Parnell C A, O'Farrell M, Howell F, Hegarty M
North Eastern Health Board, Dental Clinic, Navan, Co. Meath, Ireland.
Community Dent Health. 2003 Sep;20(3):146-52.
To evaluate the fissure sealant programme operated by the North Eastern Health Board Dental Service in County Meath, Republic of Ireland. The fissure sealant programme forms part of the school dental service aimed at children in first class (age group 6-7 years).
Cross sectional study with retrospective analysis of dental records.
Schools in County Meath in 1999.
Children in fourth class (mean age 9.6 years) in the school year 1999/2000 who had participated in the fissure sealant programme in the school year 1996/97.
Sealant retention using the criteria of Simonsen.
The mean age of sealant was 2.3 years. Fifty six percent of sealants were completely retained, 27% were partially retained and 12.8% were missing. The majority (73%) of children had some sealant on at least one tooth. Caries experience in previously sealed teeth was low (2.9%). Children who had all four first permanent molars sealed had a significantly lower DMFT (visual) than those who had no sealants (Wilcoxan p < 0.0001).
Despite lack of maintenance of sealants in this study, retention rates compared favourably with similar international studies and caries experience in previously sealed teeth was low. The use of a written sealant policy and protocol for sealant application and equipment maintenance could further improve retention rates. Children who had no sealants had significantly poorer dental health than children who had all four first permanent molars sealed.
评估爱尔兰共和国米斯郡东北卫生委员会牙科服务部门开展的窝沟封闭项目。该窝沟封闭项目是学校牙科服务的一部分，目标人群为一年级儿童（6 - 7岁年龄组）。
对牙科记录进行回顾性分析的横断面研究。
1999年米斯郡的学校。
1999/2000学年四年级（平均年龄9.6岁）且在1996/97学年参加过窝沟封闭项目的儿童。
采用西蒙森标准评估窝沟封闭剂的保留情况。
窝沟封闭剂的平均使用时长为2.3年。56%的窝沟封闭剂完全保留，27%部分保留，12.8%缺失。大多数（73%）儿童至少有一颗牙齿上有窝沟封闭剂。先前进行过窝沟封闭的牙齿患龋率较低（2.9%）。四颗第一恒磨牙均进行窝沟封闭的儿童，其龋均（视觉检查）显著低于未进行窝沟封闭的儿童（威尔科克森检验，p < 0.0001）。
尽管本研究中窝沟封闭剂缺乏维护，但保留率与类似的国际研究相比仍较为有利，且先前进行过窝沟封闭的牙齿患龋率较低。采用书面的窝沟封闭政策以及窝沟封闭剂应用和设备维护方案，可能会进一步提高保留率。未进行窝沟封闭的儿童，其口腔健康状况明显比四颗第一恒磨牙均进行窝沟封闭的儿童差。
