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学科主题: 口腔医学
题名:
Intrusion of overerupted maxillary molars with miniscrew implant anchorage: A radiographic evaluation
作者: Xun, Chun-lei1; Zhao, Hong3; Zeng, Xiang-long1; Wang, Xing2
关键词: overerupted molar ; miniscrew implant anchorage ; molar intrusion
刊名: JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY-MEDICAL SCIENCES
发表日期: 2013-10-01
DOI: 10.1007/s11596-013-1197-5
卷: 33, 期:5, 页:780-785
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Biochemistry & Molecular Biology
研究领域[WOS]: Biochemistry & Molecular Biology
关键词[WOS]: ANTERIOR OPEN-BITE ; TITANIUM MINIPLATE ANCHORAGE ; APICAL ROOT RESORPTION ; SKELETAL ANCHORAGE ; ZYGOMATIC ANCHORAGE ; MINI-IMPLANTS ; SYSTEM ; ORTHODONTICS ; TEETH ; DOGS
英文摘要:

The aim of this retrospective study was to quantitatively evaluate the treatment effects of intrusion of overerupted maxillary molars using miniscrew implant anchorage and to investigate the apical root resorption after molar intrusion. The subjects included 30 patients whose average ages were 35.5 +/- 9.0 years. All patients had received intrusion treatments for overerupted maxillary molars with miniscrew anchorage. There were 38 maxillary first molars and 26 maxillary second molars to be intruded. Two miniscrews were inserted in the buccal and palatal alveolar bone mesial to the overerupted molar. Force of 100-150 g was applied by the elastic chains between screw head and attachment on each side. Lateral cephalograms and panoramic radiographs taken before and after intrusion were used to evaluate dental changes and root resorption of molars. Only 6 of the 128 miniscrews failed. The first and second molars were significantly intruded by averages of 3.4 mm and 3.1 mm respectively (P < 0.001). The average intrusion time was more than 6 months. The crown of the molars mesially tilted by averages of 3.1 degrees and 3.3 degrees (P < 0.001) for first and second molars. The amounts of root resorption were 0.2-0.4 mm on average. The intrusion treatment of overerupted molars with miniscrew anchorages could be used as an efficient and reliable method to recover lost restoration space for prosthesis. Radiographically speaking, root resorption of molars was not clinically significant after application of intrusive forces of 200 to 300 g.

语种: 英语
WOS记录号: WOS:000325817500030
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/51617
Appears in Collections:北京大学口腔医学院_牙周科_期刊论文

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作者单位: 1.Peking Univ, Sch & Hosp Stomatol, Dept Orthodont, Beijing 100081, Peoples R China
2.Peking Univ, Sch & Hosp Stomatol, Dept Oral & Maxillofacial Surg, Beijing 100081, Peoples R China
3.Chinese Peoples Armed Police Forces, Gen Hosp, Ctr Stomatol, Beijing 100039, Peoples R China

Recommended Citation:
Xun, Chun-lei,Zhao, Hong,Zeng, Xiang-long,et al. Intrusion of overerupted maxillary molars with miniscrew implant anchorage: A radiographic evaluation[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY-MEDICAL SCIENCES,2013,33(5):780-785.
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