“Laser therapy ”

1. “Laser therapy ” Presented by Lopamudra Samantray Roll #EI200157351 Under the Guidance of Mr. Vivek Sharma

2. 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. user: INTRODUCTION

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.