Iraqi Journal of Laser

The present work was done in an attempt to build systematic procedures for treating warts by 810nm diode laser regarding dose parameters, application parameters and laser safety. The study was done in Al-Kindy TeachingHospital in Baghdad, Iraq during the period from 1stOctober 2003 till 1stApril 2004. Fifteen patients completed the treatment and they were followed for the period of 3 months. Recalcitrant and extensive warts were selected for the study.Patients were randomly divided into 3 groupsto be treated by different laser powers 9, 12 and 15 W, power densityof 286 W/cm2,381W/cm2,477W/cm2pulse duration of 0.2 s, interval of0.2 s and repeated pulses were used. The mode of application was either circular or radial. Pain occurred for about 1 week after treatment especially on movement (when lesions near joint)to all group and power density.Oozing occurred from lesion with scales and oedema afterlaser treatment for about 1 week. Post-inflammatory hypo-pigmentation might occur after the lesionhave healed completely. No recurrence of lesions after complete healing of lesions. Complete healing of the lesion was noticed, no scarring after complete healing of lesion.Diode laser therapy of recalcitrant and extensive viral warts could be considered as avaluable alternative to other more traditional techniques. This treatment can offer a good result in eliminating the verrucae and their sequelae of recurrence, scarring and the post-operative pain

In this work, oral lesions belong to 17 patients, 7 males and 10 females. Their ages range between 15and 45 years. Follow up was conducted after one day, 7 days, 14 days, one month, and finally3 months postoperatively. The study lasted for 1.5 year. Surgical diode laser with wavelength of 810±20 nm, with two power levels of 10 and15 W were used in contact and in non-contact mode via optical fiber. The postoperative outcome revealed; greater haemostatic capability,dry, sealed wound and noticeable lack in pain sensation

Stimulative effect of 10 mWHe-Ne laser on the phagocytic activity of human polymorphonuclear leukocytes( PMNs)has been studied in vitro.Normal polymorphonuclear leucocytes were isolated from the human peripheral blood.A mixture of 0.25 ml of Hanks solution, 0.25 ml of serum, 0.25 ml of Candidaalbicans suspension and 0.25 ml of PMNs suspension was prepared. The samples of mixture of PMNs and Candida were subdivided in 1 ml ependroftubes and irradiated to He-Ne laser for 1, 3, 5, 10and 20 min. The diameter of the irradiated area was 0.8 cm. For calculation of Phagocytic index before and after irradiation, the samples were incubated (37°C) at 5, 15, 30, 60 min.The slides of samples were prepared and stained using Giemsa stain. The results showed that the bio-stimulative effect of 10 mW He-Ne laser on the phagocytic activity of( PMNs) is more observable at 3 minexposure time with 5 mW/cm2power density.Many action mechanisms were reviewed and discussed in the term of possible photo-acceptor when cells are irradiated to laser