SEM analysis of the acid-etched enamel patterns promoted by acidic monomers and phosphoric acids.
SEM analysis of the acid-etched enamel patterns promoted by acidic monomers and phosphoric acids.
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DOI：
10.1590/s1678-77572006000600008
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发表时间：
2006-12
期刊：
影响因子：
--
通讯作者：
de Goes MF
中科院分区：
文献类型：
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作者：
Shinohara MS;de Oliveira MT;Di Hipólito V;Giannini M;de Goes MF
虽然自酸蚀粘接系统(SES)被认为是用于粘接的牙釉质，但人们对其有效性表示了担忧。本研究的目的是分析9种SES与35%和34%磷酸酸蚀剂(FA)在完整(IN)和磨削(GR)牙釉质表面上的酸蚀模式(EP)。对22颗人第三磨牙进行近中远中和颊舌向切开，每颗牙切取4个牙片。一半的碎片是用600砂砾的碳化硅纸研磨的，另一半保持完好。根据釉质表面的纹理(IN和GR)和酸蚀釉质的技术(34%FA、35%FA、AdheSE Primer、Brush&Bond、Clearfi Protected Bond Primer、iBond、One-Up Bond F、OptiBond Solo Plus Primer、Tyrian SPE Primer、Unifi Bond Primer和Xeno III)，将碎片随机分为22组。根据制造商的说明，在IN和GR牙釉质表面应用了护发素。用磷酸腐蚀的样品用水清洗，而用SES处理的表面用乙醇和丙酮交替清洗。将样品干燥，溅射涂层，并在扫描电子显微镜下进行检查。对于IN和GR釉质表面，除Tyrian SPE外，34%和35%FA的EP比SES的EP更深、更均匀。自酸蚀体系对GR牙釉质的酸性单体作用更为明显。大多数SES的侵蚀性低于磷酸酸蚀剂，而且它们对完整牙釉质表面的酸蚀作用较小。方法：酸蚀；牙釉质；电子显微镜。
Although self-etching bonding systems (SES) are indicated to prepare dental enamel for bonding, concerns have been expressed regarding their effectiveness. The aim of this study was to analyze the etching pattern (EP) of nine SES in comparison with 35% and 34% phosphoric acid etchants (FA) on intact (IN) and ground (GR) enamel surface. Twenty-two human third molars were sectioned in mesial-distal and buccal-lingual directions, and four dental fragments were obtained from each tooth. Half of the fragments were ground using 600-grit SiC paper and the other half remained intact. The fragments were randomly assigned into 22 groups, according to the texture of enamel surface (IN and GR) and the technique to etch the enamel (34% FA, 35% FA, AdheSE primer; Brush & Bond; Clearfil Protect Bond primer; iBond; One-up Bond F; OptiBond Solo Plus primer; Tyrian SPE primer; Unifil Bond primer and Xeno III). Conditioners were applied to IN and GR enamel surfaces, according to the manufacturer's instructions. Specimens etched with phosphoric acids were washed with water, while the surfaces treated with SES were submitted to alternate rinsing with alcohol and acetone. The specimens were dried, sputter-coated and examined under a scanning electron microscope. For both IN and GR enamel surfaces, the EP of 34 and 35% FA was deeper and more homogeneous in comparison to EP of SES, except for Tyrian SPE. The acidic monomer action of self-etching systems was more effective on GR enamel. Most of the SES are less aggressive than phosphoric acid etchants and their etching effects were reduced on intact enamel surfaces. Uniterms: Dental acid etching; Dental enamel; Electron microscopy.