Simonsen R J
3M Company, Dental Products Division, St. Paul, MN 55144-1000.
J Am Dent Assoc. 1991 Oct;122(10):34-42. doi: 10.14219/jada.archive.1991.0289.
This landmark study of a pit and fissure sealant found 27.6 percent complete retention and 35.4 percent partial retention on permanent first molars. In the matched pair analysis, carious or restored surfaces made up 31.3 percent of the surfaces in the sealed group and 82.8 percent in the unsealed group.
这项关于窝沟封闭剂的具有里程碑意义的研究发现，在恒牙第一磨牙上，完全保留率为27.6%，部分保留率为35.4%。在配对分析中，密封组中龋坏或已修复的表面占31.3%，未密封组中占82.8%。
