Laser Technology now a days are the most important way to treat people also it include material science to nano technology.

1. LASER TECHNOLOGY
By: Saumya Ranjan Behura

2. INTRODUCTION
 Laser means “light amplification my stimulated emission of
radiation.”
 medical use of lasers is possible, when there is a
favourable interaction between laser radiation and the
human tissue.
 Laser therapy is successful in medical treatment like
treatment of detached retina, neurosurgery, dermatology
etc.

3. Laser Principle
During during laser tissue interaction, four optical
process may occurs
•direct reflection at the boundaries of the layer.
•Scattering by molecules, particles, cell
organelles and cells within the layer.
•Absorption or dissipation of absorbed energy.
•Direct transmission through the layer.

4. Laser in Medical Applications
•Advantages of optical fibers in medical
•Consideration on fiber applications.
•Typical fiber application.
•Single mode fiber application.

5. Application of Laser Treatment
•Laser, in medical, have wide applications under
different specialties as listed below:
*Opthalmology
photo coagulation therapy.
Photo distruption therapy.
Fragmentation therapy.
*Thoracic surgery.
*Neurosurgery.

6. Use of rubi laser in retinal treatment

7. Laser therapy for teeth
•Most popular and result oriented lasers used
dental treatment are
*Ruby laser
*Carbon dioxide laser
*Neodymium laser

8. Laser Physics
•The photons
•Light absorption
•Light amplification by stimulated
emission of radiation

9. Surgical technique of lasers
•The dental laser fall into fall into basic categies
*Contact mode
*Non contact mode either focused or
defocused
•Non contact surgery requires siqnificantly
greater power setting than contact surgery for the
fiber optic delivered lasers to achieve the
equivalent tissue effect.

10. Rootcanal preparation and treatment
•Invitro root canal preparation
The in-vitro root canal preparation was
performed on freshly extracted human teeth that did
not have any prior root canal treatment
•Invivo root canal treatment was performed on
patients suffering from chronic apical peridontitis.

11. Laser precautions in dentistry
Following safety precautions must be heeded by
practitioners when using laser are
*Beam alignment
*Laser control
*Reflected energy
*Fire protection
*Eye protection
*Anesthesia

12. Conclusion
Laser surface finds advantages because of
following characteristic or properties
*Highly sterile.
*Non-contact surgery
*Dry field, almost bloodless surgery
* apparent reduction in post operative pain
*More advantages for children since it is a painless
surgery.