Category Archives: Research

45 new LLLT research papers published including

• Intraoral vs extraoral LLLT treatment of trismus and facial swelling post lower third molar extraction.
  
• laser therapy versus ultrasound therapy in the treatment of  subacromial impingement syndrome
  
• Low Level Laser Therapy on Myonecrosis Induced by Bothrops jararacussu Snake Venom.
  
• Phototherapy for reducing the symptoms of hay fever.
• Low-Level Laser for Knee Osteoarthritis

Placebo-controlled randomized clinical trial of the effect two different low-level laser therapies (LLLT)-intraoral and extraoral-on trismus and facial swelling following surgical extraction of the lower third molar.

Aras MH, Gungormus M

Faculty of Dentistry, Department of Oral and Maxillofacial Surgery, Gaziantep University, Gaziantep, Turkey, mutanhamdi@hotmail.com.

The purpose of this study is to compare the effects of extraoral and intraoral low-level laser therapies (LLLT) on postoperative trismus and oedema following the removal of mandibular third molars. Forty-eight patients who were to undergo surgical removal of their lower third molars were studied. Patients were randomly allocated to one … Continue reading →

This edition finds 41 LLLT research papers on including Post Exercise Muscle Damage, fracture healing, cardicardioprotection and acne.

Comparison Between Single-Diode Low-Level Laser Therapy (LLLT) and LED Multi-Diode (Cluster) Therapy (LEDT) Applications Before High-Intensity Exercise.

Junior EC, Lopes-Martins RA, Baroni BM, De Marchi T, Rossi RP, Grosselli D, Generosi RA, de Godoi V, Basso M, Mancalossi JL, Bjordal JM

1 Laboratory of Human Movement, University of Caxias do Sul , Caxias do Sul, RS, Brazil .

Abstract Background Data and Objective: There is anecdotal evidence that low-level laser therapy (LLLT) may affect the development of muscular fatigue, minor muscle damage, and recovery after heavy exercises. Although manufacturers claim that cluster probes (LEDT) maybe more effective than single-diode lasers in clinical settings, there is a lack of head-to-head comparisons in controlled trials. This study was designed to compare the effect of single-diode LLLT and cluster LEDT before heavy exercise. Materials and Methods: This was a randomized, placebo-controlled, double-blind cross-over study. Young male volleyball players (n = 8) were enrolled and asked … Continue reading →

BRAZIL. This study compared the effect of single-diode laser and LED cluster before heavy exercise. Only the LED cluster probe decreased post-exercise creatine kinase levels after the Wingate cycle test. This is not a  true comparison of Laser vs LED as the LED irradiance was lower, the total energy was higher and it covered  a larger area. Still the results for the LED are impressive and this paper adds more weight to the validity of LED treatments. Read on …

Comparison Between Single-Diode Low-Level Laser Therapy (LLLT) and LED Multi-Diode (Cluster) Therapy (LEDT) Applications Before High-Intensity Exercise.

Junior EC, Lopes-Martins RA, Baroni BM, De Marchi T, Rossi RP, Grosselli D, Generosi RA, de Godoi V, Basso M, Mancalossi JL, Bjordal JM.

1 Laboratory of Human Movement, University of Caxias do Sul , Caxias do Sul, RS, Brazil .

Abstract Background Data and Objective: There is anecdotal evidence that low-level laser therapy (LLLT) may affect the development of muscular fatigue, minor muscle damage, and recovery after heavy exercises. … Continue reading →

This bimonthly literature watch is another record breaker with 46 papers reviewed including nerve regeneration, lymphoedema, wound healing, inflammation, musculoskeletal pain, dental and some mechanism papers.

Abstracts from 7th international congress of the world association for laser therapy october 19-22, 2008.

Photomed Laser Surg 2009 Feb 27(1) 155-209

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=19250054

Phototherapy in peripheral nerve regeneration: From basic science to clinical study.

Rochkind S

Division of Peripheral Nerve Reconstruction, Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel.

Object This review summarizes the continuous study of low-power laser radiation treatment of a severely injured peripheral nerve. Laser phototherapy was applied as a supportive factor for accelerating and enhancing axonal growth and regeneration after injury or a reconstructive peripheral nerve procedure. In nerve cell cultures, laser phototherapy was used to stimulate activation of nerve cells. Methods Low-power laser radiation was used for treatment of peripheral nerve injury using a rat sciatic nerve model after crush injury, neurorrhaphy, or neurotube reconstruction. Nerve cell growth and axonal sprouting were investigated using laser phototherapy on … Continue reading →

Diode laser beams are hard to measure. They are almost never round, collimated or homogeneous. At best they can be described as being elliptical and having a Gaussian distribution. How do we measure and calculate the area of the ellipse and have the same method used throughout LLLT academia and industry?

Answer: ask The National Physics Laboratory (NPL) to review the problem and propose a solution.

NPL is a world renowned measurements and standards organisation. They play a significant role in the writing of global measurement standards e.g. how to define time (the second) and mass (the kilogram). Now they will be working with THOR to define LLLT beam standards and measurement methods for academia and industry.

This our biggest bimonthly Literature Watch ever. There is so much interesting clinical and lab work being published including LLLT treatment of Meniere’s Disease, muscle fatigue, stroke, bone healing, Oral Mucositis, TMJ, Carpal Tunnel Syndrome, TB, burns and even Snake Venom.

Effect of Low-Level Laser Therapy on Mast Cells in Viability of the Transverse Rectus Abdominis Musculocutaneous Flap.

Pinfildi CE, Liebano RE, Hochman BS, Enokihara MM, Lippert R, Gobbato RC, Ferreira LM

Department of Plastic Surgery and Professor of IMES-FAFICA, Sao Paulo Federal University (UNIFESP), Sao Paulo, SP, Brazil.

Abstract Objective: To assess the effect of low-level laser therapy (LLLT) on viability of mast cells of the transverse rectus abdominis musculocutaneous (TRAM) flap. Background Data: LLLT has been recently used on the TRAM flap to stimulate mast cells. Materials and Methods: Eighty-four Wistar rats were randomly divided into seven groups of 12 rats in each: group 1 (sham laser therapy); group 2 received 3 J/cm(2) at one point; group 3 received 3 J/cm(2) at 24 points; group 4 received 72 J/cm(2) at … Continue reading →

Yet another NASA NIR LED therapy paper was published recently showing that LED treatment may be therapeutic to damaged neurons, this time in a Parkinson’s disease model. I thought some of you may not appreciate quite how much research has been conducted with LED’s so here is a list of 43 that I found on PubMed.

Near-infrared light via light-emitting diode treatment is therapeutic against rotenone- and 1-methyl-4-phenylpyridinium ion-induced neurotoxicity.

Liang HL, Whelan HT, Eells JT, Wong-Riley MT

Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA.

Parkinson’s disease is a common progressive neurodegenerative disorder characterized by the degeneration of dopaminergic neurons in the substantia nigra pars compacta. Mitochondrial dysfunction has been strongly implicated in the pathogenesis of Parkinson’s disease. Thus, therapeutic approaches that improve mitochondrial function may prove to be beneficial. Previously, we have documented that near-infrared light via light-emitting diode (LED) treatment was therapeutic to neurons functionally inactivated by tetrodotoxin, potassium cyanide (KCN), or methanol intoxication, and LED pretreatment rescued neurons from KCN-induced apoptotic cell … Continue reading →