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Abstract
Introduction and aimDental caries is the global burden worldwide and has a negative effect on the quality of life. Restorative materials in pediatric dentistry have shown satisfactory properties; however, the highest failures are still reported due to the occurrence of secondary caries. The article aims to assess the effectiveness of pre-treatment with nano-silver fluoride (NSF) in inhibiting secondary caries at the tooth restoration interface.Materials and methodsForty tooth specimens were prepared from 20 newly extracted human premolar teeth by sectioning the tooth mesiodistally. Class V cavities were prepared on each specimen at enamel dentin junction. Specimens were randomly distributed into four groups (n=10): 1) glass ionomer cement (GIC) restoration, 2) composite restoration 3) NSF pre-treatment + GIC restoration, 4) NSF pre-treatment + composite restoration. After sterilization, specimens were subjected to artificial caries formation by pH cycling method for 14 days. Specimens were sectioned and mounted to evaluate the demineralization by using the Vickers microhardness test. Outer lesion depth was measured at the tooth restoration interface on digital radiographs. Data was analyzed using Student unpaired t-test, one-way ANOVA, and Tukey honestly significant difference (HSD) post hoc test.ResultsThe mean microhardness value of pre-treated GIC and composite group with NSF was more than the non-treated NSF group, with a significant difference at the enamel, indicating lesser demineralization. Outer lesion depth was lesser in the pre-treated group showing better tooth restoration integrity with a statistically significant difference between the groups.ConclusionPre-treatment with NSF is beneficial in increasing the resistance of GIC and composite resin restoration to secondary caries formation.
Highlights
Introduction and aimDental caries is the global burden worldwide and has a negative effect on the quality of life
The mean microhardness value of pre-treated glass ionomer cement (GIC) and composite group with nano-silver fluoride (NSF) was more than the nontreated NSF group, with a significant difference at the enamel, indicating lesser demineralization
Outer lesion depth was lesser in the pre-treated group showing better tooth restoration integrity with a statistically significant difference between the groups
Summary
Introduction and aimDental caries is the global burden worldwide and has a negative effect on the quality of life. The article aims to assess the effectiveness of pretreatment with nano-silver fluoride (NSF) in inhibiting secondary caries at the tooth restoration interface. Systematic review and meta-analysis on silver diamine fluoride (SDF) have proved its ability to arrest carious progression and to prevent the occurrence of a new carious lesion in children [5, 6]. SDF, when applied on the tooth surface, leads to bacterial killing, preventing biofilm formation. It leads to the conversion of hydroxyapatite crystals to fluorapatite crystals, which are more resistant to demineralization. A new experimental formulation, nano-silver fluoride (NSF), was prepared using silver nanoparticles, chitosan, and fluoride. It has both preventive and antimicrobial properties like SDF and
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