Nd:YAG laser and calcium sodium phosphosilicate prophylaxis paste in the treatment of dentin hypersensitivity: a double-blind randomized clinical study
Original Article
First Online:
Abstract
Aim
This
double-blind, placebo-controlled, randomized clinical trial evaluated
the effectiveness of Nd:YAG laser and a calcium sodium
phosphosilicate–containing paste (NovaMin®) in the treatment of cervical
dentin hypersensitivity (CDH).
Materials and methods
Seventy
patients were randomly allocated into the following experimental
groups: control-placebo, calcium sodium phosphosilicate paste
(NovaMin®), and Nd:YAG laser (1 W, 10 Hz, 85 J/cm2). Pain was
evaluated by means of a visual analog pain scale (VAS) after
evaporative stimulation with a jet of air and tactile stimulation with
an exploratory probe, before treatment (baseline) and after 5 min,
1week, and 4 weeks. When patients presented more than one tooth with
CDH, the mean of the values obtained was calculated. Irradiation with
Nd:YAG laser was performed twice in the mesial-distal and twice in the
occlusal-gingival direction. The NovaMin®-containing paste was applied
with a rubber cup at low speed for 60 s. Patients of the placebo group
received simulations of the two treatments. As the data presented normal
distribution, the two-way ANOVA repeated measures test was used.
Results
In all the experimental times, reduction in pain was demonstrated in comparison with baseline for all treatments (p < 0.05); however, there was no difference among the experimental groups in any of the time intervals evaluated (p > 0.05).
Conclusion
All treatments were equally effective in reducing the pain of CDH.
Clinical relevance
Nd:YAG
laser irradiation and the calcium sodium phosphosilicate paste could
reduce the symptoms of CDH; thus, they stand out as viable alternatives
for the treatment of this condition.
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