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Application and Curative Effect of Micro-implant Anchorage in Orthodontics
Zhang, Ronghe; Bai, Xueyan; Zhang, Weiwei; Song, Xiaotong; Wang, Chunyan; Gao, Xinxin; Tian, Xubiao & Liu, Fengzhen
Abstract
Purpose: To explore and analyze the curative effects of micro - implant anchorages in orthodontics.
Methods: A retrospective analysis of 65 patients undergoing orthodontic treatment in Department of
Stomatology, Binzhou Medical University Hospital, Shandong, China was carried out. Thirty four cases
in the treatment group were treated with a micro-implant as the anchorage, while 31 cases of the control
group were treated with a palatal bar and facebow as the anchorage, and the curative results of the two
groups were then compared.
Results: After a 13-month treatment, both anchorages were clinically effective, but the micro-implant
anchorage showed higher efficacy. Measurement indices for the test group, including sella-nasion - A
point (SNA) angle (- 1.88 ± 0.71), sella-nasion-B point (SNB) angle (1.39 ± 0.42), A point - nasion - B
point (ANB) angle (- 2.40 ± 0.83), upper central incisor - lower central incisor (U1 - L1) angle (25.79 ±
5.90), upper central incisor - sella - nasion (U1 - SN) angle (- 10.13 ± 3.68), lower central incisor –
mandibular plane (L1 - MP) angle (- 4.22 ± 0.45), upper central incisor - nasion - A point (U1 - NA) angle
(- 1.32 ± 1.35) and lower central incisor - nasion - B point (L1 - NB) angle (- 1.32 ± 1.35) of the test
group were significantly different those of the control group Overbite (OB), overjet (OJ), intercanine
width and the width of the first molars of treatment and control groups were also remarkably). Moreover,
micro-implant was observed to be more stable during treatment.
Conclusion: Compared with traditional anchorages, micro-implants possess the advantages of slighter
trauma, simpler operation, more reliable curative effect and high stability.
Keywords
Micro-implant anchorage; Orthodontics; Facebow anchorage; Oral medicine; Clinical efficacy
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