余分な接着層が万能接着剤の薄い膜厚を補います

Extra Bonding Layer Compensates Universal Adhesive's Thin Film Thickness.

• Mohammed H Ahmed
• Chenmin Yao
• Kirsten Van Landuyt
• Marleen Peumans
• Bart Van Meerbeek

抄録

用途:

PURPOSE: Universal adhesives (UAs) are applied in 2-step etch-and-rinse (2-E&R) or 1-step self-etch (1-SE) mode. This study investigated whether three UAs could benefit from a highly filled extra bonding layer (EBL), turning them into 3-E&R and 2-SE UAs, respectively, thus also compensating for the commonly thin film thickness of UAs.

材料と方法:

微小引張接着強さ（μクリアフィルユニバーサルボンドクイック（C-UBq，クラレノリタケ），G-プレミオボンド（G-PrB，GC）およびプライム＆ボンドアクティブ（P&Ba，Dentsply Sirona）を，オプティボンドFL（Opti-FL_ar，Kerr）の接着樹脂（EBL）の有無にかかわらず，E&RおよびSEモードで塗布したバーカット象牙質に対する微小引張接着強さ（TBS）を，3-E&RaオプティボンドFL（Opti-FL）のそれと比較した。

MATERIALS AND METHODS: Microtensile bond strength (μTBS) to bur-cut dentin of Clearfil Universal Bond Quick (C-UBq, Kuraray Noritake), G-Premio Bond (G-PrB, GC) and Prime&Bond Active (P&Ba, Dentsply Sirona), applied in E&R and SE mode without/with the adhesive resin (EBL) of OptiBond FL (Opti-FL_ar, Kerr), was compared to that of the 3-E&Ra OptiBond FL (Opti-FL; Kerr), which was also employed in 2-SE mode. As a cross reference, the SE primer of Clearfil SE Bond 2 (Kuraray Noritake) was combined with Opti-FL_ar (C-SE2/Opti-FL) and again applied in 2-SE and 3-E&R mode. μTBS was measured after 1 month of water storage (37°C) and additional 25,000 and 50,000 thermocycles (TC). All μTBS were statistically analyzed using three different linear mixed-effects models with specific contrasts (p < 0.05).

結果:

全体として、4つのパラメータ（接着剤、接着モード、エージング、EBL）がμTBSに大きく影響していることがわかった。G-PrBとP&Baは、E&RとSEの両方の接着モードで適用した場合、EBLの恩恵を受けた。E&RモードではP&Baが一般的に最も高いμTBSを示した。

RESULTS: Overall, the four parameters (adhesive, bonding mode, aging, EBL) significantly influenced μTBS. G-PrB and P&Ba benefited from EBL when applied in both E&R and SE bonding modes. In E&R mode, P&Ba generally revealed the highest µTBS; C-UBq presented an intermediate and G-PrB the lowest µTBS. No significant differences were found between different bonding modes. C-SE2/Opti-FL outperformed Opti-FL in 3-E&R and 2-SE_1 month/25k.

結論:

EBLの1ヶ月およびTC-aged bonding efficacyに対する全体的な有益性は、試験した異なるUAで異なっていた。

CONCLUSION: The overall benefit of EBL on the 1-month and TC-aged bonding efficacy differed for the different UAs tested.