Picosecond Laser-Induced Photothermal Skin Damage Evaluation by Computational Clinical Trial.
Conclusions: This computational clinical trial shows the feasibility of applying computational clinical trials for the safety evaluation of novel medical laser devices. In contrast to preclinical and clinical tests, the proposed computational method offers regulatory science for appropriately and quickly predicting and evaluating the safety of a novel laser device. PMID: 32903975 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - September 11, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Prospective Comparison Study of 532/1064 nm Picosecond Laser vs 532/1064 nm Nanosecond Laser in the Treatment of Professional Tattoos in Asians.
Conclusions: All patients tolerated the treatments well. The efficacy of the 1064 nm picosecond laser for black tattoos is significantly better than the other studied lasers. The efficacy of the 532 nm picosecond laser is significantly better than the other studied lasers for red tattoos. The efficacy of the 532 nm picosecond laser is significantly better than the 532 nm nanosecond laser and better than the 1064 nm picosecond laser for green tattoos. Mild to moderate post-inflammatory hyperpigmentation was observed in 35.1%, 24.3% 27.0%, and 21.6% of the tattoos treated with the 532 nm nanosecond laser, the 532 nm picoseco...
Source: Laser Therapy - September 11, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Apocrine hidrocystoma appearing after Er:YAG laser treatment: a case report.
We present a case of multiple apocrine hidrocystomas on the nasal dorsum which became apparent after ablative laser treatment. We also review the literature for apocrine hidrocystoma, including their clinical presentation, histopathological findings and treatment options. PMID: 32903989 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - September 11, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

The Effect on Muscle Hardness of Acupuncture Stimulation Using Low-reactive Level Laser Therapy and Silver Spike Point Therapy, along with Stretching.
Conclusions: This is because an improved local blood flow due to SSP therapy is considered to have relaxed muscle tonus, which boosted metabolism and removed algogenic substances. This became more effective through a combined use of stretching and low-power laser irradiation. Moreover, it was suggested that stimulation of the acupuncture points in the crus could have a further effect on muscle hardness and the pennation angle. PMID: 32903997 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - September 11, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

A randomized comparative trial of corticosteroid phonophoresis, local corticosteroid injection, and low-level laser in the treatment of carpal tunnel syndrome.
Conclusion: The three treatments are comparable and beneficial for carpal tunnel syndrome. PMID: 32904004 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - September 11, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

WIDE-RANGING EFFECT OF Covid-19: A TIME FOR REFLECTION.
Authors: Ohshiro T PMID: 32904009 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - September 11, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Clinical and Radiographic Evaluation of Pulpotomy using MTA, Biodentine and Er,Cr:YSGG Laser in primary teeth- A Clinical Study.
Conclusion: The study showed that the success of pulpotomy procedure is independent of the type of medicament used for pulpotomy. Moreover, the study also shows that Er,Cr:YSGG laser can be effectively used for pulpotomy procedures. PMID: 32904022 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - September 11, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Histological investigation of picosecond laser-toning and fractional laser therapy.
Conclusions: Recovery of dermal and epidermal age related atrophy by picosecond laser-toning and picosecond fractional therapy was histologically confirmed. Picosecond fractional therapy demonstrated superior improvement. PMID: 32904059 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - September 11, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Helicobacter pylori Eradication Using Laser Endoscope and Methylene Blue.
Conclusions: Our results showed that the laser endoscope and basic MB were effective for H. pylori eradication. PMID: 32904076 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - September 11, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Intraoral Dual Wavelength Laser Diode Therapy for Chronic Maxillary Sinusitis.
Authors: Elkalla RA, Nossier AAH, Millar AL, El-Sheikh MM, El Behairy RAA, Mogahed HGH Abstract Background: Chronic sinusitis is one of the most common chronic diseases involving different age groups. The different etiological factors and difficult diagnostic procedures contribute to misdiagnosis and chronicity of sinusitis. There is no standard treatment for sinusitis. Long term use of corticosteroids and antibiotics may lead to numerous adverse side effects. Laser therapy has been suggested as a non-invasive treatment for sinusitis. It has anti-inflammatory and antibacterial effects. When considering maxillary si...
Source: Laser Therapy - September 11, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Goodbye Boar, Hello Rat!
Authors: Ohshiro T PMID: 32255915 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - April 9, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Photodynamic therapy by lysosomal-targeted drug delivery using talaporfin sodium incorporated into inactivated virus particles.
Conclusions: Laserphyrin® and L-HVJ-E were distributed mainly in lysosomes and induced cell death by both apoptosis and necrosis. Furthermore, L-HVJ-E-mediated PDT effectively killed cultured PC-3 cells and exerted higher photocytotoxicity than Laserphyrin®-mediated PDT. PMID: 32255916 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - April 9, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Effects of 830 nm low-power laser irradiation on body weight gain and inflammatory cytokines in experimental diabetes in different animal models.
Authors: Bhawal UK, Yoshida K, Kurita T, Suzuki M, Okada Y, Tewari N, Oka S, Kuboyama N, Hiratsuka K Abstract Background and aims: The present investigation was carried out to determine the levels of blood serum components and inflammatory cytokines in diabetic rat models [Goto-Kakizaki (GK), Zucker, and streptozotocin (STZ)-induced Sprague Dawley (SD) rats] which underwent abdominal Low-Power Laser Irradiation (LPLI) and compare them with non-irradiated controls. Methods: The animals were subdivided into the following groups: diabetic control rats (GK, Zucker, STZ) and diabetic rats treated with LPLI (GK + LPL...
Source: Laser Therapy - April 9, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Intravenous Laser Wavelength Irradiation Effect on Interleukins: IL-1 α, IL-1β, IL6 in Diabetic Rats.
Conclusions: we can conclude from our data on diabetic rats that in intravenous LLLT, with constant laser energy, shorter wavelengths like Blue (λ= 450 nm) is more effective than longer wavelengths such as Red (λ = 638 nm) and IR (λ = 808 nm) lasers to lower the level of interleukins toward non-diabetic ones. PMID: 32255918 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - April 9, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

The effect of combined corticotomy and low level laser therapy on the rate of orthodontic tooth movement: split mouth randomized clinical trial.
Conclusion: Low-Level Laser Therapy combined to corticotomy could not achieve a higher rate of canine retraction compared to the golden standard corticotomy technique alone. No long-term adverse effects on the alveolar mucosa were detected following both techniques. PMID: 32255919 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - April 9, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Hydrogen peroxide penetration into the pulp chamber during conventional in-office bleaching and diode laser-assisted bleaching with three different wavelengths.
Conclusion: Considering the results of this study, it can be stated that hydroge peroxide penetration in to pulp chamber in diode laser activation of bleaching agent according to manufactures instruction is not higher than in-office bleaching. The wavelength of diode laser had significant effect on penetration of hydrogen peroxide into pulp chamber. PMID: 32255920 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - April 9, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Effective management of focal reactive gingival overgrowths by diode laser: A review and report of two cases.
Conclusions: Diode soft tissue laser has added advantages like a bloodless surgical field, reduced bacteremia, minimal intra and postoperative discomfort over conventional modalities. Thus it is highly effective in the surgical management of FRGO. PMID: 32255921 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - April 9, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Rain, Rain, Go Away … But It Still Came!
Rain, Rain, Go Away … But It Still Came! Laser Ther. 2018 Sep 30;27(3):165-166 Authors: Ohshiro T PMID: 32158061 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - March 14, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

A case control series for the effect of photobiomodulation in patients with low back pain and concurrent depression.
Conclusions: This preliminary investigation suggests that an antidepressant effect may result from PBM to the back and thighs in patients with LBP and concurrent depression. PMID: 32158062 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - March 14, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Effectiveness of Low Level Laser Therapy (LLLT) in the treatment of Lateral elbow tendinopathy (LET): an umbrella review.
Conclusion: This umbrella review found poor results for the effectiveness of LLLT in the management of LET. Therefore, further research with well-designed RCTs is required to provide meaningful evidence on the effectiveness (absolute and relative) of LLLT for the management of LET. PMID: 32158063 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - March 14, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Clinical and radiographic evaluation of diode laser pulpotomy on human primary teeth.
Conclusion: There was no significant difference between diode laser pulpotomy and formocresol pulpotomy of human primary teeth after 6 and 12 months. Only a fraction of cases (5%) had radiographic problems at their follow-up in the laser group. PMID: 32158064 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - March 14, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Efficiency of Er:YAG utilization in accelerating deep bite orthodontic treatment.
Conclusion: The application of Er:YAG laser is an effective mean to speed orthodontic tooth movement with a significant reduction in pain and discomfort after application. PMID: 32158065 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - March 14, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Gingival depigmentation by Er,Cr:YSGG laser and diode laser: a split mouth, clinical trial study.
Authors: Bakhshi M, Mojahedi SM, Asnaashari M, Rahmani S, Namdari M Abstract Background and aims: The Aim of this study was to evaluate the effectiveness of Diode laser and Er,Cr:YSGG laser ablation on the treatment of physiologic gingival melanin hyperpigmentation. Materials and methods: This research design was split mouth, double blind, and clinical trial. The power of the diode laser was set at 1 W, fiber 320 µ, irradiation mode: continuous-wave with treatment mode of contact tip and Er,Cr:YSGG laser (2780 nm) was set at 100 MJ, frequency of 15 Hz, total power of 1.75 W, 10% water and 20% air. Bleedin...
Source: Laser Therapy - March 14, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Different modes of diode laser irradiation: effects on enamel surface and intrapulpal temperature at debonding.
Conclusion: Diode-laser irradiation in pulsed mode or continuous wave at given outputs (2, 2.5, 3 W) were not statistically different in regard to producing enamel surface damages or increasing intrapulpal temperature. PMID: 32158067 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - March 14, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Laser phototherapy in acute posttraumatic trismus - Case-series study.
Authors: Rasca E, Namour A, Fauchon-Giumelli A, Nammour S Abstract Backgroud and aims: There are very few studies on laser phototherapy (LPT) in acute temporomandibular disorders (TMDs). Our objective is to assess the effectiveness of laser phototherapy (LPT) on the limitation of the mouth opening due to an acute mandibular trauma. Subjects and methods: Fourteen women of 41 ± 3 years and 24 men of 38 ± 3 years, with no history of TMD and having sustained a mandibular trauma within the prior 20 hours, were treated exclusively by using an 810-nm laser beam in a continuous wave mode, with an output p...
Source: Laser Therapy - March 14, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Hot, hotter, hottest!!!
HOT, HOTTER, HOTTEST!!! Laser Ther. 2019 Sep 30;28(3):161-163 Authors: Ohshiro T PMID: 32009728 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - February 6, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Percutaneous Exposures of volunteers to polychromatic light (480-3400 nm) trigger systemic mechanism of the human myeloma cells growth delay without any effect on bortezomib cytotoxicity in vitro.
Conclusion: The results suggest the systemic mechanism of polychromatic light and argue in favor of its oncological safety during/after BTZ therapy of MM patients without effect on the drug cytotoxicity. PMID: 32009729 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - February 6, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Photobiomodulation guided healing in a sub-critical bone defect in calvarias of rats.
Conclusion: This current study concluded that the use of PBM was effective in stimulating newly formed bone and collagen fiber deposition in the sub-critical bone defect, being a promising strategy for bone tissue engineering. PMID: 32009730 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - February 6, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Antimicrobial effect on Candida albicans biofilm by application of different wavelengths and dyes and the synthetic killer decapeptide KP.
Authors: Merigo E, Chevalier M, Conti S, Ciociola T, Fornaini C, Manfredi M, Vescovi P, Doglio A Abstract The aim of this study was to test the application in vitro of different laser wavelengths at a low fluence in combination or not with proper photosensitizing dyes on Candida albicans biofilm with or without a synthetic killer decapeptide (KP). Candida albicans SC5314 was grown on Sabouraud dextrose agar plates at 37°C for 24 h. Cells were suspended in RPMI 1640 buffered with MOPS and cultured directly on the flat bottom of 96-wells plates. The previously described killer decapeptide KP was used in this stud...
Source: Laser Therapy - February 6, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

The effect of different re-mineralizing agents and diode laser irradiation on the microhardness of primary molar enamel: An in vitro study.
Conclusion: Application of the agents, containing the combination of Ca, P, and F, was significantly better than others in increasing the microhardness of the enamel. Although the application of diode laser increased the hardness of the enamel. PMID: 32009732 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - February 6, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

The effectiveness of home-use photobiomodulation toothbrush for treating dentin hypersensitivity: A pilot study.
Conclusion: At-home treatment of dentin hypersensitivity with photobiomodulation toothbrush is a convenient, safe, and effective method for the management of dentin hypersensitivity. PMID: 32009733 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - February 6, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Er:YAG laser for the aesthetic treatment of developmental enamel defects in frontal teeth: a case report.
Conclusions: The use of Er:YAG laser for the treatment of developmental enamel defects in frontal teeth is a safe, painless and minimally invasive; moreover, it is able to assure a good aesthetic result. PMID: 32009734 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - February 6, 2020 Category: Laser Surgery Tags: Laser Ther Source Type: research

Efficacy of seasonal allergic rhinitis using an 810 nm diode laser system.
Conclusions: The results showed that the 810 nm diode laser offered a safe and effective solution for the uncomfortable symptoms of allergic rhinitis and could be well applied during the season of Japanese cedar pollen dispersion. Furthermore, a tendency towards high efficacy was demonstrated for laser treatment in class 6 cedar pollinosis patients, based on the specific IgE antibody test. PMID: 31190693 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - June 14, 2019 Category: Laser Surgery Tags: Laser Ther Source Type: research

Altered adhesion of dental sealant to tooth enamel microscopically modified by Er:YAG laser irradiation: An in vitro study.
Conclusion: Our study has shown a reduced shear bond strength of dental sealant to an Er:YAG laser-irradiated enamel, compared with phosphoric acid-etched enamel. PMID: 31190694 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - June 14, 2019 Category: Laser Surgery Tags: Laser Ther Source Type: research

The effect of antimicrobial photodynamic therapy against virulence genes expression in colistin-resistance Acinetobacter baumannii.
Conclusions: It can be concluded from the results that the ompA as an outer membrane of A. baumannii is degraded after exposing aPDT and it will probably be done the penetration of antibiotics into cells of this bacterium easily. PMID: 31190695 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - June 14, 2019 Category: Laser Surgery Tags: Laser Ther Source Type: research

Goodby Dog, Hello Pig!
Authors: Ohshiro T PMID: 31182898 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - June 13, 2019 Category: Laser Surgery Tags: Laser Ther Source Type: research

Usefulness of picosecond pulse alexandrite laser treatment for nevus of Ota.
Conclusions: Our results suggest that 755 nm ps laser treatment is efficacious for the treatment of nevus of Ota with minimum adverse events. PMID: 31182899 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - June 13, 2019 Category: Laser Surgery Tags: Laser Ther Source Type: research

Candida albicans Sterilization Using a Light-Emitting Diode and Methylene Blue.
Conclusions: Our results suggested that PACT using basic MB was effective for C. albicans sterilization. PMID: 31182900 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - June 13, 2019 Category: Laser Surgery Tags: Laser Ther Source Type: research

Efficacy Comparison of Nd:YAG laser, diode laser and dentine bonding agent in dentine hypersensitivity reduction: a clinical trial.
In this study, 135 teeth of 22 patients diagnosed with dentin hypersensitivity were divided into three groups: In group 1, the teeth were irradiated by diode laser with 810 nm wavelength for 30 seconds and in group 2, the teeth were irradiated by Nd:YAG laser with 1064 nm wavelength for 40 seconds. CLEARFIL SE BOND was applied on teeth in group 3. LLLT was carried out in 3 sessions with 7-day intervals between sessions, during a period of 3 consecutive weeks. Hypersensitivity was assessed by cold test according to the criteria proposed by Uchida at baseline, immediately after treatment and at 1, 3 and 6 months, postoperati...
Source: Laser Therapy - June 13, 2019 Category: Laser Surgery Tags: Laser Ther Source Type: research

Association of Bioglass/Collagen/Magnesium composites and low level irradiation: effects on bone healing in a model of tibial defect in rats.
Conclusions: These results lead us to conclude that the Col enriched BG/Mg composites irradiated with LLLT presented superior biological and mechanical properties, demonstrating to be a promising bone graft. PMID: 31182902 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - June 13, 2019 Category: Laser Surgery Tags: Laser Ther Source Type: research

Fractional microneedling radiofrequency and fractional 1927 nm thulium laser treatment offer synergistic skin rejuvenation: A pilot case series.
Conclusions: The combination of MFR and FTL was safe and effective, and produced synergistic results in skin rejuvenation in the Asian skin type which were judged to be better than either system used on its own. Further larger population, split-face and controlled trials are warranted to confirm these optimistic results. PMID: 31182903 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - June 13, 2019 Category: Laser Surgery Tags: Laser Ther Source Type: research

Photosensitizers in antibacterial photodynamic therapy: an overview.
Authors: Ghorbani J, Rahban D, Aghamiri S, Teymouri A, Bahador A Abstract Antibacterial Photodynamic therapy (APDT) is a process utilizing light and light sensitive agents (named photosensitizer (PS)) and is usually applied in an oxygen-rich environment. The energy of the photons is absorbed by the photosensitizer and subsequently transferred to surrounding molecules. Consequently, reactive oxygen species and free radicals are formed. These oxidative molecules can damage bacterial macromolecules such as proteins, lipids and nucleic acids and may result in bacterial killing. Unlike antibiotics, APDT as a novel techn...
Source: Laser Therapy - June 13, 2019 Category: Laser Surgery Tags: Laser Ther Source Type: research

ISLSM, WFSLMS and NPO-WFSLMS: What's in a Name?
Authors: Ohshiro T PMID: 30087526 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - August 9, 2018 Category: Laser Surgery Tags: Laser Ther Source Type: research

Effect of Er:YAG laser energy densities on thermally affected dentin layer: Morphological study.
Conclusion: Dentin organic matrix presented the minimum alteration when Er:YAG laser is used specifically at an appropriate level of energy (60 mJ). PMID: 30087527 [PubMed] (Source: Laser Therapy)
Source: Laser Therapy - August 9, 2018 Category: Laser Surgery Tags: Laser Ther Source Type: research

Effect of 810 nm diode laser on physiologic gingival pigmentation.
This study aimed to evaluate the efficacy of diode laser for treatment of PGP. Subjects and methods: This quasi-experimental study (one-group pretest-post-test design) was conducted on 20 patients complaining of gingival melanin pigmentation. The gingiva of the anterior segment of the arch was ablated with 810 nm diode laser until the entire visible pigmentation was removed. Clinical observations for the intensity of pigmentation were made at baseline, one month and three months, postoperatively. Data were analyzed using SPSS and Friedman test. Results: Preoperatively, the mean score of gingival melanin pigmentatio...
Source: Laser Therapy - August 9, 2018 Category: Laser Surgery Tags: Laser Ther Source Type: research

Hard dental tissues laser welding: a new help for fractured teeth? A preliminary ex vivo study.
Authors: Fornaini C, Merigo E, Poli F, Rocca JP, Selleri S, Lagori G, Cucinotta A Abstract Background and Aim: An important surgical goal is to provide a first intention wound healing without trauma produced by sutures and for this aim in the past several methods have been tested. The aim of this ex vivo preliminary study was to demonstrate the capacity of a 1070 nm pulsed fiber laser to treat the dental fractures by enamel and dentine melting with the apposition of hydroxyapatite nanoparticles as filler. Methods: Out of thirty freshly-extracted human third molars, decay-free, twenty-four cylinders of 5 mm thic...
Source: Laser Therapy - August 9, 2018 Category: Laser Surgery Tags: Laser Ther Source Type: research

Effects of different ceramic primers and surface treatments on the shear bond strength of restorative composite resin to zirconium.
Authors: Tabatabaei MH, Chiniforush N, Namdar SF Abstract Background and aims: Data are limited about the effect of ceramic primers on the bond of zirconia to restorative resin composite. The aim of this study was to assess the effect of different surface treatments and two ceramic primers on shear bond strength (SBS) of zirconia to restorative resin composite. Materials and methods: 100 samples of zirconium ceramic blocks were randomly divided into 5 groups (n = 20) and received the following surface treatments: a)Control groupb)AL2O3 abrasionc)Nd:YAG laserd)Er:YAG lasere)Bur preparation.Next, each group was d...
Source: Laser Therapy - August 9, 2018 Category: Laser Surgery Tags: Laser Ther Source Type: research

Evaluation of the effect of two types of laser on the growth of streptococcus mutans.
This study was done to compare the antibacterial effect of Photodynamic therapy (PDT) on streptococcus mutans (S. mutans) using two different light sources and photosensitizers (PS). Materials and methods: Five groups were studied in this research:no light and no toluidine blue ortho (TBO) as PS for control group, irradiation only (CO2 laser or Nd:YAG laser), and irradiation with PS (CO2 laser and TBO or Nd:YAG laser and TBO). Standard suspensions of S. mutans, based on the type of group, were used in different PDTs. Bacterial suspension from each treatment was subcultured onto the surface of Mueller-Hinton agar plates...
Source: Laser Therapy - August 9, 2018 Category: Laser Surgery Tags: Laser Ther Source Type: research

The durability of adhesion to Er,Cr:YSGG laser-irradiated enamel.
Authors: Ayar MK Abstract Background and aims: Adhesion durability of resin adhesives with Er,Cr:YSGG laser irradiated-enamel has been rarely investigated in the literature. Thus, the present study evaluated the influence of long-term water storage (12-month) on resin bond strength with the enamel irradiated with Er,Cr:YSGG laser irradiation deployed different settings. Materials and methods: The flattened enamel samples of 35 bovine teeth, which were embedded into acrylic blocks, were randomly divided into 7 groups (n = 5), according to surface treatments using Er,Cr:YSGG laser with different parameters 6 W/20...
Source: Laser Therapy - August 9, 2018 Category: Laser Surgery Tags: Laser Ther Source Type: research

Sperm motility is enhanced by Low Level Laser and Light Emitting Diode photobiomodulation with a dose-dependent response and differential effects in fresh and frozen samples.
The objective of this study was to investigate the effects of laser and Light Emitting Diode (LED) LLLT photobiomodulation on human spermatozoa motility and DNA integrity. Methods: An in-vitro controlled trial was performed within an IVF clinic laboratory using three human semen specimens, one fresh and two frozen. Sperm were exposed to light from a GaAlAs single laser (810 nm 200 mW) and an LED cluster (660 nm and 850 nm total power 2 W) for various irradiation times. Sperm motility for the test and control aliquots was assessed using a SQA-IIB analyser, but fertilizing ability was not. Sperm chromatin integrity was t...
Source: Laser Therapy - August 9, 2018 Category: Laser Surgery Tags: Laser Ther Source Type: research