IADR Abstract Archives
Clinical Outcome of Anterior Zirconia Cantilevered Resin-Bonded Fixed Dental Prostheses
Objectives: The purpose of this retrospective clinical study was to evaluate the survival and success rates of zirconia ceramic resin-bonded fixed dental prostheses (RBFDPs) with a single-retainer design in the replacement of missing maxillary and mandibular incisors.
Methods: Two hundred and fifty-four patients were provided with 322 cantilevered zirconia ceramic RBFDPs replacing missing incisors in the period from 2001 to 2022. The preparation of the abutment teeth was minimal and limited to the enamel and consisted of a lingual veneer design. All restorations were adhesively bonded. The patients were periodically followed-up.
Results: Sixteen patients could not be evaluated due to loss of contact or data. Two hundred and thirty-eight patients (60% female, 40% male) provided with 306 restorations participated in the study and were evaluated, with a mean age of 27 ± 18 months at the time of insertion with youngest patient being 7 years old and the oldest being 82 years old. Overall restorations were lost. Kaplan-Meier analysis revealed 5-, 10- and 15-year cumulative probability of surviving was of 0.99, 0.97 und 0.97, respectively. When debonding was considered as a failure, a cumulative probability of success after 5, 10 and 15 years was 0.95, 0.92 and 0.89 respectively. 15 out of the 17 debonded RBFDPs were adhesively rebonded without any further complications.
Conclusions: Zirconia ceramic single-retainer RBFDPs provide a minimally invasive treatment modality for replacing missing maxillary and mandibular incisors.
Methods: Two hundred and fifty-four patients were provided with 322 cantilevered zirconia ceramic RBFDPs replacing missing incisors in the period from 2001 to 2022. The preparation of the abutment teeth was minimal and limited to the enamel and consisted of a lingual veneer design. All restorations were adhesively bonded. The patients were periodically followed-up.
Results: Sixteen patients could not be evaluated due to loss of contact or data. Two hundred and thirty-eight patients (60% female, 40% male) provided with 306 restorations participated in the study and were evaluated, with a mean age of 27 ± 18 months at the time of insertion with youngest patient being 7 years old and the oldest being 82 years old. Overall restorations were lost. Kaplan-Meier analysis revealed 5-, 10- and 15-year cumulative probability of surviving was of 0.99, 0.97 und 0.97, respectively. When debonding was considered as a failure, a cumulative probability of success after 5, 10 and 15 years was 0.95, 0.92 and 0.89 respectively. 15 out of the 17 debonded RBFDPs were adhesively rebonded without any further complications.
Conclusions: Zirconia ceramic single-retainer RBFDPs provide a minimally invasive treatment modality for replacing missing maxillary and mandibular incisors.