银氨溶液处理对玻璃离子水门汀与正常及龋坏牙本质微拉伸粘结强度的影响。

Influence of Silver Diamine Fluoride Treatment on the Microtensile Bond Strength of Glass Ionomer Cement to Sound and Carious Dentin.

出版信息

Oper Dent. 2020 Sep 1;45(5):E271-E279. doi: 10.2341/19-237-L.

Abstract

CLINICAL RELEVANCE

This study provides valuable information about the influence of silver diamine fluoride (SDF) treatment on the microtensile bond strength of glass ionomer cement (GIC) to dentin.

SUMMARY

Objectives: To investigate the influence of silver diamine fluoride (SDF) treatment on the microtensile bond strength (mTBS) of glass ionomer cement (GIC) to sound and artificial carious dentin.Methods: Thirty dentin blocks prepared from 30 noncarious human molars were randomly allocated into either the sound (Gp1) or artificial carious dentin (Gp2) groups. A microbiological method was adopted to create artificial dentin caries lesions in Gp2 specimens. Each dentin block was sectioned into two halves perpendicularly, and each pair of block halves was randomly assigned to two subgroups to receive topical application of SDF (Gp1-SDF, Gp2-SDF) or water as control (Gp1-water, Gp2-water). An encapsulated GIC was bonded to the exposed dentin surfaces 14 days after the SDF/water application. After immersion for 7 days in artificial saliva, the GIC-dentin specimens were sectioned into beams for mTBS testing. Failure mode was examined after the mTBS test.Results: There was no significant difference in the mean mTBS values between the SDF and control subgroups (Gp1-SDF vs Gp1-water, 10.57±1.6 MPa vs 10.20±1.8 MPa; Gp2-SDF vs Gp2-water, 6.14±2.2 MPa vs 5.97±2.3 MPa; paired t-test, p>0.05). However, the mean mTBS value of the sound dentin group was significantly higher than that of the carious dentin group, irrespective of whether SDF was applied prior to GIC bonding (independent t-test, p<0.001). Proportionally more cohesive failures occurred in the sound dentin groups (Gp1-SDF, 48.4%; Gp1-water, 42.9%) compared with the carious dentin groups (Gp2-SDF, 15.6%; Gp2-water, 9.8%; p<0.05).Conclusions: SDF treatment had no significant influence on the mTBS of GIC to dentin. Compared with sound dentin, dentin with caries had lower mTBS to GIC.

摘要

临床相关性

本研究提供了关于银胺氟化物（SDF）处理对玻璃离子水门汀（GIC）与牙本质微拉伸结合强度影响的有价值的信息。

摘要

目的：研究银胺氟化物（SDF）处理对正常和人工龋牙本质的玻璃离子水门汀（GIC）微拉伸结合强度（mTBS）的影响。

方法

从 30 颗无龋人磨牙中制备 30 个牙本质块，随机分为正常牙本质组（Gp1）或人工龋牙本质组（Gp2）。采用微生物方法在 Gp2 标本中制作人工龋损。每个牙本质块垂直分为两半，每对半牙本质块随机分为两组，分别用 SDF（Gp1-SDF、Gp2-SDF）或水（Gp1-water、Gp2-water）局部处理。在 SDF/水应用 14 天后，将封装的 GIC 粘结到暴露的牙本质表面。在人工唾液中浸泡 7 天后，将 GIC-牙本质试件切成梁进行 mTBS 测试。mTBS 测试后检查失效模式。

结果

SDF 组和对照组的平均 mTBS 值无显著差异（Gp1-SDF 与 Gp1-water，10.57±1.6 MPa 与 10.20±1.8 MPa；Gp2-SDF 与 Gp2-water，6.14±2.2 MPa 与 5.97±2.3 MPa；配对 t 检验，p>0.05）。然而，正常牙本质组的平均 mTBS 值明显高于龋牙本质组，无论在 GIC 粘结前是否应用 SDF（独立 t 检验，p<0.001）。正常牙本质组（Gp1-SDF，48.4%；Gp1-water，42.9%）的比例性更多的是粘结破坏，而龋牙本质组（Gp2-SDF，15.6%；Gp2-water，9.8%；p<0.05）。