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Photobiomodulation

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https://www.readbyqxmd.com/read/28536904/efficacy-of-photobiomodulation-therapy-on-masseter-thickness-and-oral-health-related-quality-of-life-in-children-with-spastic-cerebral-palsy
#1
Maria Teresa Botti Rodrigues Santos, Karla Santos Nascimento, Simone Carazzato, Alina Oliveira Barros, Fausto Medeiros Mendes, Michele Baffi Diniz
The study aimed to evaluate the efficacy of photobiomodulation therapy (PBMT) on bilateral masseter muscle thickness and amplitude of mouth opening in children with spastic cerebral palsy (CP), and the impact on their oral health-related quality of life (OHRQOL). Three groups were included: experimental CP group (EG: n = 26 with oral complaints), positive control CP group (PCG: n = 26 without complaints), and negative control group (NCG: n = 26 without CP). In the EG, the masseter muscles on both sides were irradiated with an infrared low-level Ga-Al-As laser (λ = 808 ± 3 nm, 120 mW) using a 3 J/cm(2) energy dose per site, with a 20 s exposure time per site (spot area: 4 mm(2); irradiance: 3 W/cm(2); energy delivery per point: 2...
May 23, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28529157/protective-treatments-and-their-target-retinal-ganglion-cells-in-diabetic-retinopathy
#2
REVIEW
Jing Zhang, Rong Liu, Hong-Yu Kuang, Xin-Yuan Gao, Hao-Ling Liu
Diabetic retinopathy(DR)is one of the complications of diabetes which could cause severe vision loss. Retinal ganglion cell(RGC)injury has been confirmed prior to micro-vascular damage. Over the past few decades, a number of animal and clinical studies have confirmed that RGC impairment leads to an early deterioration of vision in DR. Inhibition of aldose reductase (AR), advanced glycation end product (AGE), oxidative stress, glutamate toxicity, and an inflammatory response may play important roles in protecting RGCs in DR...
May 18, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28512549/evaluation-of-the-effectiveness-of-the-photobiomodulation-in-the-treatment-of-dentin-hypersensitivity-after-basic-therapy-a-randomized-clinical-trial
#3
Cristina García-Delaney, Daniel Abad-Sánchez, Josep Arnabat-Domínguez, Eduard Valmaseda-Castellón, Cosme Gay-Escoda
BACKGROUND: Dentin hypersensitivity (DH) in one of the most common causes of patient discomfort in the general population and its prevalence is higher in patients who have received basic or surgical periodontal treatment. Efficiency of the diode laser with different wavelengths has been studied by several authors, showing an improvement rate of the DH between 60-98%. The aim of the present study was to evaluate the effect of photobiomodulation (PBM) treatment on the reduction of DH after non surgical periodontal treatment...
May 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28466195/beneficial-neurocognitive-effects-of-transcranial-laser-in-older-adults
#4
Enrique Vargas, Douglas W Barrett, Celeste L Saucedo, Li-Da Huang, Jacob A Abraham, Hirofumi Tanaka, Andreana P Haley, F Gonzalez-Lima
Transcranial infrared laser stimulation (TILS) at 1064 nm, 250 mW/cm(2) has been proven safe and effective for increasing neurocognitive functions in young adults in controlled studies using photobiomodulation of the right prefrontal cortex. The objective of this pilot study was to determine whether there is any effect from TILS on neurocognitive function in older adults with subjective memory complaint at risk for cognitive decline (e.g., increased carotid artery intima-media thickness or mild traumatic brain injury)...
May 2, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28464516/photobiomodulation-therapy-on-wound-treatment-subsequent-to-q-switched-nd-yag-laser-tattoo-removal-in-rat-model
#5
Nada Abusalah Almabrouk Imrigha, Noriah Bidin, Pik Suan Lau, Nurfatin Musa, Nurlaily Zakaria, Ganesan Krishnan
Q-switched Nd: YAG laser is the most effective laser for tattoo removal. Photobiomodulation (PBM) therapy is an alternative method applied to accelerate the wound healing. This paper investigated the effects of PBM therapy using 808 nm diode laser on tattooed skin after laser tattoo removal. Forty-five rats were selected and tattooed with black ink on their dorsal, and then distributed into three groups. G0 was received non-laser irradiation. G1 was treated by laser tattoo removal using 1064 nm with energy density of 3...
May 2, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28464474/photobiomodulation-leads-to-enhanced-radiosensitivity-through-induction-of-apoptosis-and-autophagy-in-human-cervical-cancer-cells
#6
Gholamreza Esmaeeli Djavid, Bahareh Bigdeli, Bahram Goliaei, Alireza Nikoofar, Michael R Hamblin
The radiomodulatory effect of photobiomodulation (PBM) has recently been studied in cancer cells. The aim of this study was to investigate cellular mechanisms involved in the X-ray radiosensitivity of HeLa cells pre-exposed to PBM. HeLa cells were irradiated with 685 nm laser at different energy densities prior to X-ray ionizing radiation. After irradiation, clonogenic cell survival, cell death due to apoptosis and autophagy were determined. Levels of intracellular reactive oxygen species (ROS), DNA damage and, cell cycle distribution after PBM were measured...
May 2, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28441605/biological-effects-and-medical-applications-of-infrared-radiation
#7
Shang-Ru Tsai, Michael R Hamblin
Infrared (IR) radiation is electromagnetic radiation with wavelengths between 760nm and 100,000nm. Low-level light therapy (LLLT) or photobiomodulation (PBM) therapy generally employs light at red and near-infrared wavelengths (600-100nm) to modulate biological activity. Many factors, conditions, and parameters influence the therapeutic effects of IR, including fluence, irradiance, treatment timing and repetition, pulsing, and wavelength. Increasing evidence suggests that IR can carry out photostimulation and photobiomodulation effects particularly benefiting neural stimulation, wound healing, and cancer treatment...
April 13, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28437193/evaluation-of-the-effects-of-photobiomodulation-on-biomechanical-properties-and-hounsfield-unit-of-partial-osteotomy-healing-in-an-experimental-rat-model-of-type-i-diabetes-and-osteoporosis
#8
Ataroalsadat Mostafavinia, Reza Ahadi, Mohammadamin Abdollahifar, Seyed Kamran Ghorishi, Ali Jalalifirouzkouhi, Mohammad Bayat
BACKGROUND: Pulsed wave (PW) lasers exhibit biostimulatory effects on fractures in healthy and diabetic animals. OBJECTIVE: This study aims to assess the effects of photobiomodulation on bone strength and Hounsfield unit (HU) for repair of a bone defect in an experimental rat model of type I diabetes mellitus (TIDM) and osteoporosis (OP). METHODS: We divided 30 female rats into six groups of n = 5 per group: (1) ovariectomy (OVX) control, (2) OVX + PW laser and no TIDM, (3) OVX control + TIDM, (4) OVX + TIDM + PW laser, (5) OVX + TIDM + alendronate, and (6) OVX + TIDM + PW laser + alendronate...
February 22, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28429194/photobiomodulation-therapy-associated-with-treadmill-training-in-the-oxidative-stress-in-a-collagen-induced-arthritis-model
#9
Solange Almeida Dos Santos, Marcia Ataize Dos Santos Vieira, Maira Cécilia Brandão Simões, Andrey Jorge Serra, Ernesto Cesar Leal-Junior, Paulo de Tarso Camillo de Carvalho
Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by chronic and systemic inflammation, which leads to the destruction of the cartilage and bone and affects tissues in multiple joints. Oxidative stress has been implicated with regards to involvement in various disease conditions, such as diabetes mellitus and neurodegenerative, respiratory, cardiovascular, and RA diseases. In vivo experimental studies using photobiomodulation therapy (PBMT) have shown positive effects in reducing lipid peroxidation and in increasing antioxidant activity...
April 21, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28414077/hypotensive-acute-effect-of-photobiomodulation-therapy-on-hypertensive-rats
#10
J C Oishi, T F De Moraes, T C Buzinari, E C Cárnio, N A Parizotto, G J Rodrigues
The purpose of this study was to evaluate the acute effect of photobiomodulation therapy (PBM) on arterial pressure in hypertensive and normotensive rats with application in an abdominal region. Normotensive (2K) and hypertensive (2K-1C) wistar rats were treated with PBM. Systolic arterial pressure (SAP), diastolic arterial pressure (DAP), mean arterial pressure (MAP) and heart rate (HR) were measured before, during and after PBM application. The nitric oxide (NO) serum concentration was measured before and after PBM application...
June 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28359937/pilot-study-on-laser-propagation-in-maxillary-and-mandibular-bone-grey-level-image-analysis-for-optical-measurements
#11
Monalisa Jacob Guiselini, Alessandro Melo Deana, Daniela de Fátima Teixeira da Silva, Nelson Hideyoshi Koshoji, Raquel Agnelli Mesquita-Ferrari, Katia Llanos do Vale, Marcelo Betti Mascaro, Simone Aleksandra de Moraes, Sandra Kalil Bussadori, Kristianne Porta Santos Fernandes
BACKGROUND: Bone tissue anatomy, density and porosity vary among subjects in different phases of life and even within areas of a single specimen. The optical characteristics of changes in bone tissue are analyzed based on these properties. Photobiomodulation has been used to improve bone healing after surgery or fractures. Thus, knowledge on light propagation is of considerable importance to the obtainment of successful clinical outcomes. OBJECTIVE: This study determines light penetration and distribution in human maxillary and mandibular bones in three different regions (anterior, middle, and posterior)...
March 27, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28358662/effect-of-laser-photobiomodulation-with-gradual-or-constant-doses-in-the-regeneration-of-rats-mental-nerve-after-lesion-by-compression
#12
Robson Tetsuo Sasaki, Natália Garrido Grossi, Rafael Tardeli Zeni, Daniel Martinez Saez, Ivair Donizeti Gonçalves, Marcelo Cavenaghi Pereira da Silva
OBJECTIVE: Assess morphologically the efficacy of constant dose (CD) or gradual dose (GD) in photobiomodulation therapy (PBMT) during the regeneration process of rats' mental nerve after compression lesion. MATERIALS AND METHODS: Forty-eight male Wistar rats were used and divided into four groups (n = 12): negative control (NC): lesion by compression; positive control (PC): no lesion; GD: lesion by compression and PBMT with GD; and CD: lesion by compression and PBMT with CD...
March 30, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28358661/evaluation-of-the-effects-of-photobiomodulation-on-bone-healing-in-healthy-and-streptozotocin-induced-diabetes-in-rats
#13
Ataroalsadat Mostafavinia, Sara Razavi, Mohammadamin Abdollahifar, Abdollah Amini, Seyed Kamran Ghorishi, Fatemehalsadat Rezaei, Ramin Pouriran, Mohammad Bayat
OBJECTIVE: This study aimed to assess the effects of Photobiomodulation (PBM) with pulsed wave laser on Hounsfield unit (HU) and bone strength at a catabolic response (bone resorption) of a callus bone defect in healthy and streptozotocin (STZ)- induced type I diabetes mellitus (TI DM) in rats. BACKGROUND DATA: Conflicting results exist regarding the effect of PBM on bone healing in healthy and diabetic animals. MATERIALS AND METHODS: We randomly divided 20 adult female rats into the following groups: (1) control, no TI DM, and no PBM; (2) no TI DM and PBM; (3) TI DM and no PBM; and (4) TI DM and PBM...
March 30, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28345122/effect-of-laser-on-pain-relief-and-wound-healing-of-recurrent-aphthous-stomatitis-a-systematic-review
#14
REVIEW
Valerie G A Suter, Sophia Sjölund, Michael M Bornstein
The aim of this systematic review was to assess a potential benefit of laser use in the treatment of recurrent aphthous stomatitis (RAS). The primary outcome variables were pain relief, duration of wound healing and reduction in episode frequency. A PICO approach was used as a search strategy in Medline, Embase and Cochrane databases. After scanning and excluding titles, abstracts and full texts, 11 studies (ten RCTs and one non-randomised controlled trial) were included. Study selection and data extraction was done by two observers...
March 27, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28332068/photobiomodulation-with-led-and-laser-in-repair-of-mandibular-socket-rabbit-clinical-evaluation-histological-and-histomorphometric
#15
Cláudio Rômulo Comunian, Antônio Luis Neto Custódio, Leandro Junqueira de Oliveira, Carlos Eduardo Assis Dutra, Milton D'almeida Ferreira Neto, Cleuza Maria Faria Rezende
PURPOSE: The aim of this study was to evaluate the effects of LED and low-intensity laser on the healing of rabbit dental alveoli. METHODS: A total of 18 rabbits were divided into three groups of six; all rabbits underwent surgical extraction of the first lower right premolar. Following surgery, group 1 received LED irradiation, group 2 received laser irradiation, and group 3 were untreated controls. The initial applications of LED and laser began 48 h after tooth extraction and were given perpendicularly to the dental alveoli...
June 2017: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28328705/novel-approach-to-treating-androgenetic-alopecia-in-females-with-photobiomodulation-low-level-laser-therapy
#16
Shelly Friedman, Patricia Schnoor
BACKGROUND: Photobiomodulation, also referred to as low-level laser therapy (LLLT), has been studied and used for (among other diseases) the promotion of hair regrowth. OBJECTIVE/MATERIALS AND METHODS/RESULTS: A clinical study was developed to define the physiologic effects that occur when the human hair follicle and surrounding tissue structures are exposed to laser light using a novel device that is fitted with an array of laser diode sources operating at 650 nm and placed inside a sports cap to promote discretion while in use...
June 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28328287/photobiomodulation-with-non-thermal-lasers-mechanisms-of-action-and-therapeutic-uses-in-dermatology-and-aesthetic-medicine
#17
Mark Nestor, Anneke Andriessen, Brian Berman, Bruce E Katz, Dore Gilbert, David J Goldberg, Michael H Gold, Robert S Kirsner, Paul Z Lorenc
BACKGROUND: Non-thermal laser therapy in dermatology, is a growing field in medical technology by which therapeutic effects are achieved by exposing tissues to specific wavelengths of light. OBJECTIVES: The purpose of this review was to gain a better understanding of the science behind non-thermal laser and the evidence supporting its use in dermatology. METHODS: A group of dermatologists and surgeons recently convened to review the evidence supporting the use of non-thermal laser for body sculpting, improving the appearance of cellulite, and treating onychomycosis...
February 17, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/28321647/photobiomodulation-of-wound-healing-via-visible-and-infrared-laser-irradiation
#18
Hakan Solmaz, Yekta Ulgen, Murat Gulsoy
Fibroblast cells are known to be one of the key elements in wound healing process, which has been under the scope of research for decades. However, the exact mechanism of photobiomodulation on wound healing is not fully understood yet. Photobiomodulation of 635 and 809 nm laser irradiation at two different energy densities were investigated with two independent experiments; first, in vitro cell proliferation and then in vivo wound healing. L929 mouse fibroblast cell suspensions were exposed with 635 and 809 nm laser irradiations of 1 and 3 J/cm(2) energy densities at 50 mW output power separately for the investigation of photobiomodulation in vitro...
March 20, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28314941/neuropeptide-expression-and-morphometric-differences-in-crushed-alveolar-inferior-nerve-of-rats-effects-of-photobiomodulation
#19
Daniel Oliveira Martins, Fabio Martinez Dos Santos, Adriano Polican Ciena, Ii-Sei Watanabe, Luiz Roberto G de Britto, José Benedito Dias Lemos, Marucia Chacur
Inferior alveolar nerve (IAN) injuries may occur during various dental routine procedures, especially in the removal of impacted lower third molars, and nerve recovery in these cases is a great challenge in dentistry. Here, the IAN crush injury model was used to assess the efficacy of photobiomodulation (PBM) in the recovery of the IAN in rats following crushing injury (a partial lesion). Rats were divided into four experimental groups: without any procedure, IAN crush injury, and IAN crush injury with PBM and sham group with PBM...
May 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28301678/effectiveness-of-adjunctive-interventions-for-accelerating-orthodontic-tooth-movement-a-systematic-review-of-systematic-reviews
#20
REVIEW
J Yi, J Xiao, H Li, Y Li, X Li, Z Zhao
This study was aimed to summarise published systematic reviews (SRs) that assess the effects of adjunctive interventions on the acceleration of orthodontic tooth movement (OTM). Electronic and manual searches were performed up to August 2016. Systematic reviews investigating the impact of adjunctive techniques on the promotion of OTM were included. The methodological quality of the included reviews was evaluated using the A Measurement Tool to Assess Systematic Reviews (AMSTAR) scale. The quality of evidence for each intervention was assessed using GRADE...
March 16, 2017: Journal of Oral Rehabilitation
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