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  • Title: Effects of disinfectant agents on microleakage in primary tooth-colored restorations: an in vitro study.
    Author: Memarpour M, Shafiei F, Moradian M.
    Journal: J Dent Child (Chic); 2014; 81(2):56-62. PubMed ID: 25198946.
    Abstract:
    PURPOSE: To determine the effect of disinfectant agents on microleakage in primary teeth restored with composite resin (CR) and glass ionomer (GI). METHODS: Class V cavities were prepared in 140 sound canine teeth randomly divided into two main groups (A and B) and seven subgroups (n=20). In group A, 60 cavities were restored with CR after pretreatment with 1) phosphoric acid etching + Adper Single-Bond 2; 2) acid etching + chlorhexidine digluconate + Adper SingleBond 2; and 3) Clearfil Protect Bond. In group B, 80 cavities were restored with GI after pretreatment with 4) conditioner; 5) conditioner + chlorhexidine digluconate; 6) conditioner + Clearfil Protect Bond; and 7) Clearfil Protect Bond. After thermocycling, the samples were placed in 0.5 percent fuchsin dye, sectioned, and evaluated under a digital microscope. Statistical analysis was done using Kruskal-Wallis and Mann-Whitney tests. RESULTS: There were statistically significant differences between subgroups (P<.05). Subgroup 1 showed the least microleakage in Group A. Subgroups 6 and 7 had the least microleakage, followed by subgroups 4 and 5 in Group B. CONCLUSIONS: Applying chlorhexidine digluconate and Clearfil Protect Bond increased microleakage in CR restorations. However, Clearfil Protect Bond did not adversely affect marginal sealing in GI restorations, which makes it an alternative pretreatment method for these restorations.
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