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Comparative evaluation of low-level laser therapy and ultrasound heat therapy in reducing temporomandibular joint disorder pain
摘要： Background: Pain, limitations in opening, asymmetrical jaw movements, and temporomandibular joint (TMJ) sounds are the most common findings in temporomandibular joint disorders (TMDs), which causes excruciating pain, inflammation of the surrounding muscles, posterior fibers, and synovial fluid. This study aimed to evaluate and compare the effects of ultrasound heat therapy and low-level laser therapy (LLLT) in reducing TMD-related pain. Methods: This prospective study included 42 patients (age range, 25–45 years), who were divided into two groups of 21 patients each. All patients were prescribed a non-steroidal anti-inflammatory drug (NSAID) twice a day for 5 days for temporary relief of pain prior to the commencement of treatment. Patients were kept on a soft diet and asked to restrict mouth opening during the same period. Fifteen sessions of LLLT (Group A) or ultrasound therapy (Group B) were administered to the affected side. Results: Post-therapy, the mean visual analog scale score for group A and group B was 4.81 (2.01) and 6.19 (1.20), respectively; the difference was statistically significant and favoring the LLLT group. Similarly, the mean mouth opening for group A and group B was 3.99 (0.40) and 3.65 (0.41), respectively; the difference was statistically significant and favoring the LLLT group. Conclusion: Our study recommends LLLT for treating TMD-related pain with no underlying bony pathology.
关键词： Ultrasonic Therapy,Temporomandibular Joint Disorders,Low-Level Laser Therapy
更新于2025-09-23 15:19:57
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Microcirculatory Response to Photobiomodulationa??Why Some Respond and Others Do Not: A Randomized Controlled Study
摘要： Photobiomodulation (PBM), a non‐ionizing, non‐thermal irradiation, used clinically to accelerate wound healing and inhibit pain, was previously shown to increase blood flow. However, some individuals respond to PBM, but others do not. The purpose of this study was to investigate factors affecting this patient‐specific response using advanced, noninvasive methods for monitoring microcirculatory activity. In this prospective, randomized controlled trial (NCT03357523), 20 healthy non‐smoking volunteers (10:10 males:females, 30 ± 8 years old) were randomized to receive either red‐ (633 nm and 70 W/cm2) or near‐infrared light (830 nm and 55 mW/cm2) over the wrist for 5 minutes. Photoplethysmography, laser Doppler flowmetry, and thermal imaging were used to monitor palm microcirculatory blood volume, blood flow, and skin temperature, respectively, before, during, and 20 minutes after irradiation. Participants with skin temperature change ≥0.5°C from baseline were considered “responders”. Near‐infrared PBM was found to induce a 27% increase in microcirculatory flow that increased to 54% during the 20‐minute follow‐up period (P = 0.049 and P = 0.004, respectively), but red light PBM did not increase the median flow. Only 10 of 20 participants were responders by thermal imaging (i.e., ≥0.5°C from baseline), and their initial skin temperature was between 33 and 37.5°C. The non‐responders had either “hot” hands (≥37.5°C) or “cold” hands (≤33°C). In responders, the meantime to 20% increase in microcirculatory blood volume and blood flow was less than 2.5 minutes after initiation of PBM irradiation. We demonstrated that PBM induces arteriolar vasodilatation that results in both immediate and long‐lasting increased capillary flow and tissue perfusion in healthy individuals. This response was wavelength‐dependent and modified by skin temperature. These findings regarding physiological parameters associated with sensitivity or resistance to PBM provide information of direct relevance for patient‐specific therapy.
关键词： body temperature regulation,laser‐Doppler flowmetry,microcirculation,low‐level laser therapy,vasodilation,thermal imaging,photoplethysmography
更新于2025-09-23 15:19:57
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Low-level laser therapy and narrative review of other treatment modalities in androgenetic alopecia
摘要： Androgenetic alopecia (AGA), also termed as androgenic alopecia or common baldness, is a condition where there is androgen mediated conversion of susceptible terminal hair into vellus hair. Although it is reported more commonly in males, it also affects females but the incidence is relatively unknown. AGA tremendously affects the psychology of the patient due to its chronicity of treatment and cosmetic implications. There are numerous treatment options available for AGA but the choice of treatment has to often be tailored according to the patient’s needs, affordability, and compliance. This review focusses on the various treatment options available, with special emphasis on the role of low-level laser therapy (LLLT) in the management of AGA. The literature research considered published journal articles (clinical trials or scientific reviews). Studies were identified by searching electronic databases (MEDLINE and PubMed) and reference lists of respective articles. Only articles available in English were considered for this review.
关键词： Treatment,Androgenetic alopecia,Low-level laser therapy
更新于2025-09-23 15:19:57
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There does not seem to be any benefit from using low-level laser therapy to treat temporomandibular pain after 1??year
摘要： There does not seem to be any benefit from using low-level laser therapy to treat temporomandibular pain after 1 year.
关键词： low-level laser therapy,orofacial pain,randomized clinical trial,pain,General dentistry
更新于2025-09-23 15:19:57
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Evaluation of angiogenesis, inflammation, and healing on irradiated skin graft with low-level laser therapy in rats (Rattus norvegicus albinus wistar)
摘要： The reconstructive techniques have been widely used in Veterinary Medicine. The post-operative adjuvants therapies like the low-level laser therapy (LLLT) are used to decrease inherent complications to reconstructive surgeries. This article purposed to define the LLLT effects on the healing, inflammation, and vascularization of the skin grafts in applicable time intervals to veterinary surgical routine. Forty rats (Rattus norvegicus albinus wistar) were used and each one was submitted to autogenous cutaneous mesh grafting in the interescapular region. The rats were randomly distributed in five groups (G1, G2, G3, G4, and G5) in accordance with the 6 J/cm2 or 10 J/cm2 dose every 3 or 5 days. These treatments were applied on the skin graft for 15 days. The histochemical evaluation with Picrosirius showed greater expression of collagen type 1 – red in grafts of G5 (p < 0.05), while in G1 did not; the expression of collagen type III – green was not induced by LLLT. The histochemical evaluation with hematoxylin-eosin showed greater numbers of fibroblasts in grafts of G4 (p < 0.05) and less hemorrhage in grafts of G5 (p < 0.05). There was modulation of the inflammatory response in irradiated skin grafts. It is concluded the exhibition of the skin grafts to 6 J/cm2 or 10 J/cm2 dose every 5 days improved the healing and the modulation of the local inflammation.
关键词： Skin graft,CD31,Low-level laser therapy,COX-2,Histology,Picrosirius
更新于2025-09-23 15:19:57
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Efetividade profil??tica e terap?autica do laser de baixa intensidade na mucosite bucal em pacientes submetidos ao tratamento do c?￠ncer
摘要： Objective: the purpose of this review is to present the different randomized clinical protocols using low level laser in the management of oral mucositis, in the last eighteen years of study. Literature review: oral mucositis remains a major problem to be solved in clinical oncology. This cytotoxic effect limits food intake by mouth due to the pain and discomfort in chewing and/or swallowing. Nutritional status may be aggravated contributing to increased morbidity and hospital stay, and providing negative impact on the quality of life of cancer patients, and on their treatment. Disturbances in the integrity and function of the oral cavity are due to the fact that radiotherapy and chemotherapy are not able to destroy tumor cells without damaging normal cells. Numerous treatments are described in literature and there are several methodologies for the treatment of oral mucositis, yet there is no consensus on the best strategy for prevention and therapy. Final considerations: several studies have shown good results with the use of low level laser, which main indications include anti-inflammatory and analgesic effects, and inducing tissue repair. However, there is no definition of a single protocol for this promising resource so far to be applied in the therapy of this pathology.
关键词： Low level,Laser therapy,Oral mucositis,Chemotherapy,Radiotherapy
更新于2025-09-23 15:19:57
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Low-Level Laser Therapy for Osteoarthritis Treatment in Dogs at Missouri Veterinary Practices
摘要： A qualitative survey was electronically distributed to practicing veterinarians in the state of Missouri to evaluate the frequency of use and economic impact of low-level laser therapy (LLLT) for the treatment of osteoarthritis (OA) in dogs in Missouri. The survey response rate was 10% (89/867). Approximately half (43%) of respondents had LLLT units, of which all used LLLT for OA treatment in dogs. In respondents without LLLT units, 20% referred patients for LLLT OA treatment. Training was most often obtained in-house by a representative of the LLLT unit manufacturer (76%). Treatment dose was largely unknown and chosen by predetermined settings on the LLLT unit (65%). In the majority of patients (84%), no treatment site preparation was performed. An average of four patients with OA were treated per wk with an average cost per treated joint of $28 (range: $15–45). This study provides insight into the current clinical use and estimated annual economic impact ($6.2 million per year) of treating a single OA joint in dogs with LLLT by Missouri veterinarians. The frequency with which LLLT is used in the treatment of OA combined with the variation in training and treatment protocols supports the need for further research regarding the application and efficacy of LLLT in dogs with OA.
关键词： OA,Missouri,low-level laser therapy,veterinary practices,LLLT,dogs,osteoarthritis
更新于2025-09-23 15:19:57
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A Randomized Controlled Trial Comparing Platelet-Rich Plasma, Low-Level Laser Therapy, and Complex Decongestive Physiotherapy in Patients with Lower Limb Lymphedema
摘要： Background: Platelet-rich plasma (PRP) is an autologous concentrated preparation of platelets characterized by lymphangiogenetic and tissue-repairing effects. Although PRP has been safely used in many different fields, there is no clinical study regarding the use of PRP in lymphedema treatment in humans. We assessed the clinical outcomes of PRP in patients with lower extremity lymphedema (LEL) in a randomized controlled trial. Methods and Results: Patients with secondary LEL were randomly allocated to one of three groups consisting of treatment with PRP with complex decongestive physiotherapy (PRP+CDP group), low-level laser therapy with CDP (LLLT+CDP group), and only CDP (CDP group). Assessment of Lymphedema Quality of-Life Questionnaire (LYMQOL) for health-related quality of life, lower-extremity-circumference (LEC) for edema, tissue dielectric constant (TDC) for extremity volume, 6-minute walking test (6MWT) for functional capacity, and numeric rating scale (NRS) scoring for extremity fullness were evaluated both before and after treatment. Forty-five patients (68.8% female) with mean age 40.84 – 15.81 years were included in the study. Significant differences in LYMQOL, LEC, NRS, and TDC values both before and after treatment were found in all groups; however, there were no statistically significant difference in values between the three groups. In the PRP+CDP group, LYMQOL values had a larger effect size than the other two groups. Significant differences in 6MWT values both before and after treatment were found in PRP+CDP and LLLT+CDP groups; however, there was no statistically significant difference in the CDP group. Conclusion: This is the first clinical study to evaluate the usage of PRP in patients with secondary LEL. PRP might be an additional treatment option of lymphedema management; however, more clinical trials in humans are needed to yield more evidence in the usage of PRP in patients with lymphedema.
关键词： QoL,secondary lymphedema,complex decongestive physiotherapy,platelet-rich plasma,low-level laser therapy
更新于2025-09-23 15:19:57
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Influence of low-level laser therapy on inflammation, collagen fiber maturation, and tertiary dentin deposition in the pulp of bleached teeth
摘要： Objectives We evaluated the effects of low-level laser therapy (LLLT) using an infrared laser (IRL) and a red laser (RL) on the pulp of molar teeth in rats after dental bleaching to assess inflammation, collagen fiber maturation, and tertiary dentin formation. Materials and methods Eighty Wistar rats (Rattus norvegicus, albinus) were randomly divided into eight groups with 10 hemimaxillae in each of the following: control; bleached (Ble, 35% hydrogen peroxide [H2O2]); Ble-1IRL and Ble-1RL (one IRL [808 nm, 30 s, 3 J] or RL [660 nm, 15 s, 1.5 J] application immediately after H2O2); Ble-3IRL and Ble-3RL (three [immediately, 24 h, and 48 h] IRL or RL applications after H2O2); and 3IRL and 3RL (three IRL or RL applications without bleaching). The rats were euthanized after 2 and 30 days for histological evaluation of inflammation (hematoxylin-eosin) and maturation of collagen fibers (picrosirius red). Additionally, the dentin deposition in the specimens obtained at 30 days was quantified via microtomography of the pulp chamber volume. Statistical analyses were performed (P < 0.05). Results Initially, severe damages to the pulp were observed in the Ble and Ble-1RL groups. Ble-1IRL and Ble-3RL groups showed lower inflammation. The bleached groups had a greater amount of mature collagen fibers than the control group. The Ble-3IRL group had a greater number of immature fibers than the Ble group. At 30 days, there was an absence of inflammation and equal proportion of mature and immature collagen fibers. All bleached groups showed a reduction in the volume of the pulp chamber. Conclusion Three consecutive applications of RL and one IRL application can minimize damage to the pulp of bleached teeth, whereas three IRL applications can minimize pulp fibrosis. However, LLLT did not prevent deposition of tertiary dentin. Clinical relevance This study describes LLLT protocols capable of minimizing inflammation and maturation of collagen fibers in pulp tissue after dental bleaching. However, the protocols proved insufficient for reducing the formation of tertiary dentin in bleached teeth.
关键词： Hydrogen peroxide,Dental bleaching,Dental pulp,Low-level laser therapy,Tertiary dentin
更新于2025-09-23 15:19:57
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A Conservative Approach for Localized Spongiotic Gingivitis Hyperplasia Using Photodynamic Therapy: A Case Report and Review of the Literature
摘要： Objective: To describe a clinical case of successful conservative management of Localized Juvenile Spongiotic Gingivitis Hyperplasia (LJSGH) using photodynamic therapy (PDT) and reviews the current literature on this pathology. Background data: LJSGH is a recently described rare disease with controversial treatment results. As of today, 13 publications report surgical treatment approaches. The use of CO2 laser and cryotherapy was reported only in one study. The use of PDT was not previously reported. Patients and methods: A 9-year-old male patient was referred to our institution with the chief complaint of asymptomatic "inflamed gingiva" starting 1 year before. Clinical examination revealed an erythematous line accompanying the gingival contour, with a certain degree of hyperplasia. The diagnosis of LJSGH was performed based on clinical features and later confirmed histopathologically. A novel approach using PDT was then proposed. The photosensitizer was methylene blue, and a semiconductor laser diode was used. Results: One week after starting PDT, gingival hyperplasia was partially reduced. Immediately after the end of treatment, a significant reduction of gingival hyperplasia was observed. PDT proved to be safe, quick and painless, with no esthetic harm. Conclusions: This case illustrates the benefit of a more conservative approach as opposed to surgical procedure, with good clinical response and decreased morbidity over a 2-year follow-up period.
关键词： photodynamic therapy,low-level laser therapy,Juvenile Spongiotic Gingivitis Hyperplasia
更新于2025-09-19 17:15:36