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学科主题: 口腔医学
题名:
A Novel Computer-Aided Method to Fabricate a Custom One-Piece Glass Fiber Dowel-and-Core Based on Digitized Impression and Crown Preparation Data
作者: Chen, Zhiyu1; Li, Ya2; Deng, Xuliang3; Wang, Xinzhi1
关键词: CAD ; CAM technique ; optical 3D digitization ; sectional dual-arch impression
刊名: JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY
发表日期: 2014-06-01
DOI: 10.1111/jopr.12102
卷: 23, 期:4, 页:276-283
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]: ENDODONTICALLY TREATED TEETH ; HUMAN ROOT DENTIN ; CLINICAL-TRIAL ; CERAMIC POST ; ARCH ; RESTORATION ; COMPOSITES ; DIMENSIONS ; PREMOLARS ; THICKNESS
英文摘要:

Purpose Fiber-reinforced composite dowels have been widely used for their superior biomechanical properties; however, their preformed shape cannot fit irregularly shaped root canals. This study aimed to describe a novel computer-aided method to create a custom-made one-piece dowel-and-core based on the digitization of impressions and clinical standard crown preparations. Materials and Methods A standard maxillary die stone model containing three prepared teeth each (maxillary lateral incisor, canine, premolar) requiring dowel restorations was made. It was then mounted on an average value articulator with the mandibular stone model to simulate natural occlusion. Impressions for each tooth were obtained using vinylpolysiloxane with a sectional dual-arch tray and digitized with an optical scanner. The dowel-and-core virtual model was created by slicing 3D dowel data from impression digitization with core data selected from a standard crown preparation database of 107 records collected from clinics and digitized. The position of the chosen digital core was manually regulated to coordinate with the adjacent teeth to fulfill the crown restorative requirements. Based on virtual models, one-piece custom dowel-and-cores for three experimental teeth were milled from a glass fiber block with computer-aided manufacturing techniques. Furthermore, two patients were treated to evaluate the practicality of this new method. Results The one-piece glass fiber dowel-and-core made for experimental teeth fulfilled the clinical requirements for dowel restorations. Moreover, two patients were treated to validate the technique. Conclusion This novel computer-aided method to create a custom one-piece glass fiber dowel-and-core proved to be practical and efficient.

语种: 英语
所属项目编号: 20090001110099
项目资助者: Research Fund for the Doctoral Program of Higher Education of China
WOS记录号: WOS:000337635000003
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/62327
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, Sch & Hosp Stomatol, Dept Prosthodont, Beijing 100081, Peoples R China
2.First Hosp Shijiazhuang City, Dept Dent, Shijiazhuang, Hebei, Peoples R China
3.Peking Univ, Sch & Hosp Stomatol, Dept VIP Dent Serv, Beijing 100081, Peoples R China

Recommended Citation:
Chen, Zhiyu,Li, Ya,Deng, Xuliang,et al. A Novel Computer-Aided Method to Fabricate a Custom One-Piece Glass Fiber Dowel-and-Core Based on Digitized Impression and Crown Preparation Data[J]. JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY,2014,23(4):276-283.
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