Caries-like lesion formation around fluoride-releasing sealant and glass ionomer.
Caries-like lesion formation around Class V preparations restored with fluoride-releasing sealant, glass ionomer and conventional sealant materials was evaluated with polarized light microscopy following lesion initiation and progression periods. Significant differences (P < 0.05) were found among the three treatment groups for mean surface lesion depth following lesion initiation and progression and between the conventional sealant and fluoride-containing material groups for incremental increase in surface lesion depth following lesion progression. Surface lesion depths were significantly reduced in both the fluoride-releasing sealant and glass ionomer groups when compared with the conventional sealant group. The glass ionomer material provided the greatest degree of caries protection at the enamel-restorative interface and had the least number of wall lesions (7.5%); in contrast, the conventional sealant group had the greatest number of wall lesions (17.5%). The incorporation of fluoride from a dental material into adjacent tooth structure may provide enhanced resistance to caries initiation and progression.
Hicks
M J
MJ
Department of Oral Diagnostic Sciences, University of Texas Health Science Center at Houston, Dental Branch 77225-0068.
Flaitz
C M
CM
D003731:Dental Caries / Q000473:pathology / Q000517:prevention & control*; D005460:Fluorides, Topical / Q000008:administration & dosage*; D005899:Glass Ionomer Cements; D006801:Humans; D010895:Pit and Fissure Sealants
D005460:Fluorides, Topical; D005899:Glass Ionomer Cements; D010895:Pit and Fissure Sealants