title: Tooth-implant-supported posterior fixed dental prostheses with zirconia frameworks: 3-year clinical result.
abstract: OBJECTIVE
  This case series compared the clinical survival of tooth-implant-supported (TI-S) and tooth-supported (T-S) three-unit fixed dental prostheses (FDPs) with zirconia frameworks and described the incidence of biological and technical complications.
  
  
  METHODS
  Forty-four patients received 27 TI-S FDPs and 22 T-S FDPs. Twenty-seven titanium screw implants were inserted at the dislodged position of two missing posterior teeth. All implants were provided with customized zirconia abutments. Zirconia frameworks were fabricated by a CAD/CAM system and veneered in powder build-up technique. All restorations were cemented with glass ionomer. Baseline evaluation was performed 2 weeks after cementation with recall examinations performed at 6, 12, 24 and 36 months by calibrated investigators. Survival probabilities according to Kaplan-Meier were calculated. Gingival parameters and bone loss were assessed and statistically evaluated.
  
  
  RESULTS
  The mean service time of the FDPs was 35 months (±6). Two technical complications (fracture of veneering porcelain) were observed. One biological complication was recorded. The Kaplan-Meier survival probability was 93.9 % for all types of complications and 100 % related to restorations in service. The type of abutment support (TI-S vs. T-S) had no significant influence on the survival probability (p = 0.412, log rank test). No difference of the gingival parameters was detected between implants and natural teeth.
  
  
  CONCLUSIONS
  Tooth-implant-supported zirconia-based FDPs showed similar clinical performance compared to tooth-supported zirconia-based FDPs.
  
  
  CONCLUSIONS
  Within the limitations of this case series, tooth-implant-supported FDPs with zirconia frameworks seem to be a reliable treatment option.
authors.affiliation: Department of Prosthodontics, Munich Dental School, Goethestr. 70, 80336, Munich, Germany. florian.beuer@charite.de.|Department of Prosthodontics, Charité University Medicine Berlin, Charité Center 03, Assmannshauser Str. 4-6, 14197, Berlin, Germany. florian.beuer@charite.de.
authors.forename: Florian
authors.initials: F
authors.lastname: Beuer
authors.affiliation: Department of Prosthodontics, Munich Dental School, Goethestr. 70, 80336, Munich, Germany.
authors.forename: Caroline
authors.initials: C
authors.lastname: Sachs
authors.affiliation: Department of Prosthodontics, Munich Dental School, Goethestr. 70, 80336, Munich, Germany.
authors.forename: Julian
authors.initials: J
authors.lastname: Groesser
authors.affiliation: Department of Prosthodontics, Munich Dental School, Goethestr. 70, 80336, Munich, Germany.
authors.forename: Jan-Frederik
authors.initials: JF
authors.lastname: Gueth
authors.affiliation: , Josef-Heilingbrunner-Str. 2, 93413, Cham, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Stimmelmayr
mesh_terms: D000368:Aged; D001863:Bone Screws; D017076:Computer-Aided Design; D000044:Dental Abutments; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D003830:Denture, Partial, Fixed; D005260:Female; D005899:Glass Ionomer Cements; D006801:Humans; D008297:Male; D008875:Middle Aged; D014025:Titanium; D015040:Zirconium
chemical_list: D015921:Dental Implants; D005899:Glass Ionomer Cements; D015040:Zirconium; D014025:Titanium; C028541:zirconium oxide
keywords: All-ceramic abutment; Fixed dental prostheses; Tooth-implant-supported prosthodontics; Zirconia