正畸附件与三种不同材料在经过不同表面处理后的生物力学评估： 。
Biomechanical evaluation between orthodontic attachment and three different materials after various surface treatments: .
出版信息
Angle Orthod. 2019 Sep;89(5):742-750. doi: 10.2319/072918-547.1. Epub 2019 Mar 11.
OBJECTIVES
To determine the best bonding method of orthodontic attachment among monolithic zirconia, feldspathic porcelain, hybrid porcelain, and the impact of surface-conditioning methods using a three-dimensional optical profilometer after debonding.
MATERIALS AND METHODS
56 feldspathic porcelain, 56 monolithic zirconia, and 56 hybrid porcelain samples were divided into four surface treatment subgroups: (1) hydrofluoric (HF) acid etch + silane, (2) AlO sandblasting + silane, (3) silicoating (SiO), and (4) diamond bur + silane. The specimens were tested to evaluate shear bond strength (SBS). Residual composite was removed after debonding. Three-dimensional white-light interferometry was used to obtain quantitative measurements on surface roughness.
RESULTS
The highest SBS value was found for the HF acid-etched feldspathic porcelain group. The average surface roughness values were significantly higher in all material groups in which diamond bur was applied, while roughening with Cojet provided average surface roughness values closer to the original material surface.
CONCLUSIONS
Variations in structures of the materials and roughening techniques affected the SBS and surface roughness findings.
目的
使用三维光学轮廓仪确定在去除粘接后，整体氧化锆、长石质瓷、混合瓷等正畸附件的最佳粘接方法，以及表面处理方法对粘接强度的影响。
材料和方法
将 56 个长石质瓷、56 个整体氧化锆和 56 个混合瓷样本分为四组进行表面处理：（1）氢氟酸（HF）酸蚀+硅烷处理，（2）AlO 喷砂+硅烷处理，（3）硅涂层（SiO），和（4）金刚石车针+硅烷处理。测试试件以评估剪切粘接强度（SBS）。去除粘接后，去除残余的复合树脂。使用三维白光干涉仪对表面粗糙度进行定量测量。
结果
HF 酸蚀长石质瓷组的 SBS 值最高。所有使用金刚石车针处理的材料组的平均表面粗糙度值均显著升高，而 Cojet 喷砂处理的平均表面粗糙度值更接近原始材料表面。
结论
材料结构和粗糙化技术的变化影响 SBS 和表面粗糙度的结果。
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