title: [An 8-year follow-up study of Cerec2 computer aided design and computer aided manufacture of all-ceramic crowns].
abstract: OBJECTIVE
  To evaluate the clinical performance of the crowns made by Cerec2 computer aided design and computer aided manufacture (CAD/CAM) system.
  
  
  METHODS
  Twenty four teeth were restored with Cerec2 CAD/CAM crowns. Eight years after delivery of the prostheses, the all-ceramic crowns were evaluated using modified standard of California Dental Association quality evaluation system. Patients filled out a satisfaction questionnaire at the same time. And Kaplan-Meier analysis was carried out.
  
  
  RESULTS
  Three out of 24 restorations were rated as failure. Kaplan-Meier analysis showed that the success rate of Cerec2 crowns eight year following delivery was 88%.
  
  
  CONCLUSIONS
  Crowns made by Cerec2 CAD/CAM system can survive in oral condition and function well for 8 years.
authors.affiliation: Department of Prosthodontics, College of Stomatology, The Fourth Military Medical University, Xi'an, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Mao
authors.forename: Yuan
authors.initials: Y
authors.lastname: Gao
authors.forename: Zhong-Yi
authors.initials: ZY
authors.lastname: Wang
authors.forename: Bo
authors.initials: B
authors.lastname: Gao
authors.forename: Chu-Fan
authors.initials: CF
authors.lastname: Ma
authors.forename: Shao-Feng
authors.initials: SF
authors.lastname: Zhang
mesh_terms: D000328:Adult; D017076:Computer-Aided Design; D003442:Crowns; D003776:Dental Porcelain; D017267:Dental Prosthesis Design; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D003776:Dental Porcelain