Comparative study of laser and LED systems of low intensity applied to tendon healing

Bastos, Jessica Lucia Neves; Lizarelli, R. F. Z.; Parizotto, Nivaldo Antônio

doi:10.1134/s1054660x09170022

Cited by 44 publications

(40 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Other positive effects of phototherapy have been reported, including acceleration of the wound healing process [10][11][12], enamel remineralization [13], cell proliferation and collagen synthesis [14], increase of cell metabolism [15], expression of growth factors and extracellular matrix components, as well as stimulation of ATP synthesis and reactive oxygen species (ROS) production [2,3].…”

Section: Introductionmentioning

confidence: 99%

Correlation between light transmission and permeability of human dentin

et al. 2011

View full text Add to dashboard Cite

The influence of dentin permeability on transdentinal LED light propagation should be evaluated since this kind of phototherapy may further be clinically used to stimulate the metabolism of pulp cells, improving the healing of damaged pulps. This study evaluated the influence of the dentin permeability on the transdentinal LED light (630 nm) transmission. Forty-five 0.5-mm-thick dentin disks were prepared from the coronal dentin of extracted sound human molars. An initial measurement of transdentinal LED light transmission was carried out by illuminating the discs in the occlusal-to-pulpal direction onto a light power sensor to determine light attenuation. The discs were treated with EDTA for smear layer removal, subjected to analysis of hydraulic conductance, and a new measurement of transdentinal LED light transmission was taken. Spearman's correlation coefficient was used for analysis of data and showed a weak correlation between dentin permeability and light attenuation (coefficient= 0.19). This result indicates that higher or lower dentin permeability does not reflect the transdentinal propagation of LED light. Significantly greater transdentinal propagation of light was observed after treatment of dentin surface with EDTA (Wilcoxon test, p<0.05). According to the experimental conditions of this in vitro study, it may be concluded that dentin permeability does not interfere in the transdentinal LED light transmission, and that smear layer removal facilitates this propagation.

show abstract

Section: Introductionmentioning

confidence: 99%

Correlation between light transmission and permeability of human dentin

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Even in animal test [27], it is a fact. It is expected that with the use of a LED system, the same or even better results than with the laser intensity treatment (LILT) system are obtained, once both present similar wavelengths.…”

Section: Introductionmentioning

confidence: 96%

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

et al. 2010

View full text Add to dashboard Cite

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)

show abstract

“…LED therapy has recently been employed as an alternative to LLLT, demonstrating similar results with the added advantages of the lower cost and durability of the device. 14 It is important to evaluate the effect of phototherapy on the masticatory muscles. For such, infrared thermography has been employed for the study of skin surface temperature, 15 which is an indirect measure of changes in blood circulation.…”

Section: Introductionmentioning

confidence: 99%