CEMENTED SINGLE CROWNS ON OSSEOINTEGRATED IMPLANTS AFTER 5 YEARS - RESULTS FROM A PROSPECTIVE-STUDY ON CERAONE

Purpose: The aim of this prospective study was to present the results after 5 years of loading of 65 CeraOne (Nobel Biocare) crowns. Materia ls and Methods: Sixty-two implants in the maxilla and implants in the mandible were placed in 57 patients. Sixty-two all-ceramic and three m etal-ceramic crowns were cemented. The group comprised the first patie nts treated with the CeraOne prosthodontic concept. Results: Eight pat ients did not complete the study. Only one implant failed, giving a cu mulative success rate for implants of 98.5%. The failed implant was re placed: a crown was cemented and then followed for 5 years without any complications. Four crowns were recorded as failures, giving a cumula tive success rate for crowns of 93.7%. It should be observed that this result was very positive, as all crown failures were related to extra ordinary causes and not one was a result of common bite forces or fati gue. The initial bone loss was in accordance with other studies on Bra nemark implants, and a stable situation was recorded after 2 years for the supporting bone around implants and adjacent teeth when the conic al implants were excluded. Soft tissues around implants and adjacent t eeth appeared healthy, and the cementation and the placement of the ab utment shoulder in the peri-implant sulcus did not cause any recession of the peri-implant mucosal Conclusion: CeraOne experienced virtually no complications and proved to be a highly predictable and safe prost hodontic concept. CeraOne also eliminated problems with abutment screw loosening and created a platform for good esthetic results and satisf ied patients.