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学科主题: 口腔医学
题名:
Accuracy of Digital Impressions and Fitness of Single Crowns Based on Digital Impressions
作者: Yang, Xin1; Lv, Pin1; Liu, Yihong2; Si, Wenjie3; Feng, Hailan1
关键词: digital impressions ; accuracy ; fitness
刊名: MATERIALS
发表日期: 2015-07-01
DOI: 10.3390/ma8073945
卷: 8, 期:7, 页:3945-3957
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Materials Science, Multidisciplinary
研究领域[WOS]: Materials Science
关键词[WOS]: ALL-CERAMIC CROWNS ; IN-VITRO ; DIMENSIONAL STABILITY ; DENTAL IMPRESSIONS ; CLINICAL-EVALUATION ; MARGINAL FIT ; PRECISION ; CEMENTATION ; TECHNOLOGY ; ADAPTATION
英文摘要:

In this study, the accuracy (precision and trueness) of digital impressions and the fitness of single crowns manufactured based on digital impressions were evaluated. #14-17 epoxy resin dentitions were made, while full-crown preparations of extracted natural teeth were embedded at #16. (1) To assess precision, deviations among repeated scan models made by intraoral scanner TRIOS and MHT and model scanner D700 and inEos were calculated through best-fit algorithm and three-dimensional (3D) comparison. Root mean square (RMS) and color-coded difference images were offered. (2) To assess trueness, micro computed tomography (micro-CT) was used to get the reference model (REF). Deviations between REF and repeated scan models (from (1)) were calculated. (3) To assess fitness, single crowns were manufactured based on TRIOS, MHT, D700 and inEos scan models. The adhesive gaps were evaluated under stereomicroscope after cross-sectioned. Digital impressions showed lower precision and better trueness. Except for MHT, the means of RMS for precision were lower than 10 m. Digital impressions showed better internal fitness. Fitness of single crowns based on digital impressions was up to clinical standard. Digital impressions could be an alternative method for single crowns manufacturing.

语种: 英语
所属项目编号: 512111179
项目资助者: National Natural Science Foundation of China
WOS记录号: WOS:000359898300011
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/63202
Appears in Collections:北京大学口腔医学院_口腔修复科_期刊论文

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作者单位: 1.Peking Univ, Dept Prosthodont, Sch & Hosp Stomatol, Beijing 100081, Peoples R China
2.Peking Univ, Dept Gen Dent, Sch & Hosp Stomatol, Beijing 100081, Peoples R China
3.Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

Recommended Citation:
Yang, Xin,Lv, Pin,Liu, Yihong,et al. Accuracy of Digital Impressions and Fitness of Single Crowns Based on Digital Impressions[J]. MATERIALS,2015,8(7):3945-3957.
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