The following are the modes of different tissue reaction by LASER.
a. Photo-ablative Reactions:
- It occurs when molecule bonds are divided. e.g. ruby laser can split the molecular bonds of tattoo ink c minimal thermal damage. Macrophages remove the tattoo ink after the molecular bonds are broken.
b. Photo-chemical Reaction :
- occurs when infrared visible or UV laser light interact with photosensitizes to produce chemical and physical r×ns
- Bans for photodynamic therapy.
c. Photo-chemical Effect:
- Laser is pulsed to disrupt tissue or stones by the mechanism of slow waves.
d. Photo-thermal reaction:
- Absorbed laser light is converted to heat producing tissue effect line – cutting, coagulation, vaporization.
SWIFTLASE
Swiftlase is a new technology (swiftlase CO2 laser flash scanner) for char-free ablation of superficial tissue layer.
- It swirls the focused beam in a 3mm spot thus ablating tissue more quickly.
- This can be easily installed onto the existing CO2 laser units and provides a high power density.
- Advantages are :
- Increase speed and excellent control
- very shallow thermal damage
- less post operative pain
- Indication in otorhinolaryngology:
- Reduction of nasal polyposis
- Reduction of hypertrophied inferior turbinate causing nasal obstruction
- Uvuloplasty
- Tonsil cryptolysis.
