A systematic review of the survival and complication rates of fixed partial dentures (FPDs) after an observation period of at least 5 years. II. Combined tooth-implant-supported FPDs. Lang NP, Pjetursson BE, Tan K, Brägger U, Egger M, Zwahlen M. Clin Oral Implants Res 2004;15:643-53. Hans-Peter Weber, DMD, Dr.med.dent, Yvette Zimering, DMD Student To compare tooth-implant-supported fixed partial dentures with implant-supported FPDs for implant survival, FPD survival, and biological or technical complications. Clinical Research Foundation (CRF) for the Promotion of Oral Health, University of Berne, Switzerland. Systematic review with meta-analysis of data. Level 2: Limited-quality, patient-oriented evidence. B: Inconsistent or limited-quality patient-oriented evidence.