19 June 2015 Analysis of photodynamic cream effect in dental caries using optical coherence tomography
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Proceedings Volume 9531, Biophotonics South America; 95313A (2015) https://doi.org/10.1117/12.2180962
Event: SPIE Biophotonics South America, 2015, Rio de Janeiro, Brazil
Abstract
The aim of this study was to assess the effect in the enamel demineralization of low-intensity infrared laser (λ=810 nm, 100 mW/cm2, 90 sec, 4.47 J/cm2, 9 J) with or without photodynamic cream fluorinated or not fluorinated, using Optical Coherence Tomography (OCT). Background data: Lasers can be used as tools for the prevention of tooth enamel demineralization.

All enamel specimens (n= 105) were analyzed using OCT at baseline, and randomly assigned into seven groups (n=15): C (+), laser application; C(-), no treatment; (F), acid fluoride gel; cream (IV); cream and neutral fluoride (IVF); cream and laser (IVL); and cream with neutral fluoride+ laser (IVFL). The specimens were submitted to all kind of treatments before demineralizing pH cycling challenge and were reanalyzed.

ANOVA and Tukey's multiple comparative analysis (p <0.01) demonstrated a greater delta attenuation between baseline and post challenge for C + (0.034 ± 0.011) compared to IVF (0.016 ± 0.007) F (0.018 ± 0.010) IVFL (0.019 ± 0.008), and IVL (0.014 ± 0.010). The cream laser group (IVL) also showed lower delta (0.014 ± 0.010) compared to C - (0.025 ± 0.008).

The OCT technique demonstrated that cream associated with laser showed the lowest quantitative enamel mineral looses after cariogenic challenge.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
P. S. Barbosa, P. S. Barbosa, A. Z. Freitas, A. Z. Freitas, G. R. de Sant'Anna, G. R. de Sant'Anna, } "Analysis of photodynamic cream effect in dental caries using optical coherence tomography", Proc. SPIE 9531, Biophotonics South America, 95313A (19 June 2015); doi: 10.1117/12.2180962; https://doi.org/10.1117/12.2180962
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