Background: The first part of this historical overview, (see Laser Therapy, 2014; 23: 89-95), took the reader from the conception of the WFSLMS to its inception at the inaugural meeting in Tokyo, 2005 and events up to the 2009 2nd WFSLMS in Tokyo when the author was the congress president. The previous article also dealt with the necessity for founding a non-profit organization, NPO-WFSLMS, to handle the commercial and social responsibilities of the WFSLMS. For details, please refer to that previous article. Meetings: The 2nd WFSLMS congress was successfully held in 2009 in Japan, under the presidency of Professor Krishna Rau. The third WFSLMS meeting was planned for Paris in 2013 together with the 20th ISLSM congress under the Meeting Presidency of Dr Jean Abitbol, while the 19th ISLSM was to be held in Korea in 2011 under the Meeting Presidency of Prof. Jin-Wang Kim. Unforseen problems beyond the control of the organizers forced the cancellation of both the 19th and 20th meetings of the ISLSM, the latter also being the location of the planned third WFSLMS congress in Paris, but with the cooperation of the organizers of the 5th congress of the International Phototherapy Association (IPTA) the 3rd WFSLMS meeting was held in Lithuania, again under the presidency of Prof Rau concurrently with the 20th ISLSM, at which much was debated regarding the future course of NPO-WFSLMS and WFSLMS. The venue of the 2015 21st ISLSM Congress was set as Indore, India, and the 4th WFSLMS meeting was allocated to Florence, Italy, in tandem with the 22nd ISLSM congress. Projects: In the interim, NPO-WFSLMS effectively managed laser education programs in Japan for developing country doctors, and also handled the donation of laser systems to Vietnam and Thailand, the latter being under the auspices of the Greek Medical Laser Association, together with associated education programs. The laser-based Blood Saving Campaign (BSaC) has been actively promoted in Asian countries up to the present, designed to minimize the need for transfusions and prevent intraoperative blood loss through the hemostatic properties of surgical lasers, bloodless minimally-invasive treatment with photodynamic therapy (PDT) and noninvasive LLLT. The Future: The WFSLMS will make more active overtures to solidify the inter-society cooperation among as many of the major laser societies as possible, both national and international. There are problems to be faced and overcome, but in a mood of cautious optimism, NPO-WFSLMS will work with WFSLMS and ISLSM towards this very worthwhile goal.
Background and aims: The mortality rate from vascular diseases is one of the highest. The use of Intravenous Laser Blood Irradiation (ILBI) within the last 30 years has demonstrated high efficacy in the treatment of vascular, cardiac and other systemic diseases. Rationale: Laser energy at 630-640 nanometers is arguably the most effective for irradiation of blood and the vascular wall. Photons at this wavelength are absorbed by oxygen, improve microcirculation, can change the viscosity of the blood and affect vascular endothelium. Conclusions: In summary, more than 25 years of experience of using laser energy at 630-640 nm has shown that this waveband directly influences the parameters of all cells in the blood, blood plasma, the coagulation process and all the structural components of the vascular wall. Additionally, ILBI directly or indirectly affects the cells of the immune system, hormones, and exchange processes in an organism, thereby not only improving the function of the vascular system, but also the other systems of an organism. It can finally lead to lower the incidence and number of vascular diseases, and indirectly to the reduction of the number of diseases in other organs and even systemically, thus helping to prolong the lifespan.
Background and aims: The incidence of vascular dementia (VD) and Alzheimer‘s disease (AD) has recently increased and the prevention of progression of these diseases is very difficult. Results: The application of pinpoint plantar long-wavelength infrared light irradiation (PP-LILI) to a patient’s sole, at the point where the line drawn between the first and second metatarsal heads intersects with the vertical line from the medial malleolus, was effective in increasing blood flow to the facial artery, elevating high-density lipoprotein cholesterol (HDL-C) levels, and reducing insulin resistance. Conclusions: We found that these effects of PP-LILI might be helpful for preventing VD and AD, conditions that are becoming a social problem in an aging Japanese society.
Background and aim: The aim of this in vitro study was to compare Er, Cr: YSGG laser with ultrasonic preparation on the seal of retrograde cavities. Material and methods: Twenty-eight maxillary anterior teeth were used in this study. After removing the crowns, the canals were prepared with the step-back technique and filled with guttapercha. Three millimeters below the apex; each root was cut with a fissure diamond bur. The root surfaces were then covered with nail polish and three millimeters deep retrograde class I cavities were prepared, using Er, Cr: YSGG laser (group L=12 roots) or ultrasonic retro-tip (group U=12 roots). Four roots were arranged for negative and positive control groups. Retrograde cavities were then filled with mineral trioxide aggregate (MTA) and teeth were placed in 2% methylene blue dye for 72 hours. The amount of dye penetration in sagittal sections of each tooth was measured with a stereomicroscope. An independent sample t-test was used for statistical analysis. Results: Cavities prepared with the Er, Cr: YSGG laser (1.61 + 0.81) showed significantly less micro-leakage than those prepared with the ultrasound (2.55+ 1.84) (P value =0.02). Conclusions: Under the conditions of this research, the use of Er, Cr: YSGG laser for retrograde cavity preparation causes significantly less apical leakage and may increase the success rate of endodontic surgeries.
Introduction and aim: Low Level Laser Therapy (LLLT) can facilitate wound healing stimulating a more rapid resolution and an earlier start for the proliferation phase. The purpose of this study is to evaluate the effects of LLLT on postoperative pain and oedema following the removal of impacted lower third molars. Materials and methods: Fifty-nine patients, who were to undergo surgical removal of their lower third molars, were studied. Patients were randomly allocated to one of three groups: 1. 17 patients LLLT + traditional drug treatment 2. 17 patients traditional drug treatment as control group 3. 25 patients treated with LLLT only on one side+traditional drug treatment The laser we have used for this study is a diode laser, GaAs, which delivers both in the infrared band at the wavelength of 910 nanometers (pulsed and superpulsed source), and in the visible (continuous source) at the wavelength of 650 nanometers (red). LLLT was performed just after the intervention and approximately 12 hours after surgery delivering 240 J in 15 minutes with theoretical fluence values of 480 J/cm² and 31 J/cm² for every minute of irradiation. We considered and signed with a label constant landmarks on both sides of the face of each patient; measurements were taken: before the surgery, after the surgery right after the 1st laser treatment, after approximately 24 hours after the 2nd laser treatment. Results: We collected all the values of the oedema measurements and the VAS reports and performed a statistical analysis by means One-way Analysis of Variance (ANOVA) test: for the evaluated values (X, Y, Z) an extremely significant difference was found with p values of 0.003 for Y at the first evaluation (pre-12 hours) and less than 0.001 for the other evaluations. A significant result was obtained for VAS recorded at hospital discharge (p<0.0001). Conclusions: This study demonstrates that LLLT is effective on postoperative pain and oedema accelerating healing time and reducing patients distress.
Objectives: The Temporo-Mandibular Disorders (TMD) are a set of dysfunctional patterns concerning the temporo-mandibular joints (TMJ) and the masticatory muscles; its main symptom is pain, probably caused by inflammatory changes in the synovial membrane, alterations in the bone marrow of the mandibular condyle and impingement and compression. The aim of this preliminary study was to investigate the effectiveness in the TMD pain reduction of a new laser device recently proposed by the commerce that, due to its reduced dimensions and to be a class I laser according the ANSI classification, may be used at home by the patient himself. Materials and methods: Twenty-four patients with TMD were randomly selected: the inclusion criteria for the sample was the diagnosis of mono- or bi-lateral TMD, with acute pain restricted to the joint area, associated with the absence of any muscle tenderness during palpation. The patients were randomly assigned to two groups: Group 1 (12 patients): patients receiving real LLLT (experimental group). Group 2 (12 patients): patients receiving inactive laser (placebo group). The treatment was performed once a day for two weeks with an 808 nm diode laser by the patient himself with irradiation of the cutaneous zone corresponding to the TMJ for 15 minutes each side. Each patient was instructed to express its pain in a visual analogue scale (VAS) making a perpendicular line between the two extremes representing the felt pain level. Statistical analysis was realized with GraphPad Instat Software, where P<0.05 was considered significant and P<0.01 very significant. Results: The patient’s pain evaluation was expressed in the two study groups before the treatment, 1 week and two weeks after the treatment. The differences between the two groups result extremely significant with p<0.0001 for the comparison of VAS value after 1 and 2 weeks. Conclusions: This study, even if it may be considered such a pilot study, investigated a new way to control the pain in the temporo-mandibular diseases by an at home self administered laser device. Results are encouraging, but they will have to be confirmed by greater studies.
Background and aims: The yellow laser constitutes a totally new option in the field of laser acupuncture, in addition to the already existing red, near infrared, green and violet lasers. Especially for so called lifestyle-related diseases, this could open up new methods of integrative therapy. The goal of the present study was to investigate among other parameters blood pressure (BP), heart rate (HR), heart rate variability (HRV), and temperature effects before, during, and after stimulation of different acupoints with yellow laser. Subject and methods: We recruited 26 healthy volunteers (13 female, 13 male; mean age ± SD 24.1 ± 3.3 years) at the Medical University of Graz. The acupoints Baihui, Neiguan, Taichong and a placebo point were stimulated with a 589 nm (50 mW, 500 μm; 5 min) yellow laser. Blood pressure was measured noninvasively at the wrist; for the registration of the electrocardiogram a medilog AR12 HRV system was used. Effects on temperature were measured with a Flir i7 infrared camera. Results: There were significant decreases after yellow laser acupuncture in the systolic BP, diastolic BP also decreased (n.s.). HRV in both (men and women) increased. The temperature during the yellow laser stimulation decreased significantly in all measured points. After the stimulation it increased again significantly. Based on a questionnaire volunteers reported a significantly decreased level of stress after yellow laser stimulation. Conclusions: Significant positive effects on BP and well-being were found after yellow laser stimulation. The results are very promising and can be very important especially for the treatment of lifestyle related diseases.