Adyanthaya Bannampalli Rohithashwa, Gazal Shaista, Mathur Meetu, Srivastava Aastha, Meena Susheel Kumar
Department of Conservative Dentistry and Endodontics, Rajasthan Dental College & Hospital, Jaipur, Rajasthan, India.
Int J Clin Pediatr Dent. 2022 Sep-Oct;15(5):525-528. doi: 10.5005/jp-journals-10005-2422.
To compare and evaluate the shear bond strength of sixth and seventh-generation dentin bonding agents.
Around 75 extracted permanent mandibular premolars were selected and assigned into two groups. The samples were cleaned, cavities were prepared, and the bonding agent was applied and stored in distilled water for 24 hours. Shear bond strength testing was done using a universal testing machine at the crosshead speed of 1 mm/minute. Data were analyzed statistically by one-way analysis of variance (ANOVA) and paired test.
The greatest mean shear bond strength to dentin was exhibited by the sixth-generation dentin bonding agent due to the solvent present, which has a low concentration and low hydrophilicity than the seventh-generation.
Sixth-generation adhesives showed significantly higher mean shear bond strength to dentin than seventh-generation adhesives.
Bond strength values are gross assessing tools for evaluating the efficacy of restorative bonding materials to dentin. And as the shear bond strength is less technique sensitive to perform, it will highlight the strength at the bonded interface.
Adyanthaya BR, Gazal S, Mathur M, To Compare and Evaluate the Shear Bond Strength of Sixth- and Seventh-generation Bonding Agents. Int J Clin Pediatr Dent 2022;15(5):525-528.
比较和评估第六代和第七代牙本质粘结剂的剪切粘结强度。
选取约75颗拔除的下颌恒前磨牙并分为两组。对样本进行清洁、制备窝洞、应用粘结剂并在蒸馏水中储存24小时。使用万能试验机以1毫米/分钟的十字头速度进行剪切粘结强度测试。数据采用单因素方差分析（ANOVA）和配对检验进行统计学分析。
由于第六代牙本质粘结剂中存在的溶剂，其对牙本质的平均剪切粘结强度最高，该溶剂浓度低且亲水性低于第七代粘结剂。
第六代粘结剂对牙本质的平均剪切粘结强度显著高于第七代粘结剂。
粘结强度值是评估修复性粘结材料与牙本质粘结效果的粗略评估工具。而且由于剪切粘结强度在操作上对技术的敏感性较低，它将突出粘结界面处的强度。
Adyanthaya BR, Gazal S, Mathur M, 比较和评估第六代和第七代粘结剂的剪切粘结强度。《国际临床儿科学牙科杂志》2022年；15(5):525 - 528。
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