title: [Evaluation of short-term clinical therapeutic efficiency of computer aided design and manufacturing titanium-ceramic-fixed partial dentures for implant-supported restoration in posterior region].
abstract: OBJECTIVE
  To evaluate the clinical results of computer aided design and computer aided manufacturing (CAD/CAM) titanium-ceramic-fixed partial dentures for implant-supported restoration in posterior region.
  
  
  METHODS
  In the study, 90 patients (47 males, 43 females, and the mean age of 48.7 years ranging from 30-62 years) with posterior tooth missing underwent implant-supported porcelain fuse mental prostheses with CAD/CAM titanium-base. A total of 135 prostheses (159 prosthetic units) were fabricated, and 152 implants were placed. The evaluators examined the integrity of restoration, gingival health, color match and marginal adaptation. The mean follow-up time was 51.9 months (24-80 months).
  
  
  RESULTS
  No implant was lost during the loading time. All the patients were satisfied at the end of their treatment. The chipping rate of porcelain fuse mental prostheses with CAD/CAM titanium-base was 13.2%(21/159 prosthetic units), No fracture of titanium-base was observed, and 7.4% (10/135) prostheses were found loosening. The authors rated 97.8% (132/135) prosthesis as good or better in regard to color match, 100% (152/152) implants had excellent marginal adaptation.
  
  
  CONCLUSIONS
  The implant-supported titanium-based porcelain fuse mental prostheses with CAD/CAM show good marginal integrity and shade stability, with a clinically acceptable chipping rate, and these restorations can achieve success in the case of posterior tooth missing. Further study is needed to determine the long-term results.
authors.affiliation: Second Clinical Division, Peking University School and Hospital of Stomatology, Beijing 100101, China.
authors.forename: Min-Jie
authors.initials: MJ
authors.lastname: Wu
authors.forename: Li-Dong
authors.initials: LD
authors.lastname: Zou
authors.forename: Wei-Hua
authors.initials: WH
authors.lastname: Xu
authors.forename: Xiang-Hao
authors.initials: XH
authors.lastname: Zhang
mesh_terms: D000328:Adult; D002516:Ceramics / Q000737:chemistry*; D017076:Computer-Aided Design; D019094:Dental Prosthesis, Implant-Supported; D003779:Denture Design; D003830:Denture, Partial, Fixed; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation; D008297:Male; D016876:Metal Ceramic Alloys; D008875:Middle Aged; D008963:Molar; D017060:Patient Satisfaction; D014025:Titanium / Q000737:chemistry*
chemical_list: D016876:Metal Ceramic Alloys; D014025:Titanium