IADR Abstract Archives
Impact of Sterilization and Ultrasonic Procedures on Resin Cement Roughness
Objectives: Components of customized implant abutments are glued together by resin cements. This study investigated the impact of water storage, sterilization and ultrasonic cleaning procedures on the surface roughness of resin glues.
Methods: High-gloss polished specimens (Struers-Tegramin25) of five resin cements were subjected to cleaning protocols. Protocol 1: 10min of ultrasonic cleaning with an antibacterial detergent at 60°C, 10min of ultrasonic cleaning in ethanol at 60°C, and 10min of purging in distilled water at 60°C. Protocol 2: purging in antimicrobial detergent at 25°C for 30min and autoclave at 134°C for 5min. Roughness (Ra)(KeyenceVK-X100-laser-scanner) was measured after baseline, protocol 1, 2, 90d water storage and protocol 1, 2 + water storage. Statistics: means, standard-error of means, t-test, percentage of Ra -chance compared to baseline.
Results: The highest baseline Ra values were found for Attachment bond (2.4+/- 0.2µm) and after protocol 1 +water storage for Attachment Bond (6.0+/- 0.7 µm and RelyX Unicem 2 (4.8+/-0.9µm).
Conclusions: Surface roughness of the resin cements was statistically significant more affected by water storage than by protocol 1 or 2. However, both cleaning protocols contribute to higher roughness values of all cements.
Methods: High-gloss polished specimens (Struers-Tegramin25) of five resin cements were subjected to cleaning protocols. Protocol 1: 10min of ultrasonic cleaning with an antibacterial detergent at 60°C, 10min of ultrasonic cleaning in ethanol at 60°C, and 10min of purging in distilled water at 60°C. Protocol 2: purging in antimicrobial detergent at 25°C for 30min and autoclave at 134°C for 5min. Roughness (Ra)(KeyenceVK-X100-laser-scanner) was measured after baseline, protocol 1, 2, 90d water storage and protocol 1, 2 + water storage. Statistics: means, standard-error of means, t-test, percentage of Ra -chance compared to baseline.
Results: The highest baseline Ra values were found for Attachment bond (2.4+/- 0.2µm) and after protocol 1 +water storage for Attachment Bond (6.0+/- 0.7 µm and RelyX Unicem 2 (4.8+/-0.9µm).
Conclusions: Surface roughness of the resin cements was statistically significant more affected by water storage than by protocol 1 or 2. However, both cleaning protocols contribute to higher roughness values of all cements.