Huber, Christina and Rosentritt, Martin and Strasser, Thomas and Behr, Michael (2021) Machine-driven simulation of removing luting agent remnants from implant surfaces: An investigator-independent assessment of cleaning protocols. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, 121: 104584. ISSN 1751-6161, 1878-0180
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Introduction: To simulate removing luting agent remnants from crowns fixed onto implant-abutment analogs using a standardized machine-driven protocol including a scaler and air polishing or sonic. Material and methods: A motor-driven device was constructed that controlled the rotational speed of the specimens, machining distance, contact pressure, and working time. A standardized layer of cement (Provicol, VOCO; Cuxhaven, G; Ketac Cem, 3MEspe; Seefeld, G; or Rely X Unicem, 3MEspe, Seefeld, G) was placed onto the finishing line of the crowns luted onto titanium-abutment analogs. The cement layer was scaled with a fresh titanium scaler maneuvered by the motor-driven device and treated with air polishing or sonic. Protocol 1: Scaling only for 20s, 40s, or 60s; n=20; protocol 2: 40s of scaling plus 20s of air polishing; protocol 3: 20s of scaling plus 40s of air polishing; protocol 4: 20s of scaling plus 40s of sonic; protocol 5: 40s of scaling plus 20s of sonic; protocols 2-5: n=10. Cement remnants were counted digitally as "percentage of remnants". Statistics: mean, standard deviation, Bonferroni post hoc tests; alpha=0.05. Results: Ketac Cem was easily removed by scaling only and Provicol by scaling and air polishing, but the selfadhesive resin composite cement Rely X Unicem was not removable with the device. Only remnants of Provicol could be significantly reduced by further treatment after scaling (p<0.001). Conclusion: The presented motor-driven device enables reproducible investigations of various cleaning protocols and is thus useful to create an overview of cleaning protocols needed for the different types of cement.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | IN-VITRO; EXCESS CEMENT; ULTRASONIC SCALERS; TITANIUM; ABUTMENTS; RESTORATIONS; Luting agent; Cement; Remnants; Dental implant; Cleaning protocol |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Zahnärztliche Prothetik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Aug 2022 07:27 |
| Last Modified: | 22 Aug 2022 07:27 |
| URI: | https://pred.uni-regensburg.de/id/eprint/46281 |
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