Influence of Er;Cr:YSGG Laser on Shear Bond Strength and Color Stability of Lithium Disilicate Ceramics: An In Vitro Study
Influence of Er;Cr:YSGG Laser on Shear Bond Strength and Color Stability of Lithium Disilicate Ceramics: An In Vitro Study
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DOI：
10.1089/photob.2018.4582
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发表时间：
2019-08-01
影响因子：
1.8
通讯作者：
Naseem, Mustafa
中科院分区：
文献类型：
--
作者：
Vohra, Fahim;Labban, Nawaf;Naseem, Mustafa
目的：本研究的目的是评估Er;Cr：YSGG激光参数（功率和频率）对二硅酸锂（LD）陶瓷结合强度和颜色稳定性的影响。根据表面处理类型[氢氟酸（HF）、L1 S、L2 S、L1 D和L2 D]，将50个磁盘随机分为5组。对于所有激光处理组，使用MZ 10尖端（Er;Cr：YSGG，水激光I plus; Biolase）的金色手机使用粘合准备设置。在表面处理之后，施加粘合剂粘结，并且在光聚合之后，进行复合物堆积。为了评价剪切粘结强度，使用万能试验机施加受控力直至失效。通过CIE L*a*B* 系统评估了六组LD陶瓷（色度A1，LT半透明）的颜色稳定性（HF、L1 S、L2 S、L1 D、L2 D和对照）。从六组中随机选择三个样本，使用扫描电子显微镜进行表面形貌评估。使用方差分析和Tukey事后检验比较平均值和标准差（p
Objective: The aim of this study was to assess the effect of Er;Cr:YSGG laser parameters (power and frequency) on the bond strength and color stability of lithium disilicate (LD) ceramics.Materials and methods: One hundred ten specimens of LD ceramic were fabricated following heat pressed technique. Fifty disks were randomly distributed into five groups according to types of surface treatment [hydrofluoric (HF) acid, L1S L2S, L1D, and L2D]. For all laser-treated groups, bond preparation settings were used with a gold hand piece using a MZ10 tip (Er;Cr:YSGG, water lase I plus; Biolase). After surface treatment, adhesive bond was applied, and after photopolymerization, a composite buildup was performed. To evaluate shear bond strength, a controlled force was applied until failure using a universal testing machine. Color stability was assessed for six groups (HF, L1S L2S, L1D, L2D, and control) of LD ceramic (shade A1, LT translucency) through the CIE L*a*b* system. Three specimens from each of the six groups were selected randomly for assessment of surface topography using scanning electron microscopy. Means and standard deviations were compared using analysis of variance and Tukey's post hoc test (p