Sodium Hypochlorite Before Resin Varnish Fails to Impact Microhardness, Surface Roughness or Microleakage, Finds Study
Turkiye: Researchers have found in a new study that the use of 5.25% sodium hypochlorite (NaOCl) before resin infiltration or resin varnish did not impact microhardness, surface roughness, DIAGNOdent Pen readings, or microleakage. However, resin infiltration outperformed resin varnish in reducing microleakage and DIAGNOdent Pen scores, regardless of NaOCl application. The findings were published online in the Journal of Dentistry on February 20, 2025.
Enamel demineralization occurs when hydroxyapatite (HA) crystals dissolve due to acidic pH, leading to the loss of calcium and phosphate ions. This process, driven by cariogenic bacteria digesting carbohydrates, increases hydrogen ion concentration in plaque, which diffuses through enamel pores and affects HA crystals in subsurface regions.
Against the above background, Bengü Doğu Kaya, Marmara University Faculty of Dentistry, Department of Restorative Dentistry, Istanbul, Türkiye, and colleagues aimed to evaluate the effect of 5.25% NaOCl application before resin infiltration and resin varnish on microhardness, surface roughness, and DIAGNOdent Pen values in the treatment of white spot lesions (WSLs) through an in vitro study.
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