Asgeir G Asgeirsson1, Irena Sailer2, Felix Gamper1, Ronald E Jung1, Christoph H F Hämmerle1, Daniel S Thoma1. 1. Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center of Dental Medicine, University of Zurich, Zurich, Switzerland. 2. Division of Fixed Prosthodontics and Biomaterials, University Clinic of Dental Medicine, University of Geneva, Geneva, Switzerland.
Abstract
OBJECTIVES: To assess clinical, technical, and esthetic outcomes of veneered zirconia reconstructions cemented on non-original titanium bases over 1 year. MATERIALS AND METHODS: Twenty-four healthy patients presented with one missing tooth in the anterior maxilla or mandible and received a two-piece dental implant. The implants were restored with a screw-retained crown using a directly veneered zirconia reconstruction, which was extraorally cemented on a titanium base. After crown insertion, patients were scheduled for a baseline examination and re-examined at 6 months and at 1 year of loading. Measurements included biological, technical, and esthetic parameters. Data were analyzed with nonparametric tests. RESULTS: Mean marginal bone levels measured 0.54 ± 0.39 mm (median: 0.47, range: 0.07-1.75 mm) at baseline and 0.54 ± 0.45 mm (median: 0.44, range: 0.06-1.52 mm) at 1 year. Mean probing depth (PD) (3.0 ± 0.6 mm at baseline to 3.5 ± 0.7 mm at 1 year [p = 0.002]), bleeding on probing (BOP) (27.1% ± 20.7% at baseline to 43.9% ± 28.0% at 1 year [p = 0.041]), plaque index (PI) (11.1% ± 21.2% at baseline to 18.2% ± 21.8% at 1 year [p = 0.381]) increased, whereas the width of the keratinized mucosa decreased from baseline to 1 year (3.1 ± 1.3 mm at baseline to 3.0 ± 1.2 mm at 1 year [p = 0.398]). Four implants (16.7%) were diagnosed with peri-implantitis (BOP positive, bone loss >1 mm) during the 1-year observation period. One implant was lost at 3 ½ months, resulting in a 95.8% survival rate. Four technical complications occurred and led to 83.3% complication-free reconstructions. CONCLUSION: A significant increase in PD and BOP values was observed using directly veneered zirconia reconstructions cemented on non-original titanium bases.
OBJECTIVES: To assess clinical, technical, and esthetic outcomes of veneered zirconia reconstructions cemented on non-original titanium bases over 1 year. MATERIALS AND METHODS: Twenty-four healthy patients presented with one missing tooth in the anterior maxilla or mandible and received a two-piece dental implant. The implants were restored with a screw-retained crown using a directly veneered zirconia reconstruction, which was extraorally cemented on a titanium base. After crown insertion, patients were scheduled for a baseline examination and re-examined at 6 months and at 1 year of loading. Measurements included biological, technical, and esthetic parameters. Data were analyzed with nonparametric tests. RESULTS: Mean marginal bone levels measured 0.54 ± 0.39 mm (median: 0.47, range: 0.07-1.75 mm) at baseline and 0.54 ± 0.45 mm (median: 0.44, range: 0.06-1.52 mm) at 1 year. Mean probing depth (PD) (3.0 ± 0.6 mm at baseline to 3.5 ± 0.7 mm at 1 year [p = 0.002]), bleeding on probing (BOP) (27.1% ± 20.7% at baseline to 43.9% ± 28.0% at 1 year [p = 0.041]), plaque index (PI) (11.1% ± 21.2% at baseline to 18.2% ± 21.8% at 1 year [p = 0.381]) increased, whereas the width of the keratinized mucosa decreased from baseline to 1 year (3.1 ± 1.3 mm at baseline to 3.0 ± 1.2 mm at 1 year [p = 0.398]). Four implants (16.7%) were diagnosed with peri-implantitis (BOP positive, bone loss >1 mm) during the 1-year observation period. One implant was lost at 3 ½ months, resulting in a 95.8% survival rate. Four technical complications occurred and led to 83.3% complication-free reconstructions. CONCLUSION: A significant increase in PD and BOP values was observed using directly veneered zirconia reconstructions cemented on non-original titanium bases.
Authors: Franz J Strauss; Marina Siegenthaler; Christoph H F Hämmerle; Irena Sailer; Ronald E Jung; Daniel S Thoma Journal: Clin Oral Implants Res Date: 2022-05-29 Impact factor: 5.021
Authors: Stefan P Bienz; Miha Pirc; Spyridon N Papageorgiou; Ronald E Jung; Daniel S Thoma Journal: Clin Oral Implants Res Date: 2022-06 Impact factor: 5.021