Swetha Bollineni, Priya B Devi, Reddy K Hanisha, Prasanthi G, Mohan T Murali, Tejaswi Dumpa
Department of Conservative Dentistry and Endodontics, Government Dental College and Hospital, Vijayawada, Andhra Pradesh, India.
J Conserv Dent Endod. 2025 Jul;28(7):613-618. doi: 10.4103/JCDE.JCDE_159_25. Epub 2025 Jul 2.
The study aims to evaluate the calcium silicate coating on the gutta-percha (GP) surface, modified with different pretreatments, and the effect of surface pretreatments on AH Plus bioceramic sealer wettability.
Sixty GP discs were randomly assigned to three groups. Group 1: no surface pretreatment and calcium silicate coating, Group 2: chemical treatment and calcium silicate coating, and Group 3: Nonthermal atmospheric plasma treatment and calcium silicate coating. Afterward, the topographic examination was performed using scanning electron microscopy (SEM), energy-dispersive X-ray analysis, and the wettability of the bioceramic sealer was analyzed using a goniometer.
SEM analysis revealed that Group 3 showed a nanostructured calcium silicate coating with high levels of calcium (Ca) and silicon (Si) (106.38 ± 2.74 and 270.81 ± 47.18, respectively) and the least contact angle (52.73 ± 6.91), indicating superior sealer wettability.
Functionalized GP with a nanostructured calcium silicate thin film provides better wettability with AH Plus bioceramic sealer. Surface modifications of GP were improved by pretreatments, resulting in enhanced coatings. Among the pretreatment methods, plasma pretreatment resulted in superior calcium silicate coating and sealer wettability.
本研究旨在评估经不同预处理改性的牙胶（GP）表面的硅酸钙涂层，以及表面预处理对AH Plus生物陶瓷封闭剂润湿性的影响。
将60个GP圆盘随机分为三组。第1组：未进行表面预处理，仅涂覆硅酸钙涂层；第2组：化学处理后涂覆硅酸钙涂层；第3组：非热大气等离子体处理后涂覆硅酸钙涂层。之后，使用扫描电子显微镜（SEM）进行形貌检查、能量色散X射线分析，并使用测角仪分析生物陶瓷封闭剂的润湿性。
SEM分析显示，第3组呈现出具有高水平钙（Ca）和硅（Si）（分别为106.38±2.74和270.81±47.18）的纳米结构硅酸钙涂层，且接触角最小（52.73±6.91），表明封闭剂润湿性更佳。
具有纳米结构硅酸钙薄膜的功能化GP与AH Plus生物陶瓷封闭剂具有更好的润湿性。GP的表面改性通过预处理得到改善，从而增强了涂层性能。在预处理方法中，等离子体预处理产生了更优异的硅酸钙涂层和封闭剂润湿性。
