Metal-ceramic-fixed dental prosthesis with CAD/CAM-fabricated substructures: 6-year clinical results.
OBJECTIVE
The aim of this study was to evaluate the clinical performance of fixed dental prostheses (FDPs) with computer-aided design (CAD)/computer-aided manufacturing (CAM)-fabricated titanium substructures veneered with low-fusing porcelain after 6 years.


METHODS
Thirty-one FDPs for 23 patients were fabricated. The frameworks were designed and milled using an early version of a dental CAD/CAM system. Checkups were performed annually.


RESULTS
Complications totaled ten porcelain fractures, one substructure fracture, and one biologic failure. The success rate was calculated at 58.6 % and the survival rate at 88 % (Kaplan-Meier analysis).


CONCLUSIONS
The clinical performance of the described technique for FDPs with titanium substructures was poor. Therefore, the presented concept cannot be recommended.


CONCLUSIONS
CAD/CAM-fabricated titanium substructures veneered with the powder build-up technique showed poor clinical outcome after 6 years.
Department of Prosthetic Dentistry, University School of Dental Medicine, Martin-Luther University, Große Steinstrasse 19, Halle, Germany. jeremias.hey@medizin.uni-halle.de
Jeremias
J
Hey
Florian
F
Beuer
Tobias
T
Bensel
Arne F
AF
Boeckler
D000328:Adult; D000368:Aged; D017076:Computer-Aided Design; D003343:Corrosion; D003776:Dental Porcelain; D019232:Dental Restoration Failure; D003801:Dental Veneers; D003779:Denture Design; D003830:Denture, Partial, Fixed; D005260:Female; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D018709:Statistics, Nonparametric; D013814:Thermal Conductivity; D014025:Titanium / Q000737:chemistry*; D044366:Transition Temperature; D016896:Treatment Outcome
D003776:Dental Porcelain; D014025:Titanium