نتایج جستجو برای: laser parameters of surgery

تعداد نتایج: 21261762  

Journal: :Plastic surgical nursing : official journal of the American Society of Plastic and Reconstructive Surgical Nurses 1993
L Williams R Gregory

Journal: :Klinichna khirurhiia 1979
S V Klimov

Three kinds of apparatus of CO2 laser, that is, Medilaser S, NIIC Lasery 60 and NIIC Lasery Model 60Z, are used in our institute. Two kinds of apparatus of Nd-YAG laser, that is, Molectron Model 8000 and Medilas are utilized also. We have used CO2 lasers for removal of tumors in 75 brain tumor cases and 9 spinal cord tumor cases. CO2 lasers were also used for hemostasis in the muscle layer and ...

In this research similar joining of NiTi shape memory alloy was studied. For this purpose, NiTi alloy in the form of wires with circular cross section possessing martensitic phase structure at room temperature was used. By utilizing Nd:YAG pulsed laser welding method followed by optimizing its technical parameters, a defectless joint in terms of appearance and metallurgical properties was obtai...

Journal: :THE JOURNAL OF JAPAN SOCIETY FOR LASER SURGERY AND MEDICINE 2001

2015
Ying Wu Ji C. He Xing T. Zhou Ren Y. Chu

PURPOSE To explore the relationship between ablation parameters of myopic laser surgery and measurement area of wavefront aberration (WA) with Hartmann-Shack wavefront sensor. METHODS 58 subjects undergone myopic laser surgeries and 74 uncorrected myopic subjects were enrolled in this experiment. The laser ablation parameters were obtained from surgical records, which included spherical error...

2006
L A Loizou D Grigg P B Boulos S G Bown

Forty nine patients with rectosigmoid carcinoma considered unsuitable for surgery underwent endoscopic Nd:YAG laser treatment for paliiation of symptoms and tumour eradication, if feasible. Altogether 25 (51%) of the lesions had distal margins less than 7 cm from the anus and 36 (73%) extended above the peritoneal reflection. In seven patients with tumours less than 3 cm in diameter, symptomati...

Journal: :journal of lasers in medical sciences 0
seyyed abbas mirnezami iranian national center of laser science and technology mahdi rajaei jafarabadi iranian national center of laser science and technology maryam abrishami iranian national center of laser science and technology

introduction: human eye is a sensitive part of human body with no direct protection and due to its lack of protection against the external heat waves, studying the temperature distribution of heat waves on the human eye is of utmost importance. various lasers are widely used in medical applications such as eye surgeries. the most significant issue in the eye surgeries with laser is estimation o...

2018
Patricia Bargiela-Pérez Jorge González-Merchán Rosa Díaz-Sánchez Maria-Angeles Serrera-Figallo Gerd Volland Martin Joergens Jose-Luis Gutiérrez-Pérez Daniel Torres-Lagares

BACKGROUND The aim of this study is to evaluate the resection of hyperplastic lesions on the buccal mucosa comparing the 532nm laser (KTP), versus diode 980nm laser, considering pain, scarring, inflammation and drug consumption that occurred postoperatively with each lasers. MATERIAL AND METHODS A prospective study of consecutive series of 20 patients in two groups that presents hyperplastic ...

Journal: :journal of dentistry, tehran university of medical sciences 0
m h hosseini assisstant professor, department of orthodontic, school of dentistry, tehran university of medical science, tehran, iran. f namvar j chalipa k saber n chiniforush s sarmadi

the purpose of this study was to compare shear bond strength (sbs) of orthodontic brackets bonded to enamel prepared by er:yag laser with two different powers and conventional acid-etching.forty-five human premolars extracted for orthodontic purposes were randomly assigned to three groups based on conditioning method: group 1- conventional etching with 37% phosphoric acid; group 2- irradiation ...

Journal: :journal of dentistry, tehran university of medical sciences 0
sakineh arami assistant professor, department of restorative dentistry, school of dentistry, tehran university of medical sciences, tehran, iran. masoume hasani tabatabae associate professor, department of restorative dentistry, school of dentistry, tehran university of medical sciences, tehran, iran. seyedeh fatemeh namdar phd candidate of laser dentistry, laser research center of dentistry, dentistry research institute, tehran university of medical sciences, tehran, iran. nasim chiniforush assistant professor, department of restorative dentistry, school of dentistry, birjand university of medical sciences, birjand, iran.

the aim of this study was to assess the surface of yttrium-stabilized tetragonal zirconia (y-tzp) after surface treatment with lasers and airborne-particle abrasion.first, 77 samples of presintered zirconia blocks measuring 10 × 10 × 2 mm were made, sintered and polished. then, they were randomly divided into 11 groups (n=7) and received surface treatments namely, er:yag laser irradiation with ...

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