歯内療法を受けた歯のファイバーポストセメントシステムとしてのグラスアイオノマーセメントの有効性について

The effectiveness of glass ionomer cement as a fiber post cementation system in endodontically treated teeth.

• Camila C Lorenzetti
• Janaina F Bortolatto
• Anna T P R Ramos
• André L Shinohara
• Jose R C Saad
• Milton C Kuga

抄録

本研究では，グラスアイオノマー（GC Gold Label 1，GIC）を使用したグラスファイバーポストのセメントシステムとして，自己接着性レジンセメント（Relyx U200，RUC）と従来のレジンセメントシステム（Scotchbond Muli-Purpose，Relyx ARC，RAC）の性能を比較した．歯内療法を受けた30本の犬歯を、ファイバーポストセメントシステムに応じて、無作為に3群（n=10）に分けた。(RAC)-Scotchbond Multi-Purpose and Relyx X ARC，(RUC)-Relyx U200，(GIC)-GC Gold Label 1 Luting & Liningであった．ローダミンはファイバーポストセメントの前にセメントシステムに組み込まれた。グラスファイバーポストセメント後、歯根を人工唾液中で6ヶ月間培養した。その後，ポストスペースの頸部，中央部，先端部の3分の1ずつの標本を作成し，プッシュアウト接着強さ試験と共焦点レーザー顕微鏡を用いて分析した。ANOVA one wayおよびTukey検定の結果、GICとRUCは、ポストスペースの3分の1に関係なく、同様のプッシュアウト接着強さを示した（p > 0.05）。

This study compared the performance of a glass ionomer (GC Gold Label 1, GIC) as a fiber post cementation system for glass fiber posts with a self-adhesive resin cement (Relyx U200, RUC) and a conventional resin cement system (Scotchbond Muli-Purpose and Relyx ARC, RAC). Thirty endodontically treated canines were randomly divided in three groups (n = 10), according to the fiber post cementation system: (RAC)-Scotchbond Multi-Purpose and Relyx X ARC; (RUC)-Relyx U200 and (GIC)-GC Gold Label 1 Luting & Lining. Rhodamine was incorporated into the cementation system prior to the fiber post cementation. After glass fiber post cementation, roots were incubated in artificial saliva for 6 months. After that, specimens from the cervical, middle, and apical thirds of the post space were prepared and analyzed using a push-out bond strength test and confocal laser microscopy. ANOVA one way and Tukey tests showed that GIC and RUC demonstrated similar push-out bond strength values, independently of the post space third (p > .05); however, values were greater than those shown by RAC (p < .05). For dentin penetrability, GIC and RUC also had similar results (p > 0.05) and lower than RAC (p < 0.05). Inside the root canal, the cementation system using glass ionomer cement (GC Gold Label 1 Luting & Lining) has similar push-out bond strength to the self-adhesive resin cement (Relyx U200) and these were higher than the conventional resin (Relyx ARC), despite its higher dentin penetrability.

© 2019 Wiley Periodicals, Inc.