Lasers Quiz
The first laser ever built in 1960 was ____________________________.
a. CO2
b. erbium
c. Nd: YAG
d. ruby – answer d. ruby
The first laser marketed to dentistry was __________________.
a. Er: YAG in 1995
b. Nd: YAG in 1990
c. Nd: YAG in 1987
d. A diode in 1991 - answerb. Nd: YAG in 1990
Laser is an acronym for _____________________________________.
a. light amplitude by simple emission of radiation
b. level amplified stimulated emission of radiation
c. light amplification by stimulated emission of radiation - answerc. light amplification by
stimulated emission of radiation
Dental laser beams are _________________________.
a. monochromatic, non-coherent, and multidirectional
b. ionizing, monochromatic, and unidirectional
c. monochromatic, coherent, and unidirectional
d. non-ionizing, monochromatic, and emitted from a passive medium - answerc.
monochromatic, coherent, unidirectional
Optical Pumping is used to achieve which step in laser creation?
a. amplification
b. emission
c. radiation
d. stimulation - answerd. stimulation
Laser power is ______________________________________.
a. the rate of energy used and is measured in watts
b. the amount of energy produced and is measured in millijoules
c. the product of pulses per second and wattage
d. greatest in diode lasers - answera. the rate of energy used and is measured in watts
The emission mode that has true pulsed bursts of laser energy is
___________________________.
a. continuous
, b. free running pulsed
c. gated wave - answerb. free running pulsed
A laser running in continuous mode's peak power is
_______________________________.
a. higher than its average power
b. lower than its average power
c. the same as its average power
d. why it is so useful for cutting enamel and dentin - answerc. the same as its average
power
Thermal relaxation refers to ___________________________________.
a. the ability of biostimulation with lasers to relax skeletal muscle
b. the ability of biostimulation to dilate capillaries and increase blood flow
c. the ability of the active medium crystal to cool itself in free running pulsed mode
d. the tissues ability to absorb and dissipate heat to help minimize thermal damage with
pulsed laser usage - answerd. the tissues ability to absorb and dissipate heat to help
minimize thermal damage with pulsed laser usage
The actual physical work done by a laser is mostly a result of which interaction?
a. scattering
b. absorption
c. transmission
d. refraction - answerb. absorption
Which of the following statements are true?
a. erbium lasers primary chromophore is water and Nd: YAG lasers primary
chromophores are pigments like hemoglobin or melanin
b. shorter near infrared laser wavelengths of diodes and Nd: YAG exhibit lesser tissue
penetration than erbium lasers
c. diode lasers primary chromophore is collagen - answera. erbium lasers primary
chromophore is water and Nd: YAG lasers primary chromophores are pigments like
hemoglobin or melanin
Fluorescence of tissue stimulated by laser light is mostly important in
___________________________.
a. caries diagnosis
b. biostimulation
c. periodontal therapies
d. osseous surgery - answera. caries diagnosis
The primary biological effect of lasers when performing soft tissue procedures is
____________________________.
a. photchemical
b. photacoustic
c. photothermal
The first laser ever built in 1960 was ____________________________.
a. CO2
b. erbium
c. Nd: YAG
d. ruby – answer d. ruby
The first laser marketed to dentistry was __________________.
a. Er: YAG in 1995
b. Nd: YAG in 1990
c. Nd: YAG in 1987
d. A diode in 1991 - answerb. Nd: YAG in 1990
Laser is an acronym for _____________________________________.
a. light amplitude by simple emission of radiation
b. level amplified stimulated emission of radiation
c. light amplification by stimulated emission of radiation - answerc. light amplification by
stimulated emission of radiation
Dental laser beams are _________________________.
a. monochromatic, non-coherent, and multidirectional
b. ionizing, monochromatic, and unidirectional
c. monochromatic, coherent, and unidirectional
d. non-ionizing, monochromatic, and emitted from a passive medium - answerc.
monochromatic, coherent, unidirectional
Optical Pumping is used to achieve which step in laser creation?
a. amplification
b. emission
c. radiation
d. stimulation - answerd. stimulation
Laser power is ______________________________________.
a. the rate of energy used and is measured in watts
b. the amount of energy produced and is measured in millijoules
c. the product of pulses per second and wattage
d. greatest in diode lasers - answera. the rate of energy used and is measured in watts
The emission mode that has true pulsed bursts of laser energy is
___________________________.
a. continuous
, b. free running pulsed
c. gated wave - answerb. free running pulsed
A laser running in continuous mode's peak power is
_______________________________.
a. higher than its average power
b. lower than its average power
c. the same as its average power
d. why it is so useful for cutting enamel and dentin - answerc. the same as its average
power
Thermal relaxation refers to ___________________________________.
a. the ability of biostimulation with lasers to relax skeletal muscle
b. the ability of biostimulation to dilate capillaries and increase blood flow
c. the ability of the active medium crystal to cool itself in free running pulsed mode
d. the tissues ability to absorb and dissipate heat to help minimize thermal damage with
pulsed laser usage - answerd. the tissues ability to absorb and dissipate heat to help
minimize thermal damage with pulsed laser usage
The actual physical work done by a laser is mostly a result of which interaction?
a. scattering
b. absorption
c. transmission
d. refraction - answerb. absorption
Which of the following statements are true?
a. erbium lasers primary chromophore is water and Nd: YAG lasers primary
chromophores are pigments like hemoglobin or melanin
b. shorter near infrared laser wavelengths of diodes and Nd: YAG exhibit lesser tissue
penetration than erbium lasers
c. diode lasers primary chromophore is collagen - answera. erbium lasers primary
chromophore is water and Nd: YAG lasers primary chromophores are pigments like
hemoglobin or melanin
Fluorescence of tissue stimulated by laser light is mostly important in
___________________________.
a. caries diagnosis
b. biostimulation
c. periodontal therapies
d. osseous surgery - answera. caries diagnosis
The primary biological effect of lasers when performing soft tissue procedures is
____________________________.
a. photchemical
b. photacoustic
c. photothermal
