MedWorm: Laser Surgery Top 20

Photocoagulation of dermal blood vessels with multiple laser pulses in an in vivo microvascular model

Lasers in Surgery and Medicine — Tue, 24 Jan 2012 05:00:00 +0100

ConclusionsThe MLP approach can induce blood vessel photocoagulation at much lower RE per pulse as compared to SLP. The 5 Hz fr and the need for two pulses are achievable with modern laser technology, which makes the MLP approach practical in the clinical management of PWS birthmarks. Lasers Surg. Med. © 2012 Wiley Periodicals, Inc. (Source: Lasers in Surgery and Medicine)

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LED Phototherapy Improves Healing of Nipple Trauma: A Pilot Study

Photomedicine and Laser Surgery — Sat, 28 Jan 2012 04:16:14 +0100

Photomedicine and Laser Surgery , Vol. 0, No. 0. (Source: Photomedicine and Laser Surgery)

In vivo analysis of laser preconditioning in incisional wound healing of wild‐type and HSP70 knockout mice with Raman spectroscopy

Lasers in Surgery and Medicine — Tue, 24 Jan 2012 05:00:00 +0100

ConclusionsThe data herein supports the theory that HSP70 is involved in normal skin protein configuration and the cellularity of early wound healing. Laser preconditioning extends cellular trends in the presence of HSP70. Despite study limitations, RS provided a non‐invasive method for quantifying temporal trends in altered wound healing, narrowing candidates and design for future studies with clinically applicable instrumentation. Lasers Surg. Med. © 2012 Wiley Periodicals, Inc. (Source: Lasers in Surgery and Medicine)

Case reports on the potential of fractional laser-assisted photodynamic therapy for basal cell carcinomas

Lasers in Medical Science — Thu, 05 Jan 2012 17:06:09 +0100

Content Type Journal ArticleCategory Brief ReportPages 1-3DOI 10.1007/s10103-011-1041-8Authors Merete Haedersdal, Department of Dermatology D42, Bispebjerg University Hospital, Bispebjerg Bakke 23, 2400 Copenhagen, NV, DenmarkKatrine Togsverd-Bo, Department of Dermatology D42, Bispebjerg University Hospital, Bispebjerg Bakke 23, 2400 Copenhagen, NV, DenmarkUwe Paasch, Department for Dermatology, Venerology and Allergology, University of Leipzig, Leipzig, Germany Journal Lasers in Medical ScienceOnline ISSN 1435-604XPrint ISSN 0268-8921 (Source: Lasers in Medical Science)

Acknowledgment of Reviewers 2011

Photomedicine and Laser Surgery — Thu, 02 Feb 2012 17:24:54 +0100

Photomedicine and Laser Surgery Feb 2012, Vol. 30, No. 2: 112-113. (Source: Photomedicine and Laser Surgery)

Can fractional lasers enhance transdermal absorption of topical lidocaine in an in vivo animal model?

Lasers in Surgery and Medicine — Thu, 02 Feb 2012 05:00:00 +0100

ConclusionsThis study demonstrates that laser pretreatment significantly increases absorption of topical lidocaine so that it is detectable in the blood and that manipulating laser settings can affect drug absorption. Future work will look at translating this effect into clinical benefit. Lasers Surg. Med. © 2012 Wiley Periodicals, Inc. (Source: Lasers in Surgery and Medicine)

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Minimally ablative resurfacing with the confluent 2,790 nm erbium:YSGG Laser: A pilot study on safety and efficacy

Lasers in Surgery and Medicine — Thu, 02 Feb 2012 05:00:00 +0100

ConclusionAblative resurfacing with the 2,790 nm Er:YSGG laser demonstrated visible improvement in photodamage with good tolerability and minimal downtime. Subjects were highly satisfied, especially with respect to dyschromia, skin tone, and texture. Lasers Surg. Med. © 2012 Wiley Periodicals, Inc. (Source: Lasers in Surgery and Medicine)

Dynamic pain after laser‐assisted‐Uvulo‐palatoplasty (LAUP) can instantaneously be mitigated by topical regimens

Lasers in Surgery and Medicine — Thu, 20 Oct 2011 03:42:30 +0100

ConclusionsDynamic pain after LAUP could immediately be mitigated by local treatments upon sweet spots using topical regimens. The large‐scale relief of dynamic pain in contrast to the small area of sweet spots implies a congregation of free nerve endings there. Our finding invites further studies to correlate the neuroanatomy of the soft palate and dynamic pain caused by LAUP. Lasers Surg. Med. 43:887‐891, 2011. © 2011 Wiley Periodicals, Inc. (Source: Lasers in Surgery and Medicine)

Comparison of diode laser-assisted surgery and conventional surgery in the management of hereditary ankyloglossia in siblings: a case report with scientific review

Lasers in Medical Science — Wed, 18 Jan 2012 06:59:05 +0100

This article addresses the management of hereditary ankyloglossia using the diode laser and conventional surgery in siblings. Content Type Journal ArticleCategory Original ArticlePages 1-6DOI 10.1007/s10103-011-1047-2Authors S. Elanchezhiyan, Department of Periodontia, KSR Institute of Dental Sciences & Research, KSR Kalvinagar, Tiruchengode, Tamil Nadu 637215, IndiaR. Renukadevi, Department of Periodontia, KSR Institute of Dental Sciences & Research, KSR Kalvinagar, Tiruchengode, Tamil Nadu 637215, IndiaK. Vennila, Department of Periodontia, JKK Nataraja Dental College, NH 47, Komarapalayam, Namakkal, 638183 India Journal Lasers in Medical ScienceOnline ISSN 1435-604XPrint ISSN 0268-8921 (Source: Lasers in Medical Science)

Effects of light emitting diode (LED) therapy and cold water immersion therapy on exercise-induced muscle damage in rats

Lasers in Medical Science — Thu, 05 Jan 2012 17:06:08 +0100

Abstract The aim of this work is to analyze the effects of LED therapy at 940 nm or cold water immersion therapy (CWI) after an acute bout of exercise on markers of muscle damage and inflammation. Thirty-two male Wistar rats were allocated into four groups: animals kept at rest (control), exercised animals (E), exercised + CWI (CWI), and exercised + LED therapy (LED). The animals swam for 100 min, after which blood samples were collected for lactate analysis. Animals in the E group were returned to their cages without treatment, the CWI group was placed in cold water (10°C) for 10 min and the LED group received LED irradiation on both gastrocnemius muscles (4 J/cm2 each). After 24 h, the animals were killed and the soleus muscles were submitted to histological an...

Laser Dentistry, Current Advantages, and Limits

Photomedicine and Laser Surgery — Wed, 04 Jan 2012 15:40:02 +0100

Photomedicine and Laser Surgery Jan 2012, Vol. 30, No. 1: 1-4. (Source: Photomedicine and Laser Surgery)

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Photodynamic inactivation of biofilms formed by Candida spp., Trichosporon mucoides, and Kodamaea ohmeri by cationic nanoemulsion of zinc 2,9,16,23-tetrakis(phenylthio)-29H, 31H-phthalocyanine (ZnPc)

Lasers in Medical Science — Wed, 25 Jan 2012 18:11:34 +0100

Abstract The biofilms formed by opportunistic yeasts serve as a persistent reservoir of infection and impair the treatment of fungal diseases. The aim of this study was to evaluate photodynamic inactivation (PDI) of biofilms formed by Candida spp. and the emerging pathogens Trichosporon mucoides and Kodamaea ohmeri by a cationic nanoemulsion of zinc 2,9,16,23-tetrakis(phenylthio)-29H,31H-phthalocyanine (ZnPc). Biofilms formed by yeasts after 48 h in the bottom of 96-well microtiter plates were treated with the photosensitizer (ZnPc) and a GaAlAs laser (26.3 J cm–2). The biofilm cells were scraped off the well wall, homogenized, and seeded onto Sabouraud dextrose agar plates that were then incubated at 37°C for 48 h. Efficient PDI of biofilms was verifie...

Diode laser (980 nm) enucleation of the prostate: a promising alternative to transurethral resection of the prostate

Lasers in Medical Science — Thu, 26 Jan 2012 16:44:13 +0100

Abstract With good hemostatic ability, the end-firing continuous-wave diode laser at 980 nm was used to enucleate the prostate (DiLEP) for the treatment of benign prostatic obstruction (BPO). The study compared the patients’ demographics and surgical outcomes between DiLEP and transurethral resection of the prostate (TURP). Patients with significant BPO and a total prostatic weight of 40 g or more who had undergone DiLEP (n = 74) or TURP (n = 52) during the same period at our hospital were enrolled for analysis. DiLEP was performed by a single surgeon (Yang), and TURP by three surgeons (Yang, Hsieh and Chang). The 4-U incision technique was developed for DiLEP. The diode laser ensured bloodless incision followed by blunt dissection using the resectoscope...

Mechanisms underlying the accumulation of hypericin in non-muscle invasive bladder cancer

Photodiagnosis and Photodynamic Therapy — Sat, 16 Apr 2011 06:58:30 +0100

Introduction: Hypericin is a bright red fluorescent compound that can be used in urological medicine as a photodiagnostic to detect non-muscle-invasive bladder cancer lesions. To this end a bladder instillation fluid is prepared in which the water-insoluble hypericin is solubilized by the presence of human serum albumin (HSA) to which the compound binds. (Source: Photodiagnosis and Photodynamic Therapy)

Interstitial photodynamic therapy and laser hyperthermia in patients with intradermal metastases of breast cancer

Photodiagnosis and Photodynamic Therapy — Sat, 16 Apr 2011 06:58:44 +0100

Objectives: To optimize and improve treatment of patients with metastatic breast cancer in the skin and subcutaneous fat by acting on the past with PDT and laser hyperthermia with low patronage of healthy tissue. (Source: Photodiagnosis and Photodynamic Therapy)

The effect of post surface treatments on the bond strength of fiber posts to root surfaces

Lasers in Medical Science — Tue, 24 Jan 2012 18:14:12 +0100

Abstract The aim of the present study was to evaluate the influence of post surface treatment methods on the push-out bond strength of adhesively luted quartz fiber posts. Thirty freshly extracted and endodontically treated human incisor teeth were prepared for quartz fiber posts. The posts were submitted to three different surface treatments (n = 10), including no treatment, 50-µm aluminum-oxide (Al2O3) airborne-particle abrasion and Er:YAG laser (10 Hz, 150 mJ) irradiation. The posts were luted with resin cement. Each root was sectioned perpendicularly to its long axis to create specimens of 1-mm thickness. After the specimens were stored in distilled water at 37°C for 24 h, their push-out bond strength was tested using a universal testing machin...

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Oxide Thin Film Heterostructures on Large Area, with Flexible Doping, Low Dislocation Density, and Abrupt Interfaces: Grown by Pulsed Laser Deposition

Laser Chemistry — Mon, 13 Dec 2010 14:11:17 +0100

Advanced Pulsed Laser Deposition (PLD) processes allow the growth of oxide thin film heterostructures on large area substrates up to 4-inch diameter, with flexible and controlled doping, low dislocation density, and abrupt interfaces. These PLD processes are discussed and their capabilities demonstrated using selected results of structural, electrical, and optical characterization of superconducting (YBa2Cu3O7−δ), semiconducting (ZnO-based), and ferroelectric (BaTiO3-based) and dielectric (wide-gap oxide) thin films and multilayers. Regarding the homogeneity on large area of structure and electrical properties, flexibility of doping, and state-of-the-art electronic and optical performance, the comparably simple PLD processes are now advantageous or at least fully competitiv...

Rapid and selective removal of composite from tooth surfaces with a 9.3 µm CO2 laser using spectral feedback

Lasers in Surgery and Medicine — Thu, 01 Sep 2011 04:00:00 +0100

ConclusionThis study demonstrated that composite can be selectively removed from tooth surfaces at clinically relevant rates using a CO2 laser operating at 9.3‐µm with high pulse repetition rates with minimal heat deposition and damage to the underlying enamel. Lasers Surg. Med. © 2011 Wiley‐Liss, Inc. (Source: Lasers in Surgery and Medicine)

Removal of organic debris with Er:YAG laser irradiation and microleakage of fissures sealants in vitro

Lasers in Medical Science — Tue, 04 Oct 2011 05:56:09 +0100

Abstract The current study was conducted to improve fissure sealing by pre-treatment with Er:YAG laser irradiation in order to remove organic debris. The surface morphology, surface roughness of fissure cavities, and the degree of microleakage after laser treatment were compared with those after bristle brush treatment in vitro. Sixty extracted human teeth were used in this study. The teeth were randomly divided into two groups of 30 each. Artificial fissures were prepared in all teeth into which artificial organic debris was placed. The debris in 30 teeth of one group was removed by means of Er:YAG laser system and the remaining 30 teeth were cleaned using a bristle brush with prophylaxis paste. Surface morphology and surface roughness of were analyzed in ten samples from...

Comparing an optical parametric oscillator (OPO) as a viable alternative for mid-infrared tissue ablation with a free electron laser (FEL)

Lasers in Medical Science — Wed, 25 Jan 2012 18:11:34 +0100

Abstract Beneficial medical laser ablation removes material efficiently with minimal collateral damage. A Mark-III free electron laser (FEL), at a wavelength of 6.45 μm has demonstrated minimal damage and high ablation yield in ocular and neural tissues. While this wavelength has shown promise for surgical applications, further advances are limited by the high overhead for FEL use. Alternative mid-infrared sources are needed for further development. We compared the FEL with a 5-μs pulse duration with a Q-switched ZGP-OPO with a 100-ns pulse duration at mid-infrared wavelengths. There were no differences in the ablation threshold of water and mouse dermis with these two sources in spite of the difference in their pulse structures. There was a significant difference i...