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Inhibition of artificial secondary caries by fluoride – releasing restorative materials

Authors: Tara A. Al-Qutib --- Adel F. Ibraheem
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2006 Volume: 18 Issue: 1 Pages: 6-11
Publisher: Baghdad University جامعة بغداد

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Abstract

ABSTRACT
Background: Fluoride releasing restorative materials was developed to reduce the possibility of secondary caries. This study aims to examine the effects of fluoride-releasing restorative materials on the inhibition of artificial caries-around restorations.
Materials and Methods: The materials used in this study are conventional Glass-ionomer cement (Kavitan plus), Modified resin glass ionomer cement (photac-fill quick), compomer (Dyract), fluoride-releasing resin composite (crystal Essence) and Spectrum composite without fluoride (Dentsply). Forty extracted human mandibular and maxillary premolars were used and standardized CL V cavities were prepared in buccal and lingual aspects of each tooth, the lingual cavities were restored with each of the fluoride-releasing materials while the buccal cavities were restored with Spectrum Dentsply composite act as a control according to the manufacturer's instructions. The restored teeth were incubated in the acidified gelatin gel at 4.0pH, and the artificial secondary lesion created around the restoration was observed by using poloraide light microscope.
Results: Glass ionomer cement created a thick-radio-opaque zone in the artificial lesion along the restorations-dentin interface, while the fluoride-releasing composite created a thin radio-opaque zone due to the formation of acid-resistance zone by bonding infiltration.
Conclusion: Fluoride-releasing restorative materials including conventional Glass-ionomer cement (GIC), Modified resin glass ionomer cement (RMGIC), compomer, and fluoride-releasing resin composite have the potential to inhibit secondary caries formation around restorations and the conventional GIC have a stronger effect than other material.
Keywords: Artificial caries, fluoride. (J Bagh Coll Dentistry 2006; 18(1) 6-11)

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