Dental Service, KK Women's and Children's Hospital.
Faculty of Dentistry, National University of Singapore.
Dent Mater J. 2022 Oct 2;41(5):698-704. doi: 10.4012/dmj.2021-319. Epub 2022 May 27.
Silver-modified atraumatic restorative technique (SMART) is an emerging restorative technique; however, the effect of silver diamine fluoride (SDF) application on the bond strength of glass ionomer cement (GIC) is unknown. This study aimed to determine if SDF application to sound and artificial caries-affected dentin (ACAD) immediately prior to GIC restoration affected microtensile bond strength (µTBS). Caries was induced on extracted molars using a pH-cycling protocol that was validated against natural caries (similar µTBS). Dentin surfaces were treated with 38% SDF, control groups with de-ionized water and immediately restored. Beam-shaped specimens were sectioned and subjected to tensile forces for µTBS determination. Two hundred and eighty-seven specimens from 40 teeth were tested. SDF application significantly (p<0.001) reduced µTBS in sound dentin (19.00±8.20 MPa vs. 14.60±6.68 MPa), while no difference was found in ACAD. No difference was found in failure mode among groups. For SMART, SDF application on sound dentin before immediate GIC restoration may decrease bond strength.
银改良型非创伤性修复技术（SMART）是一种新兴的修复技术；然而，目前尚不清楚应用氟化物银（SDF）对玻璃离子水门汀（GIC）粘结强度的影响。本研究旨在确定在 GIC 修复前立即将 SDF 应用于正常和人工龋损牙本质（ACAD）是否会影响微拉伸粘结强度（µTBS）。使用经 pH 循环方案验证的天然龋（相似的 µTBS）诱导提取磨牙上的龋。用 38% SDF 处理牙本质表面，对照组用去离子水，并立即修复。将梁状试件切割并施加拉伸力以确定 µTBS。从 40 颗牙齿中测试了 287 个标本。SDF 的应用显著（p<0.001）降低了正常牙本质中的 µTBS（19.00±8.20 MPa 比 14.60±6.68 MPa），而在 ACAD 中则没有差异。各组之间的失效模式无差异。对于 SMART，在立即进行 GIC 修复之前，将 SDF 应用于正常牙本质可能会降低粘结强度。
