Photobiomodulation

Neuromuscular electrical stimulation (NMES) is widely used to improve muscle strength and mitigate atrophy. However, its clinical efficacy is often limited by early neuromuscular fatigue, muscle damage, and discomfort, which reduce patient tolerance and contraction time. Photobiomodulation (PBM) has emerged as a potential therapy to enhance muscle performance and accelerate recovery by minimizing fatigue and damage. Despite its potential, few studies have investigated the effects of PBM applied specifically before an NMES-evoked fatigue protocol. This randomized, double-blind, placebo-controlled trial aims to evaluate the acute effects of PBM on neuromuscular fatigue, muscle damage, and functional outcomes in healthy young subjects. Participants will receive either active PBM (cluster probe: 5 lasers 810nm/200mW; 4 LEDs 660nm/10mW; Total Energy: 249.6 J per limb) or sham treatment 5 minutes before a fatiguing NMES protocol (80 contractions at 20% MVIC, 80 Hz, 1ms pulse width) applied to the quadriceps muscle. Assessments will be performed at baseline, immediately post-intervention, and at 24h, 48h, and 72h post-intervention. Primary outcomes include maximum and evoked isometric strength, mechanical work, and electrical muscle activity. Secondary outcomes include muscle damage (ultrasound echo-intensity), delayed onset muscle soreness (DOMS), functional performance (unilateral vertical jump), and clinical discomfort. The study seeks to determine if PBM can effectively modulate NMES-induced fatigue and muscle damage, potentially optimizing its clinical application.

Dementia with Lewy bodies (DLB) is a neurodegenerative disease diagnosed primarily based on the presence of cognitive decline, which may include difficulties with memory, attention, and more. Additionally, at least two of the following symptoms are needed for a probable diagnosis of DLB, and at least one for a possible DLB diagnosis (McKeith et al. 2017 and 2020): * Fluctuations in cognition, attention, and/or alertness * Visual hallucinations * Spontaneous parkinsonism * REM sleep behavior disorder Patients with DLB can experience cognitive deficits that can fluctuate and can vary for each patient. These may include deficits in memory, executive functions (planning and organizing), attention, visual processing, and language. This study aims to evaluate the effect of red-light therapy, delivered using a helmet that contains small LED lights, in patients with DLB. Participants' cognitive functions, clinical symptoms, quality of life and functional cerebral connectivity will be evaluated before starting therapy and again after three and six months of twice daily therapy use. As DLB also indirectly affects caregivers, the caregiver's quality of life and burden will also be evaluated before and at three and six months of therapy use by the participant. The study's inclusion period is 24 months and the duration of participation for each patient is 8 months (+/-10 days) maximum.

This randomized clinical trial aims to evaluate the effectiveness of photobiomodulation therapy (PBM) alone or combined with therapeutic exercises compared with placebo PBM associated with exercises in patients with myofascial temporomandibular disorders (TMD). Participants will be allocated into three groups: PBM alone, PBM combined with exercises, or placebo PBM combined with exercises. The intervention consists of 12 treatment sessions. Outcomes related to pain intensity, mandibular function, and clinical measures will be assessed over time. The study seeks to investigate whether PBM provides additional benefits in pain reduction and functional improvement in individuals with myofascial TMD.

The intervention in this study is to determine whether multiple applications of photobiostimulation with Nd-YAG laser improve wound healing following tooth extraction and alveolar ridge preservation. Investigators plan to assess the impact of laser treatment on wound healing by measuring salivary biomarkers, gingival wound size and surveying for the use of pain reduction and patient satisfaction. The intervention group will receive extraction and alveolar ridge preservation with Nd-YAG laser photobiostimulation on days 1, 3, and 7 following extraction and socket preservation, while the control group will receive the standard of care extraction and alveolar ridge preservation without the laser

Diabetic foot ulcers (DFU) are among the late complications of DFU, defined as skin lesions that involve the dermis to deeper structures, such as muscles and bones. Although preclinical studies have demonstrated the effects of GaAs 830 nm in diabetic wounds, no clinical studies have been performed, revealing the need for more in-depth analyses to identify the effects and ideal parameterization of PBM with GaAs 830 nm wavelength in the treatment of diabetic ulcers, improving quality of life, as well as to understand the therapeutic feasibility, time required for healing and recurrence rates of these lesions. Experimental, randomized, controlled, double-blind study, with blinding applied to the evaluator and participants. A total of 136 volunteers will be recruited for the research, carried out at the Integrated Center of Medical Specialties (CIEM) - Polyclinic. LLLT GaAs 830nm will be used with three dosages of low, medium and high intensity (4 J/cm², 8 J/cm², 12 J/cm²). The study will have three intervention groups using LLLT with GaAs 830nm and a control group, in which LLLLT will be performed with a GaAs 904nm wavelength and a dose of 10 J/cm², according to Saura et al (2024). This study was approved by the local Research Ethics Committee (Opinion 7,488,044), conducted in accordance with the Declaration of Helsinki and in accordance with the CONSORT (Consolidated Standards of Reporting Trials) guidelines.

The objective of this study will be to evaluate if photobiomodulation (FBM) can reduce postoperative pain in patients who will undergo endodontic surgery. For this randomized, controlled and double-blind clinical study, 34 patients without comorbidities who need endodontic surgery in the upper jaw (15 to 25 teeth) will be recruited. They will be randomly divided into an experimental group (n = 17) photobiomodulation (808nm, 100 mW, and 4J/cm2 with 5 points per vestibular). Applications will be made in the immediate postoperative period and 24 hours after surgery. Control group (n = 17) a FBM simulation will be performed in the same way as in the experimental group. In this group, the required analgesia will be administered within the standard with ibuprofen. Both groups will perform the necessary conventional procedures considered the gold standard in the literature. Both the patient and the evaluator will be blinded to the intervention performed. The primary outcome variable of the study will be postoperative pain, which will be assessed using the visual analog scale at all postoperative control visits (baseline, 24 hours and 7 days). As for the secondary outcome variables, the amount of systemic medication received according to the patient's need (will be provided by the investigator).. Radiographic images will be obtained after 1 and 2 months for evaluation of the repair (dimensions of the lesion, radiopacity). These radiographs will be taken digitally with the positioners implemented. Edema, ecchymosis, and evaluation of soft tissues in the anterior portion of the intra and extra-oral maxilla will also be evaluated. In addition, a digital thermometer. These parameters will be evaluated 24 hours and 7 days after the intervention. The X-rays will be taken in the 1st and 3rd month respectively.

LED Therapy for third molar surgery

Third molar extraction is one of the most performed surgical procedures in Dentistry. A comfortable postoperative period and rapid return to daily activities increase the need to control the inflammatory response and its signs and symptoms such as pain, edema, and lockjaw. Therefore, the objective of this study is to evaluate the efficacy of the prophylactic use of Photobiomodulation in the reduction of edema in the postoperative period of extractions of retained lower third molars.The primary study variable will be postoperative edema measured in millimeters, 48 hours after surgery, and the secondary variables will be: pain, lockjaw, local temperature (measured with a thermographic camera), dysphagia, and the need to ingest nonsteroidal analgesics (Acetaminophen)These variables will be evaluated at the beginning of the study (baseline), at 2 and 7 days post-surgery. All adverse effects will be recorded. The data obtained will be represented by their means ± SD and the p value will be set at 0.05.

The study will investigate the effect of photobiomodulation treatment on the risk of developing late age related macula degeneration (AMD) in the study eye in patients with wet AMD in the fellow eye.