Association of Nd:YAG laser and calcium-phosphate desensitizing pastes on dentin permeability and tubule occlusion
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2021
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Journal of Applied Oral Science
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Objective: To evaluate the efficacy of Nd:YAG laser associated with
calcium-phosphate desensitizing pastes on dentin permeability and tubule
occlusion after erosive/abrasive challenges. Methodology: Dentin specimens
were exposed to 17% ethylene diamine tetra-acetic acid (EDTA) solution for
5 min and randomly allocated into five groups: G1, control (no treatment);
G2, Nd:YAG laser (1 W, 10 Hz, 100 mJ, 85 J/cm2); G3, Laser + TeethmateTM
Desensitizer; G4, Laser + Desensibilize Nano P; and G5, Laser+Nupro®.
Specimens underwent a 5-day erosion-abrasion cycling. Hydraulic
conductance was measured post-EDTA, post-treatment, and post-cycling.
Post-treatment and post-cycling permeability (%Lp) was calculated based on
post-EDTA measurements, considered 100%. Open dentin tubules (ODT) were
calculated at the abovementioned experimental moments using scanning
electron microscopy and ImageJ software (n=10). Data were analyzed using
two-way repeated measures ANOVA and Tukey’s test (α=0.05). Results: G1
presented the highest %Lp post-treatment of all groups (p<0.05), without
significantly differences among them. At post-cycling, %Lp significantly
decreased in G1, showed no significant differences from post-treatment in G3
and G4, and increased in G2 and G5, without significant differences from G1
(p>0.05). We found no significant differences in ODT among groups (p>0.05)
post-EDTA. At post-treatment, treated groups did not differ from each other,
but presented lower ODT than G1 (p<0.001). As for post-cycling, we verified
no differences among groups (p>0.05), although ODT was significantly lower
for all groups when compared to post-EDTA values (p<0.001). Conclusion:
All treatments effectively reduced dentin permeability and promoted tubule
occlusion after application. Combining Nd:YAG laser with calcium-phosphate
pastes did not improve the laser effect. After erosive-abrasive challenges,
treatments presented no differences when compared to the control.
Como referenciar
MAXIMIANO, VINICIUS; MACHADO, ALANA C.; LOPES, RAQUEL M.; RABELO, FERNANDA E.M.; GAROFALO, STEPHANIE A.; ZEZELL, DENISE M.; ARANHA, ANA C.C.; SCARAMUCCI, TAIS. Association of Nd:YAG laser and calcium-phosphate desensitizing pastes on dentin permeability and tubule occlusion. Journal of Applied Oral Science, v. 29, p. 1-11, 2021. DOI: 10.1590/1678-7757-2020-0736. Disponível em: http://repositorio.ipen.br/handle/123456789/32021. Acesso em: 25 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.