セルフエッチングセラミックプライマーの積極的な塗布が異なる歯科用CAD/CAM材料の長期接着強度に及ぼす影響

Effect of active application of self-etching ceramic primer on the long-term bond strength of different dental CAD/CAM materials.

抄録

背景:

Background: The objective of this in vitro study was to evaluate the effect of the active application of self-etching ceramic primer (ME&P) on the bond strength of different dental CAD/CAM materials (Lithium Disilicate ceramic (LD), Leucite ceramic (LE), Zirconia reinforced lithium silicate ceramic (ZLS), and Hybrid ceramic (HC)) with thermocycling aging.

材料と方法:

試料を無作為に16群（n＝20）に分けた。デュアルレジンセメント円筒を作製し，10秒間光硬化（1.200 mW/cm2）させてせん断接着強さを測定した．3-way ANOVAにより，各因子は統計的に有意であった（< 0.05）．

Material and Methods: The samples were randomly divided into 16 groups (n = 20). Dual resin cement cylinders were made and light cured for 10 s (1.200 mW/cm2) for the shear bond strength test. 3-way ANOVA revealed that the factors were statistically significant (< 0.05).

結果:

二ケイ酸リチウムを除くすべてのグループにおいて，積極的に塗布した場合，経時変化は接着強さにマイナスの影響を及ぼした．ZLSとLEはME&Pのアクティブアプリケーションで高い接着強度の値を示し、有望な結果を示した。

Results: The aging process had a negative impact on the bond strength for all groups except for Lithium Disilicate, with active application. ZLS and LE showed promising results with high bond strength values for the ME&P active application; however, after aging the bond strength value was significantly reduced. HC showed reduced bond strength values regardless the ME&P application.

結論:

強化ガラスセラミックスを修復材料として使用する場合，耐久性のある接着強度を得るためには，セルフエッチングセラミックプライマーで20秒間の活性塗布と40秒間の静置という推奨プロトコルを遵守する必要がある．歯科、歯科材料、シラン、せん断強さ、コンピュータ支援設計

Conclusions: In order to obtain a durable bond strength, the recommended protocol of 20 s of active application followed by 40 s of sitting time in the self-etching ceramic primer should be followed when using reinforced-glass ceramics as restorative materials. Dentistry, dental materials, silane, shear strength, computer-aided design.