نتایج جستجو برای: yag

تعداد نتایج: 2935  

2014
Didem Nalbantgil Murat Tozlu Mehmet Oguz Oztoprak

Lasers are effective in debonding ceramic brackets. Unfortunately, while reducing the adhesive bond strength, lasers are also reported to increase pulpal temperature. The aim of this study was to evaluate the shear bond strengths and temperature increase levels after debonding ceramic brackets using an Er-YAG laser with or without water-cooling. Sixty polycrystalline upper premolar ceramic brac...

2015
Paola Palmero Giovanni Pulci Francesco Marra Teodoro Valente Laura Montanaro

An Al2O3/5 vol%·ZrO2/5 vol%·Y3Al5O12 (YAG) tri-phase composite was manufactured by surface modification of an alumina powder with inorganic precursors of the second phases. The bulk materials were produced by die-pressing and pressureless sintering at 1500 °C, obtaining fully dense, homogenous samples, with ultra-fine ZrO2 and YAG grains dispersed in a sub-micronic alumina matrix. The high temp...

2011
S. Irkoren

Background: Previously described methods for removal of tattoos are chemical, mechanical, surgical, termal and laser assited methods. Invention of the Q-switch mode, advanced the laser method, to be one of the most effective methods of tattoo removal. Objective: Comparing the tattoo removal and rate of lymphatic elimination of 3 different wavelengths of Q-switched Nd-YAG laser (532nm, 1064nm, c...

Journal: :THE JOURNAL OF JAPAN SOCIETY FOR LASER SURGERY AND MEDICINE 1994

Journal: :The British journal of ophthalmology 1986
S A Vernon H Cheng

High speed colour cinematography at 400 frames per second was used to photograph both single and train burst Nd/YAG laser applications in ox eyes at threshold energy levels. Measurements of the extent and speed of particle scatter and tissue distortion from the acoustic transient were made from a sequential freeze frame analysis of the films. Particles were observed to travel over 8 mm from the...

2013
Edgard Farah Chryssanthi Koutsandrea Ioannis Papaefthimiou Dimitris Papaconstantinou Ilias Georgalas

Laser peripheral iridotomy is the procedure of choice for the treatment of angle-closure glaucoma caused by relative or absolute pupillary block. Nd: YAG laser iridotomy has been reported to have several complications such as Iris bleeding, hyphema, transient IOP elevation, intraocular inflammation, choroidal, retinal detachment and vitreous hemorrhage. We report a case of a 74 year old lady on...

Journal: :The British journal of ophthalmology 1993
I D Ladas G P Pavlopoulos S N Kokolakis G P Theodossiadis

Fifty four eyes of 54 patients undergoing Nd-YAG laser posterior capsulotomy were randomly assigned to pretreatment with either 125 mg of oral acetazolamide (group A) or placebo (group B). During the first 3 hours following capsulotomy, an intraocular pressure (IOP) rise of at least 10 mm Hg was recorded in eight of the 26 eyes of group B (30.8%) and in none of the 28 eyes of group A (p < 0.01)...

Journal: :The British journal of ophthalmology 2003
D D Gaton K Mimouni M Lusky R Ehrlich D Weinberger

BACKGROUND Pupillary block rarely occurs after cataract extraction with posterior chamber intraocular lens implantation. METHODS A series of six patients (seven eyes) treated for pupillary block after posterior chamber intraocular lens implantation between 1990 and 2001 is described; in one eye, the attack occurred after phacoemulsification. RESULTS The interval between pupillary block deve...

Journal: :Diagnostic and Therapeutic Endoscopy 1998
Kazunari Yoshida Shigeru Suzuki Seishiro Mimura Hiroyuki Narahara Hiroshi Tanimura Yugo Nagai Kaichi Isono Teruo Kozu Hisayuki Fukutomi Akira Nakahara Hiromasa Kashimura Toshio Hirashima Yoko Murata Hiroko Ide Harubumi Kato

A cooperative clinical study of photodynamic therapy (PDT) for superficial esophageal carcinoma was conducted at 6 medical institution. PHE (2mg/kg) with high tumor affinity was used as the oncotropic compound. The light source was a pulse wave YAG-OPO laser with high penetration into the tissue. Irradiation was performed at an energy density of 60-180 J/cm(2) 48-72 h after PHE administration. ...

Journal: :Hinyokika kiyo. Acta urologica Japonica 2006
Koichi Shioi Minoru Yoshida Naoki Sakai Yohei Miyagi

We report a case of rapid progression of carcinoma of the penis, in a 90-year-old man, one year after yttrium-aluminum-garnet (YAG) laser therapy. This patient had received YAG laser ablation for well-differentiated, verrucous, squamous cell carcinoma of the penis at the age of 89, and was found on physical examination to have local recurrence. The recurrent tumors were surgically resected, and...

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