Different bonding agents effect on adhesive bond strength: lithium disilicate glass ceramic

Abstract Introduction The silanization of the ceramic surface prior to applying the adhesive and/or resinous materials plays an important role in bond strength. Nowadays, a new family of adhesive systems has been introduced into the market, aiming to simplify the technique of adhesive procedures during cementation. Objective To investigate the effectiveness of different bonding agents containing silane and primer on Lithium Disilicate Glass Ceramic (LD) surface by shear bond strength tests. Material and method 130 LD ceramic blocks were included in acrylic resin, polished and washed in ultrasound for 10 minutes. The specimens were divided into 2 groups according to surface treatment: Polished Surface (PS); Hydrofluoric Acid 9.5% - 20s (HF). Each group was divided into 5 subgroups (n = 13) according to bonding agent type: metallic primer containing MDP (ZPrimePlus, Bisco Inc); two traditional silanes (MonobondPlus, IvoclarVivadent / Porcelain Prime, Bisco Inc.); mixture of silane and resin (Kerr Silane, Kerr); mixture of silane and universal adhesive (Single-bond Universal, 3M Espe). The specimens were mounted in a standard device for shear testing (UltradentBonding Assembly), cemented with dual resin cement (RelyX UltimateTM, 3M Espe.) and photo-polymerized for 20s. The samples were tested after 24 hours and 3 months of storage in distilled water at ±36 °C. The data were analyzed by 3-Way Anova and Tukey's test (α = 5%). Result Shear bond strength (SBS) was significantly influenced by surface treatment, bonding agent used and storage (p <0.001). Conclusion Adequate adhesive bond strength to Lithium Disilicate Glass Ceramic can be obtained with traditional silanes, combined with HF acid pretreatment surface.

摘要：在使用粘结剂及/或树脂类材料前对陶瓷表面实施硅烷化处理，对粘结强度具有关键作用。目前，一类新型粘结系统已推向市场，旨在简化粘结操作流程。
目的 本研究通过剪切粘结强度测试，探究不同含硅烷与底涂剂的粘结剂对二硅酸锂玻璃陶瓷（Lithium Disilicate Glass Ceramic, LD）表面的粘结效果。
材料与方法 将130块LD陶瓷块包埋于丙烯酸树脂中，经抛光后超声清洗10分钟。根据表面处理方式将试件分为2组：抛光表面组（Polished Surface, PS）；9.5%氢氟酸处理20秒组（Hydrofluoric Acid 9.5% - 20s, HF）。每组再依据粘结剂类型分为5个亚组（n=13）：含MDP的金属底涂剂（ZPrimePlus，Bisco公司）；两种传统硅烷偶联剂（MonobondPlus，IvoclarVivadent（义获嘉伟瓦登特）/ Porcelain Prime，Bisco公司）；硅烷与树脂的混合物（Kerr Silane，Kerr公司）；硅烷与通用粘结剂的混合物（Single-bond Universal，3M Espe公司）。将试件安装于标准剪切测试夹具（Ultradent粘结组件）中，采用双固化树脂水门汀（RelyX Ultimate™，3M Espe公司）进行粘结，并光固化20秒。所有试件分别在±36℃的蒸馏水中储存24小时及3个月后，进行剪切粘结强度测试。采用三因素方差分析与Tukey检验进行数据分析，检验水准α=5%。
结果 剪切粘结强度（Shear Bond Strength, SBS）显著受表面处理方式、所用粘结剂类型及储存条件的影响（p<0.001）。
结论 采用传统硅烷偶联剂联合氢氟酸表面预处理，可获得二硅酸锂玻璃陶瓷的理想粘结强度。