Microleakage assessment of CAD-CAM Cobalt-Chrome and Zirconia abutments on a conical connection dental implant: A comparative in vitro study
| Autor: | Pedro Molinero‐Mourelle, Andrea Roccuzzo, Burak Yilmaz, Walter Yu Hang Lam, Edmond H. N. Pow, Jaime Del Río Highsmith, Miguel Gómez‐Polo |
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| Rok vydání: | 2022 |
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| Zdroj: | Molinero-Mourelle, Pedro; Roccuzzo, Andrea; Yilmaz, Burak; Lam, Walter Yu Hang; Pow, Edmond H N; Del Río Highsmith, Jaime; Gómez-Polo, Miguel (2022). Microleakage assessment of CAD-CAM Cobalt-Chrome and Zirconia abutments on a conical connection dental implant: A comparative in vitro study. Clinical oral implants research, 33(9), pp. 945-952. Wiley-Blackwell 10.1111/clr.13973 E-Prints Complutense. Archivo Institucional de la UCM instname |
| DOI: | 10.48350/171317 |
| Popis: | OBJECTIVE To assess the marginal and bacterial microleakage in zirconia and CAD-CAM or cast Co-Cr implant abutments. METHODS Sixty-four conical connection implants with their respective abutments were divided into four groups (Co-Cr (milled, laser-sintered and cast) and Zirconia (milled)). All specimens were subjected to a chewing simulation and thermocycling. After aging process, specimens were submerged in a 0.2% methylene blue solution with Porphyromonas gingivalis (P.g) for 48 h. The marginal microleakage was measured by using a 40× optical microscopy at the internal part of the implant, and when positive microleakage was observed, a DNA isolation with a polymerase chain reaction (PCR) test was used. The microbiological assessment was based on colony forming units (CFUs). RESULTS Thirty (47%) implant-abutments presented microleakage and the PCR was performed on those specimens (1 Zirconia, 1 Co-Cr milled, 14 Co-Cr laser-sintered and 14 cast). Seven specimens (1 Co-Cr laser-sintered and 6 cast) presented values below the PCR detection limit ( |
| Databáze: | OpenAIRE |
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