title: A clinical comparison of sealant and amalgam in the treatment of pits and fissures. 1. Clinical performance after 18 months.
mesh_terms: D002648:Child; D003723:Dental Amalgam; D003731:Dental Caries / Q000517:prevention & control / Q000628:therapy*; D005069:Evaluation Studies as Topic; D006801:Humans; D008137:Longitudinal Studies; D010895:Pit and Fissure Sealants / Q000627:therapeutic use*
chemical_list: D010895:Pit and Fissure Sealants; D003723:Dental Amalgam