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学科主题: 口腔医学
题名:
Stable region for maxillary dental cast superimposition in adults, studied with the aid of stable miniscrews
作者: Chen, G.1,2; Chen, S.1,2; Zhang, X. Y.1,2; Jiang, R. P.1,2; Liu, Y.1,2; Shi, F. H.3; Xu, T. M.1,2
关键词: dental models ; miniscrew ; palate ; stable region ; superimposition
刊名: ORTHODONTICS & CRANIOFACIAL RESEARCH
发表日期: 2011-05-01
DOI: 10.1111/j.1601-6343.2011.01510.x
卷: 14, 期:2, 页:70-79
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Dentistry, Oral Surgery & Medicine
研究领域[WOS]: Dentistry, Oral Surgery & Medicine
关键词[WOS]: HEAD FILM MEASUREMENTS ; 3-DIMENSIONAL TOOTH MOVEMENT ; SURFACE LASER SCANNER ; PALATAL RUGAE ; ORTHODONTIC MEASUREMENTS ; RELIABILITY ; MODELS ; EXTRACTION ; LANDMARKS ; STABILITY
英文摘要:

Structured Abstract

Authors -

Chen G, Chen S, Zhang XY, Jiang RP, Liu Y, Shi FH, Xu TM

Objectives -

To identify a stable and reproducible reference region to superimpose serial maxillary dental models in adult extraction cases.

Setting and Sample Population -

Fifteen adult volunteers were enrolled.

Methods -

To reduce protrusion, bilateral maxillary first premolars were extracted in all volunteers. Each volunteer received six miniscrews, including two loaded miniscrews used to retract anterior teeth and four unloaded miniscrews. Impressions for maxillary models were taken at T1 (1 week after miniscrew placement) and T2 (17 months later). Dental models were created and then scanned using a laser scanner. Stability of the miniscrews was evaluated, and dental models were registered using stationary miniscrews. The palatal region, where deviation was within 0.5 mm in all subjects, was determined to be the stable region. Reproducibility of the new palatal region for 3D digital model superimposition was evaluated.

Results -

Deviation of the medial 2/3 of the palatal region between the third rugae and the line in contact with the distal surface of the bilateral maxillary first molars was within 0.5 mm. Tooth movement of 15 subjects was measured to evaluate the validity of the new 3D superimposition method. Displacements were 8.18 +/- 2.94 mm (central incisor) and 2.25 +/- 0.73 mm (first molar) measured by miniscrew superimposition, while values of 7.81 +/- 2.53 mm (central incisor) and 2.29 +/- 1.03 mm (first molar) were measured using the 3D palatal vault regional superimposition method; no significant difference was observed.

Conclusion -

The medial 2/3 of the third rugae and the regional palatal vault dorsal to it is a stable region to register 3D digital models for evaluation of orthodontic tooth movement in adult patients.

语种: 英语
所属项目编号: 2009AA01Z312
项目资助者: Foundation of High Technology Research and Development Plan of China
WOS记录号: WOS:000289158500004
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/51090
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, Dept Orthodont, Sch Stomatol, Beijing 100081, Peoples R China
2.Peking Univ, Dept Orthodont, Hosp Stomatol, Beijing 100081, Peoples R China
3.Peking Univ, Key Lab Machine Percept, MOE, Beijing 100081, Peoples R China

Recommended Citation:
Chen, G.,Chen, S.,Zhang, X. Y.,et al. Stable region for maxillary dental cast superimposition in adults, studied with the aid of stable miniscrews[J]. ORTHODONTICS & CRANIOFACIAL RESEARCH,2011,14(2):70-79.
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