نتایج جستجو برای: laser parameters of surgery

تعداد نتایج: 21261762  

Journal: :journal of lasers in medical sciences 0
massoud seifi dentofacial deformities research center, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. elahe vahid-dastjerdi laser application in medical sciences research center, shahid beheshti university of medical sciences, tehran, iran nazila ameli school of dentistry, shahid beheshti university of medical sciences, tehran, iran. mohammad-reza badiei school of dentistry, shahid beheshti university of medical sciences, tehran, iran. farnaz younessian parisa amdjadi department of dental materials, shahid beheshti university of medical sciences, tehran, iran

introduction: failure of teeth to erupt from gingival tissues at usual developmental time is called delayed tooth eruption (dte). delayed tooth eruption lead to prolonged fixed orthodontic treatment and its eventual complications. the purpose of the present study was to evaluate the effect of laser-assisted (808 nm) surgical uncovering, on the tooth emergence and orthodontic treatment of dte. m...

Carbon dioxide (CO2) laser surgery as a conservative tool plays a peculiar role in the management of head and neck cancer. Numerous patients who were candidates for transoral laryngeal microsurgery have forced us to eliminate frozen-section evaluation of surgical margins and use a magnified view of the larynx. The present study evaluated surgeon-judged negative margins with permanent microscopi...

Journal: :journal of lasers in medical sciences 0
liu ying nanfang hospital, southern medical university, colleg of stomatology, southern medical university jie gao department of stomatology, nanfang hospital, colleg of stomatology, southern medical university,510515 guangzhou, p.r. china. yan gao center of oral implantology, guangdong provincial stomatological hospital, southern medical university,510280 guangzhou, p.r. china. shuaimei xu department of stomatology, nanfang hospital, colleg of stomatology, southern medical university,510515 guangzhou, p.r. china. xueling zhan department of stomatology, nanfang hospital, colleg of stomatology, southern medical university,510515 guangzhou, p.r. china. buling wu department of stomatology, nanfang hospital, colleg of stomatology, southern medical university,510515 guangzhou, p.r. china.

introduction: to investigate the ultrastructural changes of dentin irradiated with 980-nm diode laser under different parameters and to observe the morphological alterations of odontoblasts and pulp tissue to determine the safety parameters of 980-nm diode laser in the treatment of dentin hypersensitivity (dh). methods: twenty extracted human third molars were selected to prepare dentin discs. ...

Mahmood Tabatabaei,

SUMMARY We have discussed in this article, about usages of Laser (Cortype) In Neurological - Surgery, In the beginning of the article, historical considerations have been written, then specifications of laser light have been noted, including the functions of laser. In this article, types of laser have been matched. In the another part of article, advantages of Co2 . laser have been mentioned,...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زیست شناسی 1388

126 abstract: in this research we studied the effects of cyclic hydration and dehydration of cysts of artemia urmiana and artemia parthenogenetica on the hatching percentage, survival and growth. the experiment was carried out in 3 treatments (1-3 hydration/dehydration cycles) with 3 replicates for each treatment. later effects of cold preservation at -20°c during three time periods were ...

Aryabod Elham

Introduction: In laser surgery, the laser beam can evaporate and cut the tissue like a small surgical knife when the tissue temperature is heated to 100 degrees Celsius. a complete understanding of the distribution of damage in both pathologic tissue and surrounding tissue is necessary. Although the test is the most realistic solution for treating medical problems, for this rea...

Here, the population transfer between two specific levels of Cesium atomunder the influence of chirped laser source has been numerically investigated. The maingoal of this study is the engineering of the population transfer between the 62S1/2 and 62P1/2levels of Cesium which is corresponding to its D1 transition line using a chirped lasersource. Constructing the system Hamiltonian, as well as t...

Journal: :acta medica iranica 0
hassan hashemi noor ophthalmology research center, noor eye hospital, tehran, iran. mansour taherzadeh noor ophthalmology research center, noor eye hospital, tehran, iran. mehdi khabazkhoob dezful university of medical sciences, dezful, iran.

to assess the one year results of artiflex phakic intraocular lens (iol) implantation in the treatment of high myopia. in this non-random interventional study, myopic patients with spherical equivalent worse than -5.0 diopters (d) who were not eligible for laser surgery were assessed. all patients had refraction, uncorrected and best corrected visual acuity tests (ucva and bcva), endothelial ce...

Since 1976, Shooting was include in Paralympics sport mach’s to establish same target conditions for different types of handicapped people, it is essential design a system of “laser target controls”. In this study, a laser target controller is designed by determinable of wave length of laser accuracy then, by using parameters, performance and ever redacting, theses wave length import as inp...

Journal: :journal of lasers in medical sciences 0
reza birang department of periodontology, torabinejad dental research center, school of dentistry, isfahan university of medical sciences, isfahan, iran jaber yaghini department of periodontology, dental implants research center, school of dentistry, isfahan university of medical sciences, isfahan, iran naeimeh nasri departments of oral and maxillofacial radiology, school of dentistry, isfahan university of medical science, isfahan, iran nasim noordeh dental student’s research center, school of dentistry, isfahan university of medical sciences, isfahan, iran pedram iranmanesh department of endodontics, school of dentistry, isfahan university of medical science, isfahan, iran alireza saeidi dental student’s research center, school of dentistry, isfahan university of medical sciences, isfahan, iran

introduction: periodontitis is an inflammatory periodontal disease that leads to tooth loss. recently laser has been introduced as an alternative treatment for periodontitis. the aim of the present study was to compare the effect of erbium-doped yttrium aluminum garnet (er:yag) laser with ultrasonic scaler in patients with moderate chronic periodontitis. methods: in this randomized single-blind...

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