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Clinical assessment of glass ionomer/composite resin sealant restorations in permanent teeth: results of a field trial after 1 year.

A large field trial is in progress in the Community Dental Service in the West of Scotland to evaluate the effectiveness of glass ionomer/composite resin sealant restorations in the treatment of fissure caries. 128 of the restorations were placed by 14 community dental officers. After 1 year, 98 restorations were reviewed. All of the glass ionomer restorations were retained but only 12 of the sealants were completely intact. Sealant was retained over only 32% of the restorations and in 13%, 48% and 69% of adjacent buccal, occlusal and palatal fissures, respectively.