Clinical evaluation of dentin hypersensitivity treatment with the low intensity Gallium-Aluminum-Arsenide laser - AsGaAl

Abstract

CLINICAL EVALUATION OF DENTIN HYPERSENSITIVITY TREATMENT WITH THE LOW INTENSITY GALLIUM-ALUMINUM-ARSENIDE LASER -AsGaAlhe dentin hypersensitivity is a painful condition rather prevalent in the general population. There are several ways of treatment for such condition, including the low intensity lasers. The proposal of this study was to verify the effectiveness of the Gallium-Aluminum-Arsenide diode laser in the treatment of this painful condition, using a placebo as control.Materials and methods: Thirty-two patients were selected, 22 females and 10 males, with ages ranging from 20 to 52 years old. The 32 patients were randomly distributed into two groups, treated and control; the sample consisted of 68 teeth, 35 in the treated group and 33 in the control group. The treated group was exposed to six laser applications with intervals from 48 to 72 hours, and the control group received, as placebo, applications of a curing light. Results: A significant reduction was observed in the pain condition between the initial phase and after six laser applications; however, such reduction could also be observed for the control group exposed to the placebo. Conclusion: Therapy with the low intensity Gallium-Aluminum-Arsenide laser -AsGaAl induces a statistically significant reduction in the painful condition after each application and between the beginning and end of treatment, although there was no statistically significant difference between the treated group (laser) and the control group (placebo) at the end of treatment and after the mediate evaluation results (after 6 weeks), this way impairing the real measurement of laser effectiveness and placebo effect. Uniterms: Dentinal hypersensitivity; Tooth, hyperesthesia; Laser treatment. hiperestesia dentinária trata-se de uma condição dolorosa bastante prevalente nas populações mundiais. Várias são as modalidades de tratamento para tal condição, entre elas, os lasers de baixa potência. A proposta deste estudo foi a de verificar a efetividade do laser de diodo de Arseniato de Gálio-Alumínio no tratamento desta condição dolorosa, utilizando-se um placebo como controle. Materiais e métodos: Foram selecionados 32 pacientes, 22 do sexo feminino e 10 do sexo masculino, com idades entre 20-52 anos. Os 32 pacientes foram distribuídos de maneira aleatória em dois grupos, um tratado e outro controle, um total de 68 dentes compôs a amostra, sendo que 35 compuseram o grupo tratado, e 33 o grupo controle. O grupo tratado foi submetido a seis sessões sucessivas de irradiações em intervalos de 48 a 72 horas, o grupo controle recebeu como placebo aplicações de luz do fotopolimerizador. Resultados: observou-se redução significativa na sensação dolorosa entre a fase inicial e após as seis sessões de tratamento com laser, porém tal redução, também pode ser observada para o grupo controle, submetido ao placebo. Conclusão: a terapia com laser de baixa potência de AsGaAl induz redução estatisticamente significante da sensação dolorosa, após cada uma das aplicações, e entre o início e o final do tr...

Comparison of Low Level Laser and Arginine-Calcium Carbonate Alone or Combination in the Treatment of Dentin Hypersensitivity: A Randomized Split-Mouth Clinical Study

“…In a study comparing a 670 nm laser with a placebo light over 6 weeks following six sessions of treatment, a significant reduction from the baseline was reported in both groups, with no significant difference observed between laser treatment and placebo. 22 More recently, Vieira et al 23 compared four sessions of 660 nm laser, 3% potassium oxalate gel, and placebo gel, and showed a similar reduction in sensitivity immediately and after 3 months of follow-up in all study groups, including the placebo group. In contrast, the present study suggests that a 685 nm diode laser has a significant desensitizing effect that is different from the placebo.…”

Effect of Low-Level Laser Therapy in Reducing Dentinal Hypersensitivity and Pain Following Periodontal Flap Surgery

“…46 In the literature, there are many contradictory studies for the treatment of DH using low-level lasers. 19,22,[47][48][49][50] These differences are caused by the fact that there are various types of lasers and variety in laser parameters. Several other factors could have influenced results, such as surgical extension (number of teeth involved), time required to perform the surgical procedure, gingival inflammation grade, and number and severity of periodontal pockets.…”

Effectiveness of Laser in Dentinal Hypersensitivity Treatment: A Systematic Review

“…A total of 57 articles were excluded during this second stage because they did not fulfill the inclusion criteria (A) (inter-reviewer agreement, kappa = 0.94) (18-21, 23, 24, 29-37, 39-72, 74-81). Three fulltext articles of the remaining 6 publications were excluded because they met 1 or more of the exclusion criteria (B) (inter-reviewer agreement, kappa = 1) (25,38,73). Finally, a total of 3 studies (24,82,83) fulfilled the required selection criteria of both phases and were included in the present review.…”

“…A complex interplay of physiologic and psychological interactions underlies the effectiveness of DH therapies (25). Both the patient and doctor must believe that a treatment is valuable and desirable for the method to be successful (2).…”