含血管收缩剂的局部麻醉对两种粘结系统牙本质封闭能力的影响：染料渗漏及扫描电子显微镜研究
Effect of local anesthesia containing vasoconstrictor on sealing ability of dentin with two adhesive systems: Dye leakage and scanning electron microscopy study.
作者信息
Singla Rakesh, Tewari Sanjay, Duhan Jigyasa, Kumar Sudhir, Gill Gurdeep Singh, Jain Namita
机构信息
Department of Conservative Dentistry and Endodontics, JCD Dental College, Sirsa, Haryana, India.
Department of Conservative Dentistry and Endodontics, Government Dental College, PGIMS, Rohtak, Haryana, India.
出版信息
J Conserv Dent. 2018 May-Jun;21(3):339-343. doi: 10.4103/JCD.JCD_409_16.
OBJECTIVES
To evaluate the effect of 2% lignocaine containing 1:80,000 adrenaline on the microleakage and ultrastructure of resin tooth interface using an acetone based total etch adhesive (Prime and Bond NT) and an ethanol water based self etch adhesive system (Xeno III).
MATERIALS AND METHOD
Class V cavities were prepared on buccal surfaces of 72 maxillary first premolars scheduled for orthodontic extraction. In 36 premolars procedure was performed under local anaesthesia (LA) and in other 36 teeth without LA. Restorations were done with hybrid composite Spectrum TPH using either Prime and Bond NT or Xeno III bonding agents.
RESULTS
Administration of 2% lignocaine with 1:80,000 adrenaline significantly reduced microleakage and improved quality of hybrid layer and tubular penetration in Prime and Bond NT specimens; but no significant effect was observed in Xeno III specimens.
CONCLUSION
Under clinical conditions, administration of LA reduced microleakage and improved quality of hybrid layer and tubular penetration in total etch adhesive systems.
目的
使用丙酮基全酸蚀粘接剂（Prime and Bond NT）和乙醇 - 水基自酸蚀粘接系统（Xeno III），评估含1:80,000肾上腺素的2%利多卡因对树脂 - 牙齿界面微渗漏及超微结构的影响。
材料与方法
在计划正畸拔除的72颗上颌第一前磨牙的颊面制备V类洞。36颗前磨牙在局部麻醉（LA）下进行操作，另外36颗牙齿未进行局部麻醉。使用Prime and Bond NT或Xeno III粘接剂，用混合型复合树脂Spectrum TPH进行修复。
结果
含1:80,000肾上腺素的2%利多卡因显著降低了Prime and Bond NT样本中的微渗漏，并改善了混合层质量和牙本质小管渗透情况；但在Xeno III样本中未观察到显著影响。
结论
在临床条件下，局部麻醉可减少全酸蚀粘接系统中的微渗漏，并改善混合层质量和牙本质小管渗透情况。
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