Khoroushi Maryam, Eshghi Alireza, Naderibeni Fatemeh
Dental Materials Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
Department of Pediatric Dentistry, Shahrekord, Chaharmahal and Bakhtiari University of Medical Sciences, Isfahan, Iran.
J Dent Child (Chic). 2016 Sep 15;83(3):132-138.
Alumina air abrasion is an alternative for acid-etch technique for tooth preparation before placement of a fissure sealant. The aim of this study was to compare the retention of sealants placed subsequent to air abrasion with alumina and bioactive glass (BAG) particles.
Sixty-two 6-12 year old children were included in this study. Using a halfmouth design, the fissures were prepared using air abrasion with alumina particles on randomly assigned permanent mandibular or/and maxillary first molars on one side of the mouth (Group 1) and air abrasion with BAG on the contralateral side of the mouth (Group 2). Sealants were applied on 180 teeth, and were scored as missing, partially retained, and completely retained after three, six, nine and 12 months. Data were analyzed using Friedman and Wilcoxon tests (α=0.05).
Sealant retention rates in the alumina group were higher than those in the BAG group at all time periods (P<0.001).
Sealant retention after air abrasion with alumina particles was higher than BAG over 12 months.
在放置窝沟封闭剂之前，氧化铝气磨是一种替代酸蚀技术用于牙齿预备的方法。本研究的目的是比较在使用氧化铝颗粒和气溶胶玻璃（BAG）颗粒进行气磨后放置的封闭剂的保留率。
本研究纳入了62名6至12岁的儿童。采用半口设计，在随机分配的一侧下颌或/和上颌第一恒磨牙上使用氧化铝颗粒进行气磨制备窝沟（第1组），在口腔对侧使用BAG进行气磨（第2组）。在180颗牙齿上应用封闭剂，并在3、6、9和12个月后对封闭剂进行评分，分为缺失、部分保留和完全保留。使用Friedman和Wilcoxon检验分析数据（α=0.05）。
在所有时间段，氧化铝组的封闭剂保留率均高于BAG组（P<0.001）。
在12个月内，使用氧化铝颗粒进行气磨后的封闭剂保留率高于BAG。
