Journal ArticleDOI
Comparison of the maximum coagulation depth in human skin for different types of medical lasers.
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TLDR
The values for the maximum coagulation depth (MCD) of various types of lasers which are specified in the literature are not comparable, because often different irradiation times were used.Abstract:
The values for the maximum coagulation depth (MCD) of various types of lasers which are specified in the literature are not comparable, because often different irradiation times were used. MCD depends not only on the wavelength of laser light, but also on the time of action of the laser beam, because of heat transfer. In excised human skin MCD was determined histologically for irradiation with the argon laser, Nd:YAG laser, and CO2 laser. Extending the irradiation time from 0.2 s to 10 s results in a 4-6-fold increase in MCD. Coagulation experiments performed with a soldering iron have shown results similar to those obtained with the CO2 laser. Enlargement of the laser-beam diameter from 1 to 2 mm leads to a 50% increase in MCD. Additional chilling of the skin with water during laser irradiation protects the skin from evaporation, and the values for MCD increase to 3.5 mm for the argon laser and 5.5 mm for Nd:YAG laser. Detailed knowledge of the MCD is necessary to obtain the desired therapeutic effect, and also to avoid unwanted effects.read more
Citations
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Lasers in dermatology: four decades of progress.
TL;DR: In this review, the currently available laser systems with cutaneous applications are outlined, with primary focus placed on recent advancements and modifications in laser technology that have greatly expanded the cutaneous laser surgeon's armamentarium and improved overall treatment efficacy and safety.
Journal ArticleDOI
Periodontal and peri‐implant wound healing following laser therapy
Akira Aoki,Koji Mizutani,Frank Schwarz,Anton Sculean,Raymond A. Yukna,Aristeo Atsushi Takasaki,Georgios E. Romanos,Yoichi Taniguchi,Katia M. Sasaki,Jorge L. Zeredo,Geena Koshy,Donald J. Coluzzi,Joel M. White,Yoshimitsu Abiko,Isao Ishikawa,Yuichi Izumi +15 more
TL;DR: The outcomes of laser therapy in soft-tissue management, periodontal nonsurgical and surgical treatment, osseous surgery and peri-implant treatment are discussed, focusing on postoperative wound healing ofperiodontal and pero-IMplant tissues.
Journal ArticleDOI
The effects of CO2, Nd:YAG and Er:YAG lasers with and without surface coolant on tooth root surfaces. An in vitro study.
TL;DR: In this paper, the authors compare and contrast the morphologic changes in tooth root surfaces treated in vitro by scaling and root planing followed by irradiation with the Er: YAG laser using air/water surface cooling and the C02 and Nd:YAG lasers, both with and without surface coolant.
Journal ArticleDOI
Treatment of Gingival Hyperpigmentation for Esthetic Purposes by Nd:YAG Laser: Report of 4 Cases
TL;DR: Blation of the gingival hyperpigmented areas were accomplished without any bleeding complications or significant postoperative pain, and three to 4 weeks after the procedures, the hyperPigmented gingiva appeared healthy, pink, and firm.
References
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Journal ArticleDOI
Histology of port wine stains following argon laser treatment.
TL;DR: The argon laser has now been firmly established as an effective treatment of certain port wine stain haemangiomas and the histological changes which occur following treatment are studied.
Journal ArticleDOI
Microvascular anastomosis using the milliwatt CO2 laser
Matthew R. Quigley,Julian E. Bailes,Hau C. Kwaan,Leonard J. Cerullo,J. Thomas Brown,Clara Lastre,Dean Monma +6 more
TL;DR: The milliwatt CO2 laser was used to anastomose small vessels in a rat femoral artery model to effects tissue bonding through changes in the collagen of the adventitia and media.
Journal ArticleDOI
Argon laser-port-wine stain interaction. Immediate effects.
TL;DR: It is suggested that, in addition to the major nonspecific destructive component of argon laser therapy, there is a smaller adjacent "specific" zone of damage in which collagenous stroma is maintained and chromophore content becomes important as a determinant of injury.
Journal Article
Morphologic studies in the treatment of nevus flammeus with argon laser
TL;DR: Immediately after the argon laser impact one finds necrosis of epidermis and superficial dermis, and later on vessels are completely replaced by granulation tissue and after 2-4 weeks by newly formed fibrous tissue.
Journal Article
Connective tissue regeneration after laser-CO2 therapy.
TL;DR: The ultrastructural pattern of fibroblasts involved in the healing process of laser-treated tissues has been investigated and is interpreted as a proliferative pattern of the connective tissue which differs from that of some benign tumors and of healing wounds.