應用高分子聚合物樹脂複合材以研發玻璃纖維根柱及樹脂類根柱黏著劑之研究

Abstract

近年來牙科卓越的進步，主要是因為牙科材料的發展而帶動。同時隨著美學日益受到大眾的重視也加速了玻璃纖維根柱和樹脂黏著劑的創新和發展。本團隊在早期的實驗當中就已投入大量的人力、資源在開發新玻璃纖維根柱的配方；近來，由於市售商品A在製膠工業界，被大力推廣與使用。本團隊在第一時間以保密協定取得主要配方，並將其應用在我們早期開發的玻璃纖維根柱配方當中，發現在原本的玻璃纖維根柱配方中添加10wt％ A其與市售樹脂黏著劑的黏著效果良好，在與市售玻璃纖維根柱的評比實驗當中，幾乎快達到市售玻璃纖維根柱與市售樹脂黏著劑之黏結力的兩倍（10.37±0.73 MPa；18.55±2.2 MPa）。由於這項發現讓本團隊更致力於利用A的主成分做為添加劑去研發配製，而我們也發現其主成分中B與C的添加是最有顯著效果的（25.04±1.26 MPa）。又由文獻可知，玻璃纖維根柱的黏著，最弱的界面往往存在樹脂黏著劑與牙本質之間，這也促使我們致力於樹脂黏著劑的開發，發現在以Bis-GMA與TEGDMA為樹脂基質中，添加少量的B與C（10 wt％）即能使樹脂基質與牙本質之間的鍵結能力提升，無論是在推離鍵結測試還是破裂強度測試都相當顯著（24.63±1.59 MPa）、（247.13±36.73 J/m2）。輔以界面分析，透過掃描式電子顯微鏡/能量散佈光譜儀（SEM/EDS）、傅立葉轉換紅外線光譜儀(ATR-FTIR)、X射線光電子光譜儀（XPS），可以讓我們知道破裂界面的屬性，以及樹脂黏著劑的性質，有助於日後對樹脂黏著劑的改質與強化提供新的方向。

In recent years, because of the development of dental materials, the dentistry is great advanced. In the mean while, people pay much attention to esthetics, so it also accelerates the creation and development of glass fiber posts and resin cements. In previous experiments, our team have made efforts in creating new glass fiber post formula; recently, a product, A, was used widely in the adhesive industry. We made an agreement with DBC to apply A into our glass fiber post formula. We found that if we added 10wt% of A into the glass fiber post formula, the bonding strength with commercial resin cement was greatly enhanced. Compared our glass fiber post with commercial glass fiber post, the bonding strength of our glass fiber post with commercial resin cement was almost twice as commercial glass fiber post (10.37±0.73 MPa；18.55±2.2 MPa). Because of this discovery, we made more efforts in how to use the main composition of A as addition. After that we also find B combine C possessed the most significant outcome (25.04±1.26 MPa). In the review articles, we know the weakest interface of glass fiber post cementation is in the dentin- resin cement interface. So we also concentrated on the development of resin cement. We found that if a small amount of B and C (10wt%) were added into the resin matrix composed of Bis-GMA and TEGDMA, the bonding strength of dentin- resin cement increased. 24.63±1.59 MPa for push-out test and 247.13±36.73 J/m2 for fracture toughness test. With the assist of SEM/EDS, ATR-FTIR, XPS, we knew the type of fracture interface and the property of resin cement. It is helpful to make the resin cement more suitable in the clinical usage.