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9種類の予防的ポリッシングペースト:CAD/CAMレジン複合材料の変色,光沢および表面特性への影響
Nine prophylactic polishing pastes: impact on discoloration, gloss, and surface properties of a CAD/CAM resin composite.
PMID: 29658069
抄録
目的:
CAD/CAMレジン複合材を赤ワインに14日間浸漬し,9種類の予防的研磨ペースト(PPP)で研磨した後の,変色の軽減と表面性状の変化を検討する.
OBJECTIVES: 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).
材料と方法:
長方形のディスク(N=172)を作製し,GC Cerasmart(GC Europe)を用いて研磨(P4000)し,1~4種類の関連するPPP(合計22種類)を用いた異なる研磨プロトコルを検討した.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/PVT-Ivoclar Vivadent, Zircate/ZIR Prophy Paste-Dentsply Sirona。表面性状(粗さ値(RV)/Ra,Rz,Rv,表面自由エネルギー(SFE),表面光沢(G),変色(ΔE))を保管前と保管後,および追加研磨後に分析した。データは,Kolmogorov-Smirnov検定,三元配置のANOVAとTukey-B post hoc,Mann-Whitney U,およびKruskal-Wallis H検定を用いて調べた(α<0.05)。
MATERIALS AND METHODS: 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).
結果:
RVについては、CLE、CCS、CPPの順に高い値を示し、SPOとDETが低い値を示した(p<0.001)。PPPのΔE値への影響は認められなかった(p=0.160)。SFE は、DET が最も低く、次いで SPO、CCS が最も高く、次いで NUP、CPP であった(p<0.001)。Gでは、CLEとNUPが最も低く、次いでCCS、ZIP、CLJ(p<0.001)、最も高いのはSPO(p<0.001)であった。ポリッシングは,ZIP(p=0.322)とCLE(p=0.083)を除いて,SFE値に概ねプラスの影響を与えた(p<0.001-p=0.007)。SPOを除き,研磨後にGは増加し,RVは減少した(p<0.001)が,Gには有意な変化がなかった(p=0.786)。
RESULTS: 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).
結論:
PPPを用いた研磨は,表面性状を改善し,一般的に推奨される。PPPの選択は,変色の除去にはあまり影響しない。マルチステップシステムは意識的に実施されるべきである。
CONCLUSIONS: 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.
臨床的関連性:
PPPの適切な選択は、補綴物の表面性状の臨床結果に不可欠である。すべての研磨ペーストが同じ最終的な表面品質につながるわけではありません。
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.