Chaitra T R, Subba Reddy V V, Devarasa G M, Ravishankar T L
Department of Pedodontics and Preventive Dentistry, Kothiwal Dental College and Research Centre, Moradabad, Uttar Pradesh, India.
J Indian Soc Pedod Prev Dent. 2010 Jul-Sep;28(3):145-50. doi: 10.4103/0970-4388.73786.
Preventive procedures using pit and fissure sealants are one of the most important aspects of pediatric dental practice. The objectives of this in vitro study were to comparatively evaluate microleakage of a flowable resin used as a sealant on molars after preparation with conventional, enameloplasty and fissurotomy techniques.
A total of 24 teeth were divided into three groups of eight samples each. Pits and fissures were prepared with conventional sealant technique (CST) (Group A), enameloplasty sealant technique (EST) (Group B) and fissurotomy technique (FT) (Group C). Following sealant placement, thermocycling and sectioning of samples of Groups A, B and C were performed and microleakage was assessed under a stereomicroscope after methylene blue dye immersion.
There was significantly lesser microleakage in EST when compared with CST and FT, which showed more microleakage. No statistical significance between CST and FT was found.
EST has proven to be an excellent method of preparation of pits and fissures when flowable composite is used as a sealant because of its lesser microleakage.
使用窝沟封闭剂的预防性操作是儿童牙科实践的重要方面之一。本体外研究的目的是比较评估在使用传统技术、牙釉质成形术和 fissurotomy 技术制备磨牙后，用作封闭剂的可流动树脂的微渗漏情况。
总共 24 颗牙齿被分为三组，每组八个样本。窝沟用传统封闭剂技术（CST）（A 组）、牙釉质成形术封闭剂技术（EST）（B 组）和 fissurotomy 技术（FT）（C 组）进行制备。在放置封闭剂后，对 A、B 和 C 组的样本进行热循环和切片处理，并在亚甲蓝染料浸入后在体视显微镜下评估微渗漏情况。
与 CST 和 FT 相比，EST 的微渗漏明显更少，CST 和 FT 的微渗漏更多。CST 和 FT 之间未发现统计学差异。
由于其微渗漏较少，当使用可流动复合树脂作为封闭剂时，EST 已被证明是一种制备窝沟的优秀方法。
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