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What are the different modes of tissue reaction by Laser? What is “swiftlase” and what are their indication in otorhinolaryngology?

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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.
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