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The association between Nd:YAG laser and desensitizing dentifrices for the treatment of dentin hypersensitivity
Journal article   Peer reviewed

The association between Nd:YAG laser and desensitizing dentifrices for the treatment of dentin hypersensitivity

Sandra Ribeiro Cunha, Stephanie Assimakopoulos Garofalo, Tais Scaramucci, Denise Maria Zezell and Ana Cecilia Correa Aranha
Lasers in medical science, Vol.32(4), pp.873-880
05/01/2017
DOI: 10.1007/s10103-017-2187-9
PMID: 28293873
url
http://repositorio.ipen.br:8080/xmlui/handle/123456789/27915View
Open Access

Abstract

This study aims to evaluate the association between Nd: YAG laser (with and without a photoabsorber) and two desensitizing dentifrices containing 15% NovaMin or 8% arginine, as potential treatments for dentin hypersensitivity (DH). DH was simulated by EDTA application for 2 min. Specimens were then analyzed with an environmental scanning electron microscope (ESEM) to ensure open dentin tubules (ODT), counted by using ImageJ software. Specimens were randomized into eight groups (n = 10): Laser (L), Laser+ Photoabsorber (LP), Arginine (A), Arginine+Laser (AL), Arginine+Laser+Photoabsorber (ALP), NovaMin (N), NovaMin+Laser (NL), and NovaMin+ Laser+ Photoabsorber (NLP). Laser irradiation was performed with 1 W, 100 mJ, 10 Hz, congruent to 85 J/cm(2); 4 irradiations of 10 s each, with 10 s intervals between them. After treatment, specimens were again analyzed by ESEM and submitted to erosive/abrasive cycling for 5 days. A final ESEM analysis was performed. Data were analyzed with two-way repeated measure ANOVA and Tukey tests (alpha = 0.05). After treatment, groups N, NL, and NLP presented the lower number of ODT, but they did not different from LP, ALP, and AL. Group A presented the highest number of ODT and it did not differ from group L. Groups L, AL, ALP, and LP presented intermediate results, without differing from each other. After cycling, group A presented the highest number of ODT and did not differ significantly from the other groups, except NLP. None of the associations tested presented better tubule occlusion than NovaMin by itself. Arginine was the only treatment that presented improved tubule occlusion when associated with Nd: YAG laser.
Engineering Surgery Technology Engineering, Biomedical Life Sciences & Biomedicine Science & Technology

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