Studies from Peking University in the Area of Implant Esthetic and Reconstructive Dentistry Described (A Novel Computer-Aided Method to Fabricate a Custom One-Piece Glass Fiber Dowel-and-Core Based on Digitized Impression and Crown Preparation ...)
By a News Reporter-Staff News Editor at Health & Medicine Week -- Researchers detail new data in Dentistry. According to news originating from Beijing, People's Republic of China, by NewsRx correspondents, research stated, "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."
Our news journalists obtained a quote from the research from Peking University, "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. 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."
According to the news editors, the research concluded: "This novel computer-aided method to create a custom one-piece glass fiber dowel-and-core proved to be practical and efficient."
For more information on this research see: A Novel Computer-Aided Method to Fabricate a Custom One-Piece Glass Fiber Dowel-and-Core Based on Digitized Impression and Crown Preparation Data. Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry, 2014;23(4):276-283. Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry can be contacted at: Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA (see also Dentistry).
The news correspondents report that additional information may be obtained from Z.Y. Chen, Peking University, Sch & Hosp Stomatol, Dept. of VIP Dental Serv, Beijing 100081, People's Republic of China. Additional authors for this research include Y. Li, X.L. Deng and X.Z. Wang.
Keywords for this news article include: Asia, Beijing, Dentistry, People's Republic of China
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