3872 Evaluation of Laser Efficacy in Dentine Hypersensitivity Treatment: Comparative Study

Saturday, July 17, 2010: 3:30 p.m. - 4:45 p.m.
Location: Exhibit Hall (CCIB)
Presentation Type: Poster Session
W. ALMAHDI, R. SAIMEH, S. ALASHKAR, and R. KHATTAB, Damascus University, Damascus, Syria
Objectives: Dentine hypersensitivity treatment with laser, is one of new promising choices. The aim of this study was to evaluate the clinical efficacy of Nd:YAG, Er,Cr:YSGG and GaAlAs laser in the treatment of Dentine hypersensitivity. Methods: 100 teeth form 19 patients exhibiting dentine hypersensitivity were included in the study. These teeth were randomly allocated into 4 groups (25 teeth each group). Each group was treated by a unique type of laser; Group 1, Nd:YAG laser (1 W, 100 mj, 10 Hz, 4 times every time 20 S), Group 2, Er,Cr:YSGG laser (Z6 tip, 0.25 W, 30 seconds, without air and water), Group 3, GaAlAs laser (150 mW, 4 J/cm2 at dentine, 4 J/cm2 at tooth apex, 3 sessions with 72 hour interval), and group 4 was considered as a control group with no laser treatment. Pain assessment was performed by Numerical Rating Scale NRS, after an air blast at baseline, immediately, 1 month, 3 months, and 6 months post treatment. Results: No significant differences were presented in the mean values of NRS before treatment between 4 groups (P≤0.05). However, immediately after treatment and after 1, 3, 6 months of follow up, there were significant differences in mean values of NRS in tested groups compared with control group (P≤0.05). After 6 months there was a significant reduction in dentine hypersensitivity observed in Nd:YAG group (78.94%) in comparison with Er,Cr:YSGG (58.84%), GaAlAs (50.56%) and control (20.14%). Conclusion: We found that Nd:YAG laser is more effective than Er,Cr:YSGG and GaAlAs lasers, in the treatment of dentine hypersensitivity, after 6 months postoperatively.

Keywords: Dentin, Hypersensitivity and Lasers
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