Comparative evaluation of efficacy of diode laser and two commercially available desensitizing toothpastes for dentinal tubular occlusion
A scanning electron microscope (SEM) study
Keywords:
dentinal hypersensitivity, dentinal tubular occlusion, diode laser, scanning electron microscopeAbstract
Purpose: Dentinal hypersensitivity is a common clinical condition associated with exposed dentinal surfaces. Dentinal tubules can be entirely blocked after irradiation by 980-nm diode laser, with no significant morphological alterations after radiation. The use of toothpastes containing Potassium Nitrate and Calcium Hydroxyapatite reduces dentinal hypersensitivity. The main purpose of this study was to evaluate and compare the efficacy of Diode Laser and two Desensitizing Toothpastes for Dentinal Tubular Occlusion by Scanning Electron Microscopy (SEM). Methods: Twelve extracted premolars were divided into two halves each obtaining twenty-four dentin discs. Specimens were etched with 17% phosphoric acid to expose the tubules and were divided into four groups: i.e., Group A: Application of Diode Laser, Group B: Application of SHY-XT toothpaste, Group C: Application of Biomed toothpaste and Group D: Application of Distilled water. After treatment, quantitative analysis of occluded dentinal tubules was done by SEM analysis. Results: The mean values of total dentinal tubular occlusion in Groups A, B, C and D were 0.42, 0.86, 2.14, 4.07 respectively which was statistically significant (p<0.001*). Diode laser (Group A) yielded a significant occlusion of the dentinal tubules when compared to the two desensitizing toothpastes (Groups B and C).
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