Nine prophylactic polishing pastes: impact on discoloration, gloss, and surface properties of a CAD/CAM resin composite

Liebermann, Anja; Spintzyk, Sebastian; Reymus, Marcel; Schweizer, Ernst und Stawarczyk, Bogna (2019): Nine prophylactic polishing pastes: impact on discoloration, gloss, and surface properties of a CAD/CAM resin composite. In: Clinical Oral Investigations, Bd. 23, Nr. 1: S. 327-335

Abstract

ObjectivesTo investigate discoloration reduction and changes of surface properties of a CAD/CAM resin composite after 14days storage in red wine and polishing with nine different prophylactic polishing pastes (PPPs).Materials and methodsRectangular discs (N=172) were fabricated and polished (P4000) using GC Cerasmart (GC Europe) to investigate different polishing protocols with 1-4 related descending PPPs (22 in total): Cleanic/CLE-Kerr, CleanJoy/CLJ-Voco, Clean Polish/Super Polish/SPO-Kerr, Clinpro Prophy Paste/CPP-3M, Detartrine/DET-Septodont, Nupro/NUP-Dentsply Sirona, Prophy Paste CCS/CCS-Directa, Proxyt/PXT-Ivoclar Vivadent, and Zircate/ZIR Prophy Paste-Dentsply Sirona. Surface properties (roughness values (RV)/Ra, Rz, Rv, surface free energy (SFE), surface gloss (G), and discoloration (E)) were analyzed before and after storage and additional polishing. Data were examined using Kolmogorov-Smirnov test, three-way ANOVA followed by Tukey-B post hoc, Mann-Whitney U, and Kruskal-Wallis H tests (<0.05).ResultsRegarding RV, CLE, followed by CCS, and CPP showed the highest values;the lowest presented SPO and DET (p<0.001). No impact of PPP was observed on E values (p=0.160). The lowest SFE presented DET, followed by SPO;highest showed CCS followed by NUP and CPP (p<0.001). Within G, lowest values were observed for CLE and NUP, followed by CCS, ZIP, and CLJ (p<0.001);the highest presented SPO (p<0.001). Polishing showed generally a positive impact on SFE values (p<0.001-p=0.007), except ZIP (p=0.322) and CLE (p=0.083). G increased and RV decreased after polishing (p<0.001), except SPO, with no significant change for G (p=0.786).ConclusionsPolishing with PPPs improves the surface properties and is generally recommended. The choice of PPP has a minor role in removing discolorations. Multi-step systems should be carried out conscientiously.Clinical relevance< The proper selection of PPP is essential for the clinical outcome of surface properties of prosthetic restorations. Not every polishing paste leads to the same final surface quality.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Medizin
• Themengebiete: 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit
• ISSN: 1432-6981
• Sprache: Englisch