Patanjali Shagun, Arora Anshul, Arya Ashtha, Grewal Mandeep S
Department of Pedodontics and Preventive Dentistry, Faculty of Dental Sciences, SGT University, Gurugram, Haryana, India.
Department of Conservative Dentistry and Endodontics, SGT University, Gurugram, Haryana, India.
Int J Clin Pediatr Dent. 2019 May-Jun;12(3):205-210. doi: 10.5005/jp-journals-10005-1623.
This study evaluated the effect of beveling of enamel on microleakage and shear bond strength of total-etch adhesive system: prime and bond NT and self-etch: adhesive system: XENO V in primary and permanent teeth.
A total of 120 extracted human molars (60 primary and 60 permanent) were selected for the study. For microleakage examination, a sample size of 40 was chosen. Two rectangular slots of equal dimensions were prepared on the buccal surface of each tooth and a bevel was given on either of the slots. Each slot was restored using a composite resin with prior application of the selected bonding agent following which all the samples were soaked in 1% methylene blue dye for 48 hours. Then each tooth was sectioned horizontally and evaluated. The remaining 80 samples were subjected to the shear bond strength test. Class II cavities of standard dimension were prepared and bevel was given on each sample following which selected bonding agent was applied and restored with a composite resin. The specimens were placed in a fixture and the shear bond strength was determined using the universal testing machine.
With respect to microleakage, the least was exhibited by beveled preparations in permanent teeth using the self-etch adhesive system and the highest shear bond strength was exhibited by beveled preparations using the total-etch adhesive system in permanent teeth.
Beveling of enamel improved the marginal integrity and shear bond strength of self-etch and total-etch adhesive systems in both primary and permanent teeth.
Patanjali S, Arora A, An Study of Effect of Beveling of Enamel on Microleakage and Shear Bond Strength of Adhesive Systems in Primary and Permanent Teeth. Int J Clin Pediatr Dent 2019;12(3):205-210.
本研究评估了釉质斜面预备对全酸蚀粘结系统（Prime and Bond NT）和自酸蚀粘结系统（XENO V）在乳牙和恒牙中的微渗漏及剪切粘结强度的影响。
本研究共选取120颗拔除的人磨牙（60颗乳牙和60颗恒牙）。对于微渗漏检查，选取40个样本。在每颗牙齿的颊面制备两个尺寸相等的矩形窝洞，其中一个窝洞进行斜面预备。每个窝洞在预先涂抹所选粘结剂后，用复合树脂修复，之后所有样本在1%亚甲蓝染料中浸泡48小时。然后将每颗牙齿水平切开并进行评估。其余80个样本进行剪切粘结强度测试。制备标准尺寸的II类洞型，每个样本进行斜面预备，随后涂抹所选粘结剂并用复合树脂修复。将标本置于夹具中，使用万能试验机测定剪切粘结强度。
关于微渗漏，恒牙中使用自酸蚀粘结系统且进行斜面预备的样本微渗漏最少；恒牙中使用全酸蚀粘结系统且进行斜面预备的样本剪切粘结强度最高。
釉质斜面预备改善了乳牙和恒牙中自酸蚀及全酸蚀粘结系统的边缘完整性和剪切粘结强度。
Patanjali S, Arora A. 釉质斜面预备对乳牙和恒牙粘结系统微渗漏及剪切粘结强度影响的研究。《国际临床儿科牙科学杂志》2019；12(3)：205 - 210。
