A development of the bonding treatment of vertically fractured roots with cementum regeneration on 4-META/MMA-TBB resin

为改善纵折牙根的粘结治疗效果，本研究将树脂与牙本质粉复合，使新牙骨质形成，从而改善树脂与牙骨质的粘结。在体外，细胞毒性和微拉伸粘结强度（MTBS）测试进行了评估。它具有很小的细胞毒性，并表现出较高的粘结强度。在活体实验中，我们观察到在某些情况下，在树脂和牙本质粉的复合物上形成新的牙骨质。本实验可能显示了在树脂上形成新牙骨质的可能性。

To improve the bonding treatment of vertically fractured roots, we aimed to the newly cementum formation on a compound of resin and dentin powder, which may improve the binding between resin and cementum. In vitro, cytotoxicity and Micro Tensile Bond Strength (MTBS) test were assessed. It had little cytotoxicity and exhibited higher bond strength. In vivo, in some cases, we observed the newly cementum formation on a compound of resin and dentin powder. This experiment might exhibit a possibility of the newly cementum formation on a resin.