INTRODUCTION Laser surgery as an alternative for conventional surgical procedure has gained special attention. Using Carbon Dioxide (CO2) laser has some benefits like less post-operative pain, swelling and infection, decrease in risk of metastasis and edema, and less bleeding providing dry sites for surgery. CASE REPORT A 12 years old boy with lingual frenum with indication for excision was r...

Background: Nevus spilus can produce considerable disfigurement. There is no specific and successful treatment for this nevus. Objective: The purpose of this study was to evaluate the efficacy of CO2 laser in the treatment of nevus spilus. Patients and Methods: This quasi-experimental clinical trial was performed on 47 patients with spilus nevus in Al-Zahra Hospital in Isfahan. The diagnosis of...

OBJECTIVE To achieve the required goal of optimally sealing the apical section and the root-canal when performing an apicoectomy, the authors decided to use the CO2 laser as an additional aid. SUMMARY BACKGROUND DATA The CO2 laser has previously shown to have an excellent sealing effect on dentin surfaces. METHODS In this in vitro study, the authors examined the effects of CO2 laser applica...

BACKGROUND Postoperative erythema of several months duration is a universal and problematic side effect of cutaneous carbon dioxide (CO2) laser resurfacing. OBJECTIVE This study was conducted in order to determine the effectiveness of two formulations of topical ascorbic acid in reducing the degree and duration of post-CO2 laser resurfacing erythema. RESULTS The application of topical L-asc...

The surgical CO2 laser unit and laser bronchoscope were presented which were originally developed under a close co-operation with Asahi Optical Company and our department. The CO2 laser unit has a maximum power output of 30 Watt and can be used in two ways : in gross surgeries with the use of handpiece and in microsurgeries using the micromanipulator. The laser bronchoscope was designed to appl...

This work studied the effect of additions of carbon dioxide to argon shielding gas on the weld shape and microstructure of ST14 steel in pulsed Nd: YAG laser welding. By additions of carbon dioxide up to 15%,the weld area and depth/width ratio decreases while rising of carbon dioxide up to 25% causes increasing of weld area and depth/width ratio. It is observed that the weld metal microstructur...

Structural damage enhanced near-infrared electroluminescence (EL) of a metal-oxide-semiconductor light emitting diode (MOSLED) made on SiOx film with buried nanocrystallite Si after CO2 laser rapid-thermal-annealing (RTA) at an optimized intensity of 6 kW/cm for 1 ms is demonstrated. CO2 laser RTA induced oxygen-related defects are capable of improving Fowler-Nordheim tunneling mechanism of car...

The paper reviews the recent progress on CO2-laser writing of long-period fiber gratings (LPFGs) in different kinds of fibers, including conventional single-mode fiber (SMF), boron-doped SMF, polarization-maintaining fiber, photonic crystal fiber, and polarization-maintaining photonic crystal fiber. In particular, we report the writing dynamics for the understanding of the physical mechanisms i...

BACKGROUND AND OBJECTIVE Due to its delicate location near the eye and the high recurrence rate, the therapy of xanthelasma palpebrarum is a difficult surgical task. Besides chemical, physical, and surgical procedures, various laser systems have been used to treat these lesions (argon laser, pulsed dye laser, and CO2 laser). This study was designed to critically evaluate the use of the ultrapul...