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学科主题: 口腔医学
题名:
Factors Predisposing to Maxillary Anchorage Loss: A Retrospective Study of 1403 Cases
作者: Su, Hong1; Han, Bing1; Li, Sa2; Na, Bin3; Ma, Wen3; Xu, Tian-Min1
刊名: PLOS ONE
发表日期: 2014-10-09
DOI: 10.1371/journal.pone.0109561
卷: 9, 期:10
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
关键词[WOS]: HEAD FILM MEASUREMENTS ; CLASS-II MALOCCLUSION ; PREMOLAR EXTRACTIONS ; ORTHODONTIC TREATMENT ; DIFFERENTIAL MOMENTS ; SKELETAL ANCHORAGE ; TREATMENT OUTCOMES ; TOOTH MOVEMENT ; IMPLANT ; RELIABILITY
英文摘要:

Anchorage loss is very disturbing for orthodontists and patients during orthodontic treatment, which usually results in bad treatment effects. Despite the same treatment strategy, different patients show different tendencies toward anchorage loss, which influences the treatment results and should preferably be predicted before the treatment is begun. However, relatively little research has been conducted on which patients are more likely to lose anchorage. The mesial tipping of the first molar marks the onset of anchorage loss, and changes in the angulation of the first molar are closely related to anchorage loss. This cross-sectional study aimed to determine how the mesiodistal angulation of the upper first molars changes during general orthodontic treatment and to identify the individual physiologic factors leading to these changes in a large sample of 1403 patients with malocclusion. The data indicate that the upper first molars tend to be tipped mesially during orthodontic treatment, and this constitutes a type of anchorage loss that orthodontists should consider carefully. Compared to treatment-related factors, patients′ physiologic characteristics have a greater influence on changes in the angulation of the upper first molars during orthodontic treatment. The more distally tipped the upper first molars are before treatment, the more they will tip mesially during treatment. Mesial tipping of the upper first molars, and therefore, anchorage loss, is more likely to occur in adolescents, males, patients with class II malocclusion and patients who have undergone maxillary premolar extraction. This finding is of clinical significance to orthodontists who wish to prevent iatrogenic anchorage loss by tipping originally distally tipped upper molars forward, and provides a new perspective on anchorage during orthodontic treatment planning.

语种: 英语
所属项目编号: NSFC81371192 ; Z141107002514054
项目资助者: National Natural Science Foundation of China ; Beijing Municipal Science &amp ; Technology Commission
WOS记录号: WOS:000343941200059
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/53379
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 100871, Peoples R China
2.Shenzhen Peoples Hosp, Dept Stomatol, Shenzhen, Peoples R China
3.Peking Univ, Sch & Hosp Stomatol, Beijing 100871, Peoples R China

Recommended Citation:
Su, Hong,Han, Bing,Li, Sa,et al. Factors Predisposing to Maxillary Anchorage Loss: A Retrospective Study of 1403 Cases[J]. PLOS ONE,2014,9(10).
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