Jafarzadeh M, Malekafzali B, Tadayon N, Fallahi S
Assistant Professor, Department of Pediatric Dentistry, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
J Dent (Tehran). 2010 Winter;7(1):1-5. Epub 2010 Mar 31.
Long-term retention of pit and fissure sealants is crucial for their success. This clinical study evaluated the retention rate of a flowable composite resin (Filtek Supreme XT Flowable Restorative) compared to a conventional resin-based sealant (Concise Light Cure White Sealant) over 12 months.
Forty subjects aged 6 to 9 years were included in the study. Using a half-mouth design, a total of 80 first permanent molars were sealed with conventional fissure sealant on one side of the mouth and flowable composite on the contralateral side. Clinical evaluation was performed at 3, 6, and 12 months by a single blind examiner and the retention was classified as complete retention, partial loss, or total loss.
For both materials, there was no total loss of sealants over 12 months. Partial loss of both materials was observed in one sealant after 3 months. After 6 months, 36 teeth sealed with conventional fissure sealant were intact compared with 37 sealed with a flowable composite, and after 12 months, 33 teeth sealed with conventional fissure sealant were intact compared with 35 that were sealed with a flowable composite. There were no statistically significant difference (P>0.05) between the two materials regarding the retention rate at each follow-up period.
As flowable composite resulted in comparable sealant retention rates, this material could be a good choice for fissure sealant.
窝沟封闭剂的长期留存率对其成功应用至关重要。本临床研究评估了一种可流动复合树脂（Filtek Supreme XT可流动修复材料）与传统树脂基封闭剂（Concise光固化白色封闭剂）在12个月内的留存率。
40名6至9岁的受试者纳入本研究。采用半口设计，共80颗第一恒磨牙，一侧牙用传统窝沟封闭剂封闭，对侧牙用可流动复合树脂封闭。由一名单盲检查者在3个月、6个月和12个月时进行临床评估，留存情况分为完全留存、部分脱落或完全脱落。
两种材料在12个月内均无封闭剂完全脱落的情况。3个月后，有一颗封闭剂出现两种材料的部分脱落。6个月后，用传统窝沟封闭剂封闭的36颗牙完好，用可流动复合树脂封闭的为37颗；12个月后，用传统窝沟封闭剂封闭的33颗牙完好，用可流动复合树脂封闭的为35颗。两种材料在各随访期的留存率之间无统计学显著差异（P>0.05）。
由于可流动复合树脂的封闭剂留存率相当，该材料可作为窝沟封闭剂的一个良好选择。
