Hu Zezhou, Xu Jia, Wang Yongsheng, Xu Lingdan, Yi Yangman, Liu Bin, Wang Zhaofeng
School/Hospital of Stomatology, Lanzhou University, Lanzhou, Gansu 730000, China.
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.
ACS Omega. 2023 Aug 29;8(36):32396-32403. doi: 10.1021/acsomega.3c01855. eCollection 2023 Sep 12.
Dental curing light with blue emission acts as the excitation source for the photopolymerization of the dental composite resin to achieve dental repairing. However, the current repair methods still suffer from a low monomer conversion degree and incomplete resin curing. In this study, novel dental resin composites (DRCs) were prepared by combining SrMgSiO:Eu,Dy (SMSED), a photoluminescent material with a blue long afterglow, and dental resin composites. The curing depth, double bond conversion, elastic modulus, compressive strength, water absorption and solubility, and cytotoxicity were investigated systematically. The results suggest that adding 1 wt % SMSED to dental resin composites can maximize the curing depth and double bond conversion rate of DRCs and reduce its water absorption capacity without affecting the mechanical properties and biological toxicity. This work explores the practical applications of SMSED in dental resin composites, which provides an important reference for further improving the effect of dental caries repair.
具有蓝光发射的牙科固化灯作为牙科复合树脂光聚合的激发源，以实现牙齿修复。然而，目前的修复方法仍然存在单体转化率低和树脂固化不完全的问题。在本研究中，通过将具有蓝色长余辉的光致发光材料SrMgSiO:Eu,Dy（SMSED）与牙科树脂复合材料相结合，制备了新型牙科树脂复合材料（DRCs）。系统研究了固化深度、双键转化率、弹性模量、抗压强度、吸水性和溶解性以及细胞毒性。结果表明，向牙科树脂复合材料中添加1 wt%的SMSED可以使DRCs的固化深度和双键转化率最大化，并降低其吸水能力，同时不影响其机械性能和生物毒性。这项工作探索了SMSED在牙科树脂复合材料中的实际应用，为进一步提高龋齿修复效果提供了重要参考。
