laser therapy

Question 1

what are lasers

Answer 1

1) electrical source excites the protons
2) photons bounce back against the mirror and shoot out the laser pointer

Question 2

advantages of lasers in periodontal therapy

Answer 2

1) ablation
2) hemostasis
3) bactericidal

Question 3

when laser reaches the tissue

Answer 3

1) it can be reflected, absorbed, scattered, or transmitted
2) degree of water absorption determine the lasers ability to penetrate biologic tissue

Question 4

nd:yag and diode lasers have shorter wavelengths

Answer 4

1) not absorbed by water and transmit through tissue

Question 5

co2 and er:yag

Answer 5

1) longer wavelengths, absorbed by water and therefore will function at tissue surface

Question 6

CO2 laser

Answer 6

1) 10,600 nm
2) high concentrated heat, excellent for soft tissue
3) not for hard tissue bc high temperature

Question 7

er yag

Answer 7

1) 2940 nm (moderate to high absorption)
2) can be used for tissue and bone
3) minimal heat related side effects
4) can remove calculus

Question 8

nd yag

Answer 8

1) 1064 short wavelength, poor surface absorption
2) use for excision and incision of soft tissue, pocket curettage, and bacterial disinfection
3) selective absorption by melanin, hemoglobin and pigmented bacteria

Question 9

diode laser

Answer 9

1) carbonization of the tip increases the temperature
2) absorbed by pigmentation
3) similar to nd yag but not as effective

Question 10

current evidence suggests that

Answer 10

1) lasers do not add additional benefit as adjunct to SRP, not covered by insurance

Question 11

exostosis

Answer 11

1) can be removed with er yag