zhang, Wenjing Chen, Chunyang Zhao and Roger J. Smales
Abstract: The aim of this study was to compare and evaluate the anchorage effectiveness of using either micro-implants or extraoral headgear with the McLaughlin-Bennett-Trevisi (MBT) system. Thirty young Chinese adults (14 males and 16 females) aged 18-22 years with anterior bimaxillary protrusion were divided randomly into two equal groups, treated with the MBT system anchored by either micro-implants or headgear. Nine measurements obtained before and after treatment from lateral cephalometric radiographs were assessed for the two groups, using the Mann-Whitney U test with alpha = 0.05 for statistical significance. The maxillary incisors in the micro-implant group were significantly more retracted and intruded, while the lower incisors were more lingually inclined, than in the headgear group. The occlusal and mandibular planes were rotated more counterclockwise in the micro-implant group than in the headgear group (P < 0.05). Compared with headgear anchorage, micro-implant anchorage may counteract clockwise rotation of the occlusal and mandibular planes and result in different final positions for the maxillary and mandibular incisors.
Keywords: Mandible; Maxilla; Incisor; Humans; Malocclusion, Angle Class II; Dental Implants; Cephalometry; Treatment Outcome; Dental Implantation, Endosseous; Statistics, Nonparametric; Extraoral Traction Appliances; Orthodontics, Corrective; Rotation; Adolescent; Adult; Female; Male; Orthodontic Anchorage Procedures; Tooth Movement Techniques
RMID: 0020081057
DOI: 10.1093/ejo/cjm128
Appears in Collections:Dentistry publications

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