Treatment of Dentinal Hypersensitivity with Diode Laser of Two Different WavelengthsA Randomised Clinical Trial

Introduction: Dentinal Hypersensitivity (DH) is one of the most prevalent dental issues that is treated by both periodontists and endodontists. Hypersensitive dentin is a sensitive or painful response that is one of the most prevalent and poorly treated chronic dental disorders. Due to the difficulty in treating cervical DH, a great range of approaches and therapeutic procedures for pain relief in have developed. Treatments with desensitising drugs have been combined with laser treatment in recent decades. The most often utilised lasers in the treatment of DH are Diode Lasers (DL). DL act on DH provoking a melting effect with crystallisation of dentine inorganic component and the coagulation of fluids contained into the dentinal tubules.

Aim: To compare the effectiveness of DL of two different wavelengths in managing DH.

Materials and Methods: This split-mouth randomised clinical trial conducted in the Department of Periodontology at Vishnu Dental College, Bhimavaram, Andhra Pradesh, India. The duration of the study was, from October 2021 to December 2021. A total of 12 patients with DH were selected and assigned to two groups. All the patients were subjected to desensitisation using DL of two different wavelengths 475 nm Bluelase system and 810 nm. Denlase system and parameters were evaluated 15 minutes after treatment, 7 days, 15 days and 30 days after treatment. Data were entered in Microsoft Excel and analysed using Statitical Package for Social Sciences (SPSS) version 10.5 software.

Results: The mean age of the study participants was 45±3 years. There was a significant difference (p-value <0.001) in tooth sensitivity values measured at baseline, and at different time intervals in both groups. Among the two groups, Denlase group showed the greatest reduction in Visual Analogue Scale (VAS) scores from baseline to one month recall compared to Bluelase laser group. Highly significant difference was found when mean VAS scores were compared between baseline and all the other time points (p-value <0.001).

Conclusion: The present study concluded that, based on the results obtained, DL of 810 nm Denlase system was effective than DL of 475 nm Bluelase system in reducing the DH. Desensitisation treatment with laser irradiation has shown to be effective in the present study.