Double scanning method for computer aided design and computer aided manufacture all-ceramic restorations

VernacularTitle:氧化锆全瓷修复中二次扫描的初步应用
Author: Yi-Hong LIU ¹ ; Hai-Lan FENG ; Hai-Tao WANG ; Lin WANG ; Yu-Guang NIE ; Tao WANG
Author Information

1. 北京大学口腔医学院口腔医院
Keywords: Computer-aided design; Denture,partial,fixed; Double scanning
From: Chinese Journal of Stomatology 2010;45(3):168-171
CountryChina
Language:Chinese
Abstract: Objective To introduce the double scanning for producing computer aided design and computer aided manufacture (CAD-CAM) zirconia crowns,and to compare Procera with Everest CAD-CAM system by observing clinical effects of the crowns.Methods Forty CAD-CAM zirconia crowns (10 crowns by Procera,and 30 crowns by Everest) were evaluated,and the examination criteria included:marginal fit,aesthetics,gingival health,retention,and fracture.All of the zirconia copings were produced using double scanning.Procera system and Everest system use contact scanner and optical scanner respectively. Results The observation time for the crowns ranged from 6 to 24 months.The resulm of clinic evaluation were acceptable in all restorations.Conclusions Double scanning could be used to produce complicated zirconia copings by CAD-CAM in order to get proper symmetrical porcelain length.It Wag easier to make complicated coping with contact scanuer than with optical scanner.