Plasma treatment of dentin surfaces for improving self-etching adhesive/dentin interface bonding.
Plasma treatment of dentin surfaces for improving self-etching adhesive/dentin interface bonding.
复制标题
牙本质表面的血浆处理，以改善自蚀刻粘合剂/牙本质接口键合。
DOI：
10.1016/j.cpme.2015.05.002
复制
发表时间：
2015-06-01
影响因子：
--
通讯作者：
Yu Q
中科院分区：
文献类型：
--
作者：
Dong X;Li H;Chen M;Wang Y;Yu Q
本研究旨在评价等离子体处理牙本质表面的效果，以提高自酸蚀粘结剂和牙本质界面的粘接性。拔除牙冠后拔除未萌出的人第三磨牙暴露牙本质。每个牙本质表面的一半用大气非热Ar等离子体处理，另一半不处理，用作相同的牙齿对照。在牙本质表面按指示应用自酸蚀粘结剂和万能树脂复合体。修复后，用微拉伸粘接强度(μ-TBS)评价粘接剂与牙本质的粘接强度。粘结强度数据用直方图和基于不等方差的Welch t检验进行分析。μ-TBS测试结果显示，经等离子体处理后，μ-TBS平均值由未处理组的57.1±17.5 Mpa增加到69.7±11.5 Mpa。在37°C磷酸盐缓冲液(PBS)中浸泡2个月后，等离子体处理组的牙本质粘结强度从69.7±11.5 Mpa略降至63.9±14.4 Mpa，而未处理组的粘结强度从57.1±17.5 Mpa降至48.9±14.6 Mpa。水接触角测量和扫描电子显微镜(SEM)观察证实，等离子体处理后的水再湿处理可以部分打开牙本质小管，从而促进粘结剂的渗透，形成更厚的杂化层和更长的树脂标签，从而改善粘结剂/牙本质界面质量。
This study is to evaluate plasma treatment effects on dentin surfaces for improving self-etching adhesive and dentin interface bonding. Extracted unerupted human third molars were used after crown removal to expose dentin. One half of each dentin surface was treated with atmospheric non-thermal argon plasmas, while another half was untreated and used as the same tooth control. Self-etching adhesive and universal resin composite was applied to the dentin surfaces as directed. After restoration, the adhesive-dentin bonding strength was evaluated by micro-tensile bonding strength (μTBS) test. Bonding strength data was analyzed using histograms and Welch’s t-test based on unequal variances. μTBS test results showed that, with plasma treatment, the average μTBS value increased to 69.7±11.5 MPa as compared with the 57.1±17.5 MPa obtained from the untreated controls. After 2 months immersion of the restored teeth in 37 °C phosphate buffered saline (PBS), the adhesive-dentin bonding strengths of the plasma-treated specimens slightly decreased from 69.7±11.5 MPa to 63.9±14.4 MPa, while the strengths of the untreated specimens reduced from 57.1±17.5 MPa to 48.9±14.6 MPa. Water contact angle measurement and scanning electron microscopy (SEM) examination verified that plasma treatment followed by water rewetting could partially open dentin tubules, which could enhance adhesive penetration to form thicker hybrid layer and longer resin tags and consequently improve the adhesive/dentin interface quality.