Paulo Siri, Abrantes Ana Margarida, Xavier Mariana, Brito Ana Filipa, Teixo Ricardo, Coelho Ana Sofia, Paula Anabela, Carrilho Eunice, Botelho Maria Filomena, Marto Carlos Miguel, Ferreira Manuel Marques
Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal.
Coimbra Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal.
J Funct Biomater. 2023 May 9;14(5):264. doi: 10.3390/jfb14050264.
(1) Background: Coronal microleakage can lead to endodontic treatment failure. This study aimed to compare the sealing ability of different temporary restorative materials used during endodontic treatment. (2) Methods: Eighty sheep incisors were collected, uniformized in length, and access cavities were performed, except for in the negative control group, where the teeth were left intact. The teeth were divided into six different groups. In the positive control group, the access cavity was made and left empty. In the experimental groups, access cavities were restored with three different temporary materials (IRM, Ketac™ Silver, and Cavit™) and with a definitive restorative material (Filtek Supreme™). The teeth were submitted to thermocycling, and two and four weeks later, they were infiltrated with TcNaO, and nuclear medicine imaging was performed. (3) Results: Filtek Supreme™ obtained the lowest infiltration values. Regarding the temporary materials, at two weeks, Ketac™ Silver presented the lowest infiltration, followed by IRM, whereas Cavit™ presented the highest infiltration. At four weeks, Ketac™ Silver remained with the lowest values, whereas Cavit™ decreased the infiltration, comparable to IRM. (4) Conclusion: Regarding temporary materials, Ketac™ Silver had the lowest infiltration at 2 and 4 weeks, whereas the highest infiltration was found in the Cavit™ group at two weeks and in the IRM group at 4 weeks.
(1) 背景：冠部微渗漏可导致牙髓治疗失败。本研究旨在比较牙髓治疗期间使用的不同临时修复材料的封闭能力。(2) 方法：收集80颗羊切牙，使其长度均匀一致，并制备进入腔，但阴性对照组的牙齿保持完整。将牙齿分为六个不同的组。阳性对照组制备进入腔并保持空的状态。在实验组中，用三种不同的临时材料（IRM、Ketac™ Silver和Cavit™）以及一种确定性修复材料（Filtek Supreme™）修复进入腔。对牙齿进行热循环处理，两周和四周后，用TcNaO进行渗透，并进行核医学成像。(3) 结果：Filtek Supreme™获得的渗透值最低。对于临时材料，两周时，Ketac™ Silver的渗透最低，其次是IRM，而Cavit™的渗透最高。四周时，Ketac™ Silver的值仍然最低，而Cavit™降低了渗透，与IRM相当。(4) 结论：对于临时材料，Ketac™ Silver在两周和四周时的渗透最低，而Cavit™组在两周时渗透最高，IRM组在四周时渗透最高。
