Operstive Finsl

Question 1

Dental lasers fall where on the spectrum

Answer 1

Visible red and infrared

Question 2

Peak power

Thermal relaxation

Answer 2

Same amount of energy squeezed into smaller and smaller pulses

The shorter pulses let the heat dissipate and minimize damage

Question 3

4 things a laser can do to tissue

Which is desired

Answer 3

Transmission
Absorption
Scattering
Reflection

Absorption is desired

Question 4

Chromophore:

Answer 4

Molecule that absorbs light at a specific wavelength

Question 5

Two types of absorption

Answer 5

Photothermal

Photochemical

Question 6

Benefits of dental lasers (6)

Answer 6

Minimally invasive
Selective and precise
Reduce bacteria
Hemostasis
Reduce inflammation and pain post op
Fast healing

Question 7

_ reactions happen in low level laser therapy

Answer 7

Photochemical

Question 8

Where is the light therapy light absorbed

Causes what

Answer 8

In mitochondria at Cytochrome C oxidase.

Causes oxygen to replace NO and reduce ROS and inflammation

Question 9

If LLLT power density is too high or time is too long, what happens

Answer 9

Not healing, inhibitory effect = pain relief