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Veneered zirconia abutments cemented on non‐original titanium bases: 1‐year results of a prospective case series
Author(s) -
Asgeirsson Asgeir G.,
Sailer Irena,
Gamper Felix,
Jung Ronald E.,
Hämmerle Christoph H. F.,
Thoma Daniel S.
Publication year - 2019
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1111/clr.13457
Subject(s) - dentistry , crown (dentistry) , anterior maxilla , bleeding on probing , medicine , implant , maxilla , mandible (arthropod mouthpart) , titanium , orthodontics , materials science , periodontitis , surgery , botany , metallurgy , biology , genus
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.

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