Comparative Study of Interaction with Skin Tissue between The Erbium: Yttrium-Aluminum-Garnet ( Er: YAG ) Laser and The Carbon Dioxide ( CO2 ) Laser

Résumé

Lasers have been widely used in cosmetic and plastic surgery, especially in fighting against aging skin. However, there is still a lack of scientific research and statistical information regarding the effect of laser-tissue interaction in real skin. Therefore, in order to gain a better understanding on this matter, a fundamental study has been conducted using several lasers, including the Er: YAG laser, CO2 laser. Advances in laser technology allow for precise tissue removal and minimal thermal damage. However, mechanisms for cosmetic improvement have not been determined. Investigators have suggested that ablation, collagen shrinkage, and new collagen deposition all contribute to the clinical outcome. In a live farm chicken , we examined gross and microscopic effects of thermal and mechanical ablation devices to characterize immediate and long-term mechanisms in skin rejuvenation. This study aimed to determine and compare the effect of different lasers on skin structure as a trial to understand how laser exerts its medical effects in biological effects and thus determine the safety with lowest skin damage. Briefly, the chicken skin was exposed to kind of laser Er:YAG laser and CO2 laser to understand how both of them interact with tissue . Our result shows that, the erbium laser is absorb by the water of tissue than CO2 laser which is has penetrate through the tissue than other laser and from the photos we can see from our naked eyes how the CO2 has damage to skin than Er:YAG laser.