Department of Endodontics, Faculty of Dentistry, Istanbul Health and Technology University, Istanbul, Turkey.
Current Affiliation: Afyonkarahisar Health Sciences University, Faculty of Dentistry, Department of Endodontics, Afyonkarahisar, Turkey.
PeerJ. 2023 Mar 29;11:e15183. doi: 10.7717/peerj.15183. eCollection 2023.
This study aimed to compare the micro-shear bond strength (µSBS) performances of two resin-based calcium silicate-based cement (CSC) (TheraCal PT and TheraCal LC), Biodentine, and two modified-MTA CSC materials (NeoMTA 2 and BioMTA+) to bulk-fill restorative material.
Fifty 3D printed cylindrical resin blocks with a central hole were used (2 mm in depth and 4 mm in diameter). CSCs were placed in the holes (per each group = 10) and incubated for 24 h. Cylindrical polyethylene molds (2 mm in height and diameter) were used to place the bulk-fill restorative materials on the CSCs and polymerize for 20 s. Then, all specimens were incubated for 24 h at 37 °C at a humidity of 100%. Specimen's µSBSs were determined with a universal testing machine. Data were analyzed with one-way ANOVA (Welch) and Tamhane test.
Statistically higher µSBS was found for TheraCal PT (29.91 ± 6.13 MPa) ( < 0.05) respect to all the other materials tested. TheraCal LC (20.23 ± 6.32 MPa) ( > 0.05) reported higher µSBS than NeoMTA 2 (11.49 ± 5.78 MPa) and BioMTA+ (6.45 ± 1.89 MPa) ( < 0.05). There was no statistical difference among TheraCal LC, NeoMTA 2 and Biodentine (15.23 ± 7.37 MPa) and between NeoMTA 2 and BioMTA+ ( > 0.05).
Choosing TheraCal PT as the pulp capping material may increase the adhesion and µSBS to the bulk-fill composite superstructure and sealing ability.
本研究旨在比较两种树脂基硅酸钙基水泥（CSC）（TheraCal PT 和 TheraCal LC）、Biodentine 以及两种改良型-MTA CSC 材料（NeoMTA 2 和 BioMTA+）与块状充填修复材料的微剪切粘结强度（µSBS）性能。
使用了 50 个 3D 打印的圆柱形树脂块，中央有一个孔（深度为 2mm，直径为 4mm）。将 CSCs 放置在孔中（每组 10 个），并孵育 24 小时。使用圆柱形聚乙烯模具（高度和直径均为 2mm）将块状充填修复材料放置在 CSCs 上，并聚合 20 秒。然后，所有标本在 37°C 下孵育 24 小时，湿度为 100%。使用万能试验机测定标本的µSBS。使用单因素方差分析（Welch）和 Tamhane 检验对数据进行分析。
TheraCal PT 的µSBS 明显高于其他所有测试材料（29.91 ± 6.13 MPa）（<0.05）。TheraCal LC 的µSBS （20.23 ± 6.32 MPa）（>0.05）高于 NeoMTA 2 的µSBS （11.49 ± 5.78 MPa）和 BioMTA+的µSBS （6.45 ± 1.89 MPa）（<0.05）。TheraCal LC、NeoMTA 2 和 Biodentine 的µSBS 之间（15.23 ± 7.37 MPa）和 NeoMTA 2 与 BioMTA+之间（>0.05）没有统计学差异。
选择 TheraCal PT 作为盖髓材料可能会增加与块状充填复合上层结构的黏附力和µSBS，以及密封能力。
