Bagramian R A, Srivastava S, Graves R C
J Am Dent Assoc. 1979 Jan;98(1):46-50. doi: 10.14219/jada.archive.1979.0001.
Sealant retention varied according to site of the tooth. Figures for intact sealant were particularly low for permanent first molars among first graders and for permanent second molars among sixth graders at the end of three years. Although a large percentage of these teeth needed sealant reapplications, the percentages of teeth that were lost to caries were as low as 12.2% and 12.8%, respectively. Deciduous molars had the best rate (60.9%) of complete retention and also the highest percentage (20.2%) of loss caused by caries. However, in sixth graders, the premolars had the highest percentage (46.7%) of complete retention and, at the same time, the lowest caries rate (5.6%). The sealant retention pattern has remained the same during the three-year period.
窝沟封闭剂的保留情况因牙齿部位而异。一年级学生的恒牙第一磨牙以及六年级学生的恒牙第二磨牙在三年期末时完整窝沟封闭剂的留存率特别低。尽管这些牙齿中有很大比例需要重新进行窝沟封闭，但患龋丢失的牙齿比例分别低至12.2%和12.8%。乳牙磨牙的完全保留率最高（60.9%），同时因龋齿导致的丢失率也最高（20.2%）。然而，在六年级学生中，前磨牙的完全保留率最高（46.7%），同时患龋率最低（5.6%）。在这三年期间，窝沟封闭剂的保留模式保持不变。
