Dentin hypersensitivity clinical study comparing LILT and LEDT keeping the same irradiation parameters

Abstract

Dentin hypersensitivity is a common condition associated with high dental pain. A new LED-based (light emitting diode) light source has been used as an experimental tool in some studies. Purpose: The main objective was to compare these two light sources emitting in the same spectral band (redfrom 625 to 660 nm) to promote pain relief. Material and methods: A total of 6 sessions were accomplished, being three irradiation sessions and three follow-up sessions. This single-blind study compared a control group (Placebo) and two other groups with different equipments: low laser intensity treatment (LILT) and a light emitting diode system treatment (LEDT). Results: The results showed that there is no statistical difference between LILT and LEDT groups, however, both were better than control group (p ≤ 0.01) in terms of treatment efficiency; there is no difference between the second and the third sessions for both treatment, it means that the third session was not necessary; finally, the improvement at the end of the entire research (follow up care of 30 days) was very expressive in comparison to pre-treatment situation for all teeth (p ≤ 0.01). Conclusion: LILT and LEDT were equally effective to treat dentine hypersensitivity, a 3rd treatment session was not necessary/two sessions are enough.Irradiation spots (3 at the cervical area and 1 at the apex)

Efeito da terapia LED na disfunção temporomandibular: estudo de caso

“…Segundo Lizarelli et al [8] o LED com parâmetros apropriados pode produzir efeitos equivalentes ao do laser, justificando estudos na área. Atualmente a terapia a laser de baixa intensidade é amplamente empregada no tratamento da DTM.…”

“…A utilização da terapia a laser de baixa intensidade na região do infravermelho tem sido amplamente divulgada nos meios científicos e clínicos, devido aos efeitos positivos na redução da sintomatologia dolorosa e no aumento da AMM dos pacientes com DTM [6,7]. Estudos têm apontado para possível semelhança entre os efeitos da LED em relação aos obtidos com laser [4,8]. No entanto, os efeitos da terapia LED na DTM ainda não foram amplamente estudados.…”

Mitochondrial dynamics (fission and fusion) and collagen production in a rat model of diabetic wound healing treated by photobiomodulation: comparison of 904 nm laser and 850 nm light-emitting diode (LED)

“…Photobiomodulation (PBM) is used to improve wound healing [1], promote pain relief [2], and improve muscle performance [3]. One of the basic mechanisms is to stimulate mitochondrial function when the red or near-infrared light is absorbed by cytochrome c oxidase [4].…”

In vitro effect of low-level laser on odontoblast-like cells

“…It is characterized by brief, sharp, pain arising from exposed dentin in response to tactile, evaporative, chemical or thermal stimuli, which cannot be attributed to any other dental defect or pathology [2,4,5]. Exposure of dentin is closely related to dentinal hypersensitivity, and it most frequently occurs at the buccal cervical region of canines and premolars.…”