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首页> 外文期刊>Journal of dentistry >Shear bond strength of porcelain laminate veneers to enamel, dentine and enamel-dentine complex bonded with different adhesive luting systems
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Shear bond strength of porcelain laminate veneers to enamel, dentine and enamel-dentine complex bonded with different adhesive luting systems

机译：烤瓷贴面与不同胶粘剂粘结体系对牙釉质，牙本质和牙釉质-牙本质复合物的剪切粘结强度

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Objectives: The aim of this study was to evaluate the shear bond strength of porcelain laminate veneers to 3 different surfaces by means of enamel, dentine, and enamel-dentine complex. Methods: One hundred thirty-five extracted human maxillary central teeth were used, and the teeth were randomly divided into 9 groups (n = 15). The teeth were prepared with 3 different levels for bonding surfaces of enamel (E), dentine (D), and enamel-dentine complex (E-D). Porcelain discs (IPS e.max Press, Ivoclar Vivadent) of 2 mm in thickness and 4 mm in diameter were luted to the tooth surfaces by using 2 light-curing (RelyX Veneer [RV], 3M ESPE; Variolink Veneer [VV], Ivoclar Vivadent) and a dual-curing (Variolink II [V2], Ivoclar Vivadent) adhesive systems according to the manufacturers' instructions. Shear bond strength test was performed in a universal testing machine at 0.5 mm/min until bonding failure. Failure modes were determined under a stereomicroscope, and fracture surfaces were evaluated with a scanning electron microscope. The data were statistically analysed (SPSS 17.0) (p = 0.05). Results: Group RV-D exhibited the lowest bond strength value (5.42 ?? 6.6 MPa). There was statistically no difference among RV-D, V2-D (13.78 ?? 8.8 MPa) and VV-D (13.84 ?? 6.2 MPa) groups (p > 0.05). Group VV-E exhibited the highest bond strength value (24.76 ?? 8.8 MPa). Conclusions: The type of tooth structure affected the shear bond strength of the porcelain laminate veneers to the 3 different types of tooth structures (enamel, dentine, and enamel-dentine complex). Clinical significance: When dentine exposure is necessary during preparation, enough sound enamel must be protected as much as possible to maintain a good bonding; to obtain maximum bond strength, preparation margins should be on sound enamel. ? 2012 Elsevier Ltd. All rights reserved.
机译：目的：本研究的目的是通过牙釉质，牙本质和牙釉质-牙本质复合物评估陶瓷层压板在3个不同表面上的剪切粘结强度。方法：使用一百三十五个拔出的人类上颌中央牙齿，将牙齿随机分为9组（n = 15）。准备了3种不同含量的牙齿，用于粘结牙釉质（E），牙本质（D）和牙釉质-牙本质复合物（E-D）。通过使用2种光固化剂（RelyX饰面[RV]，3M ESPE; Variolink饰面[VV]）将厚度为2毫米，直径为4毫米的瓷片（IPS e.max Press，Ivoclar Vivadent）浸入牙齿表面根据制造商的说明使用Ivoclar Vivadent）和双固化（Variolink II [V2]，Ivoclar Vivadent）粘合剂体系。在万能试验机中以0.5mm / min的速度进行剪切粘合强度测试，直到粘合失败。在立体显微镜下确定失效模式，并用扫描电子显微镜评估断裂表面。对数据进行统计分析（SPSS 17.0）（p = 0.05）。结果：RV-D组表现出最低的结合强度值（5.42≤6.6MPa）。 RV-D，V2-D（13.78≤8.8 MPa）和VV-D（13.84≤6.2 MPa）组之间的统计学差异无统计学意义（p> 0.05）。 VV-E组表现出最高的结合强度值（24.76≤8.8 MPa）。结论：牙齿结构的类型影响烤瓷贴面对三种不同类型牙齿结构（牙釉质，牙本质和牙釉质-牙本质复合物）的抗剪粘结强度。临床意义：在准备过程中需要暴露牙本质时，必须尽可能保护足够的牙釉质，以保持良好的粘合力。为了获得最大的粘合强度，应在健全的瓷漆上留有准备裕量。 ？ 2012 Elsevier Ltd.保留所有权利。

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