Influence of atmospheric pressure plasma treatment on mechanical proprieties of enamel and sealant bond strength.
Influence of atmospheric pressure plasma treatment on mechanical proprieties of enamel and sealant bond strength.
复制标题
DOI：
10.1002/jbm.b.33284
复制
发表时间：
2015-07
期刊：
影响因子：
--
通讯作者：
H. Teixeira;P. Coelho;S. Duarte;M. Janal;N. Silva;V. Thompson
中科院分区：
文献类型：
--
作者：
H. Teixeira;P. Coelho;S. Duarte;M. Janal;N. Silva;V. Thompson
目的探讨APP处理对牙釉质力学性能的影响及其促进牙釉质与未蚀牙釉质粘结的能力。方法对人磨牙进行切片，暴露颊面和舌面平面牙釉质区。将样品分为两组（蚀刻和未蚀刻），并进行三种表面处理(i) 5 slm氩气APP处理，NaOH表面处理和（iii）压缩空气应用（对照）。采用扫描电镜（SEM）、荧光显微镜（IFM）和角度仪对牙釉质表面进行表征。力学试验采用纳米压痕法和微剪切法。初始数据评估包括正态性验证（SPS软件）和方差检验，并采用适当的统计分析模型。对于所有统计推断，显著性设为0.05。结果与NaOH和对照组相比，血浆处理蚀刻组和未蚀刻组的SE显著升高。纳米压痕测试表明，与NaOH腐蚀组相比，对照组和等离子体组的Rank硬度明显更高。蚀刻基底的Rank弹性模量在对照组显著高于NaOH组和等离子体组。未蚀刻组的处理之间没有发现差异。对于µSBS测试，我们观察到APP处理在蚀刻和未蚀刻的牙釉质上显著增加了键合（p < 0.001）。该研究表明，APP可提高SE、表面润湿性和牙釉质与密封剂之间的结合强度，有可能替代传统的酸蚀过程或作为自蚀密封剂的辅助剂。
OBJECTIVES To define the effect of APP treatments on the mechanical properties of enamel and on its ability to promote sealant bonding to unetched enamel. METHODS Human molar teeth were sectioned exposing flat enamel regions at the buccal and lingual surfaces. The specimens were divided into two substrate groups (etched and unetched) and distributed over three surface treatments (i) 5 slm Argon APP treatment, NaOH surface treatment, and (iii) compressed air application (control). The Enamel surfaces were characterized by SEM, IFM, and Goniometer instruments. For the mechanical tests nanoindentation and microshear bond strength were employed. Initial data evaluation comprised normality verification (SPS S software) and variance checking and the appropriated statistical analysis model employed. For all statistical inferences, significance was set at 0.05. RESULTS SE was significantly higher for the etched and unetched group treated with Plasma relative to the NaOH and control groups. Nanoindentation testing determined that Rank hardness was significantly higher in the control and Plasma group relative to NaOH for the etched group. Rank Elastic Modulus was significantly higher on Control groups relative to NaOH and Plasma groups for the etched substrate. No difference was detected between treatments for the unetched group. For the µSBS test, we observed that APP treatment on etched and unetched enamel increased bonds significantly (p < 0.001). CONCLUSIONS This study demonstrated that APP increased SE, surface wettability and bond strength between enamel and sealants potentially serving as a substitute for conventional acid etching procedures or as an adjuvant for self-etch sealants.