TY - JOUR T1 - Resin-modified glass-ionomer restorations and in vitro secondary caries formation in coronal enamel. AU - Hicks,M J, AU - Flaitz,C M, PY - 2001/2/24/pubmed PY - 2001/3/27/medline PY - 2001/2/24/entrez SP - 570 EP - 8 JF - Quintessence international (Berlin, Germany : 1985) JO - Quintessence Int VL - 31 IS - 8 N2 - OBJECTIVE: The purpose of this laboratory study was to compare the effects of a resin-modified glass ionomer and a resin composite restorative material on secondary caries formation in coronal enamel. METHOD AND MATERIALS: Twelve caries-free molars were sectioned into tooth quarters. Coronal cavities were prepared and then restored with either a resin-modified glass-ionomer material (mesiobuccal and mesiolingual tooth quarters), or a resin composite (distobuccal and distolingual tooth quarters). Caries like lesions were created, and secondary caries was examined by polarized light microscopy following lesion initiation and progression periods. RESULTS: The resin-modified glass-ionomer specimens had significantly shallower primary surface lesions at both the lesion initiation (35% shallower) and progression (45% shallower) periods than did the resin composite specimens. There were significantly fewer wall lesions (3-fold and 2-fold fewer following lesion initiation and progression, respectively) in the resin-modified glass-ionomer group than in the resin composite group. CONCLUSION: Resin-modified glass-ionomer restorations reduce the susceptibility of unrestored adjacent enamel surfaces and cavosurfaces to a constant cariogenic challenge. The caries resistance imparted to the surface enamel and cavosurface is most likely due to the fluoride release from the resin-modified glass-ionomer material. SN - 0033-6572 UR - https://www.unboundmedicine.com/medline/citation/11203979/Resin_modified_glass_ionomer_restorations_and_in_vitro_secondary_caries_formation_in_coronal_enamel_ L2 - https://medlineplus.gov/toothdecay.html DB - PRIME DP - Unbound Medicine ER -