In vitro enamel remineralization at orthodontic band margins cemented with glass ionomer cement

Kevin James Donly, Shayne Istre, Todd Istre

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


Demineralization adjacent to orthodontic bands remains a clinical concern. The release of fluoride from glass ionomer cement has been shown to inhibit demineralization. The purpose of this study was to examine the remineralization effects of a glass ionomer cement adjacent to orthodontic bands. Forty extracted molars were painted with an acid-protective varnish, excluding a 2 × 6 mm window on the buccal surfaces. Artificial caries-like lesions were created in the exposed enamel with an acidified gel. Half the lesion on each tooth was then painted with an acid-protective varnish. An orthodontic band was cemented with a glass ionomer cement or zinc phosphate cement, the gingival margin of the band located at the level of the artificial carious lesion. The teeth were placed in separate closed environments of a nonfluoridated artificial saliva for 3 months. The teeth were then sectioned and photographed with polarized light microscopy in imbibition medias of water and Thoulet's (R.I.: 1.41, 1.47), representing a minimum of 5%, 10%, and 25% pore volume, respectively. With a sonic digitizer, the area of the body of the lesion was measured in each imbibition media, comparing the maintained varnished out lesions to the lesions exposed to the cement. Results demonstrated a statistically significant reduction in the body of the lesions (p < 0.005) for those exposed to the glass ionomer cement. (AM J ORTHOD DENTOFAC ORTHOP 1995;107:461-4.).

Original languageEnglish (US)
Pages (from-to)461-464
Number of pages4
JournalAmerican Journal of Orthodontics and Dentofacial Orthopedics
Issue number5
StatePublished - May 1995
Externally publishedYes

ASJC Scopus subject areas

  • Orthodontics


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