Department of Prosthetic Dentistry, Klinikum der Universität München, LMU München, Goethestraße 70, 80336, Munich, Germany.
Section Medical Materials Science & Technology, University Hospital Tübingen, Osianderstraße 2-8, 72076, Tübingen, Germany.
Clin Oral Investig. 2019 Jan;23(1):327-335. doi: 10.1007/s00784-018-2440-z. Epub 2018 Apr 16.
To investigate discoloration reduction and changes of surface properties of a CAD/CAM resin composite after 14 days´ storage in red wine and polishing with nine different prophylactic polishing pastes (PPPs).
Rectangular 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, Détartrine/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 (ΔE)) 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 (α < 0.05).
Regarding 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 ΔE 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).
Polishing 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.
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.
研究 CAD/CAM 树脂复合材料在储存于红酒中 14 天后的脱色减少和表面性能变化，以及使用九种不同预防性抛光膏（PPPs）进行抛光后的变化。
制作了矩形圆盘（N=172）并进行抛光（P4000），使用 GC Cerasmart（GC Europe）研究了不同的抛光方案，涉及 1-4 种相关的递减 PPP（共 22 种）：Cleanic/CLE-Kerr、CleanJoy/CLJ-Voco、Clean Polish/Super Polish/SPO-Kerr、Clinpro Prophy Paste/CPP-3M、Détartrine/DET-Septodont、Nupro/NUP-Dentsply Sirona、Prophy Paste CCS/CCS-Directa、Proxyt/PXT-Ivoclar Vivadent 和 Zircate/ZIR Prophy Paste-Dentsply Sirona。在储存和额外抛光前后分析表面性能（粗糙度值（RV）/Ra、Rz、Rv、表面自由能（SFE）、表面光泽度（G）和变色（ΔE））。使用 Kolmogorov-Smirnov 检验、三因素方差分析（Tukey-B 后验检验）、Mann-Whitney U 检验和 Kruskal-Wallis H 检验（α<0.05）进行数据检验。
在 RV 方面，CLE、CCS 和 CPP 的值最高，SPO 和 DET 的值最低（p<0.001）。PPP 对 ΔE 值没有影响（p=0.160）。DET 呈现最低的 SFE，其次是 SPO，最高的是 CCS，其次是 NUP 和 CPP（p<0.001）。在 G 方面，CLE 和 NUP 的值最低，其次是 CCS、ZIP 和 CLJ（p<0.001），SPO 的值最高（p<0.001）。抛光通常对 SFE 值有积极影响（p<0.001-p=0.007），除了 ZIP（p=0.322）和 CLE（p=0.083）。抛光后 G 值增加，RV 值降低（p<0.001），除了 SPO，G 值没有显著变化（p=0.786）。
使用 PPP 抛光可以改善表面性能，一般推荐使用。PPP 的选择对去除变色的作用较小。应认真进行多步系统。
正确选择 PPP 对修复体表面性能的临床效果至关重要。并非每种抛光膏都能达到相同的最终表面质量。
