Abstract
Objective: To evaluate the use of nanosilver fluoride in the enamel remineralization process through optical coherence tomography. Material and Methods: All samples were submitted to demineralization process by pH cycling during 14 days and randomly distributed into three groups (n = 11): Nanosilver Fluoride (NSF), Sodium fluoride (NaF), and negative control. Optical coherence tomography images were acquired at three different moments: initial stage (T0), post caries formation (T1), and post pH cycling (T2). The integrity of the enamel surface and the measurement of the volume loss for the tissue after pH cycling in comparison to initial images were obtained from optical coherence tomography images. Results: After analyzing the exponential decay of A-scans from each group, it was possible to identify differences in light propagation among samples. In T1 it is not possible to visualize the dentin-enamel junction, probably due to the higher back scattering of the demineralized enamel, which does not allow light to reach the dentin. The decay curves obtained from NaF and nanosilver fluoride groups showed similar behavior, while the negative group showed lower extinction coefficient. Conclusion: Nanosilver fluoride showed the best effect against caries compared to conventional fluoride treatments.
Highlights
Dental caries is the most prevalent disease of the oral cavity
Material and Methods: All samples were submitted to demineralization process by pH cycling during 14 days and randomly distributed into three groups (n = 11): Nanosilver Fluoride (NSF), Sodium fluoride (NaF), and negative control
Nakajima et al To evaluate SS-optical coherence tomography (OCT) (1,330 nm) for use as a diagnostic The results indicate that SS-OCT was able tool for occlusal caries in deciduous teeth as compared to diagnose caries in primary teeth
Summary
Dental caries is the most prevalent disease of the oral cavity. It occurs due to the demineralization of tooth surfaces by the action of organic acids that originate from the fermentation of carbohydrates by bacteria and organic matrix degradation [1].Importantly, deciduous teeth have greater permeability, lower bond strength to dental adhesive materials, and lower microhardness when compared to permanent teeth [2]. The presence of a thick aprismatic layer in the deciduous enamel at its outermost surface [4] and the fact that the enamel of deciduos teeth is more porous than that of permanent teeth, leading to the milky appearance of the temporary dentition, are specific characteristics of deciduous teeth. These make them more susceptible to dental caries, and early diagnosis is required to prevent dental caries progression [5]
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