cad a22 4500 569274443 20200423035108.0 cr unu---uuuuu 190725e201905 xx s 000 0 eng 10.5167/uzh-171597 doi 10.1111/clr.13433 doi (ZORA)oai:www.zora.uzh.ch:171597 610 ddc 30972828 pmid All-ceramic single crowns supported by zirconia implants: 5-year results of a prospective multicenter study [Elektronische Daten] [Benedikt C Spies, Marc Balmer, Ronald E Jung, Irena Sailer, Kirstin Vach, Ralf-Joachim Kohal] openAccess eu-repo OBJECTIVES To assess survival/success rates and patient-reported outcome of zirconia-based posterior single crowns (SCs) supported by zirconia implants in a prospective two-center study after five years of observation. MATERIAL AND METHODS Forty-five patients were restored with 45 zirconia implant-supported posterior SCs composed of zirconia frameworks hand-layered with a leucite-reinforced feldspathic ceramic. Survival rates of SCs were assessed and technical success was evaluated according to modified United States Public Health Care (USPHS) criteria. Furthermore, patient-reported outcome measures (PROMs) were assessed by applying visual analog scales (VAS). Wilcoxon matched-pairs signed-rank test, mixed-effects ordered logistic regression, and linear mixed models were used to evaluate time effects on response variables. RESULTS Forty patients were available after a mean observation period of 61.0±1.4months. One SC had to be replaced, resulting in a Kaplan-Meier (KM) survival estimate for the SCs of 97.5±2.47%. Since nine reconstructions showed at least in one category a major deviation from the ideal (five major chippings, four with increased occlusal roughness, one significant crevice, and one pronounced over-contouring), the KM success estimate was 79.3±5.8%. Incidence of chipping (n=19) and occlusal roughness (n=35) was frequent (p<0.001). All PROMs at prosthetic delivery except for speech (p=0.139) showed significantly improved VAS scores (81%-94%; p<0.001) compared to pre-treatment evaluations. Thereafter, no decrease in satisfaction could be observed until the 5-year follow-up (93%-97%). CONCLUSION Veneered zirconia-based SCs supported by zirconia implants showed high survival rates and highly satisfied patients' needs. However, significant incidence of technical complications is compromising the clinical long-term outcome for this indication. Clinic of Reconstructive Dentistry zora Spies Benedikt C. joint author Balmer Marc joint author Jung Ronald E. joint author Sailer Irena joint author Vach Kirstin joint author Kohal Ralf-Joachim joint author Clinical Oral Implants Research 30(5):466-475 https://www.zora.uzh.ch/id/eprint/171597/1/Spies_et_al-2019-Clinical_Oral_Implants_Research_acc.pdf text/html WWW-Backlink auf das Repository 1 Journal Article PeerReviewed zora ZORA 856 40 https://www.zora.uzh.ch/id/eprint/171597/1/Spies_et_al-2019-Clinical_Oral_Implants_Research_acc.pdf text/html WWW-Backlink auf das Repository ZORA 700 1- Spies Benedikt C. joint author ZORA 700 1- Balmer Marc joint author ZORA 700 1- Jung Ronald E. joint author ZORA 700 1- Sailer Irena joint author ZORA 700 1- Vach Kirstin joint author ZORA 700 1- Kohal Ralf-Joachim joint author ZORA 773 0- Clinical Oral Implants Research 30(5):466-475 BK010053 XK010053 XK010000 ZORA ZORA ZORA Journal Article openAccess