Lasers in Dentistry CE
The first laser ever built in 1960 was ____________.
A. CO2
B. erbium
C. Nd:YAG
D. ruby - answerD
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
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
D. lowered amplification of static emitted radiation - answerC
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
Optical Pumping is used to achieve which step in laser creation?
A. Amplification
B. Emission
C. Radiation
D. Stimulation - answerD
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 emission mode that has true pulsed bursts of laser energy is ____________.
A. continuous
B. free running pulsed
C. gated wave
, D. intermittent - answerB
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
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 actual physical work done by a laser is mostly a result of which interaction?
A. Scattering
B. Absorption
C. Transmission
D. Refraction - answerB
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. CO2 lasers are primarily absorbed by hemoglobin.
C. Shorter near infrared laser wavelengths of diodes and Nd:YAG exhibit lesser tissue
penetration than erbium lasers.
D. Diode lasers primary chromophore is collagen. - answerA
Fluorescence of tissue stimulated by laser light is mostly important in ____________.
A. caries diagnosis
B. biostimulation
C. periodontal therapies
D. osseous surgery - answerA
The primary biological effect of lasers when performing soft tissue procedures is
____________.
A. photochemical
B. photoacoustic
C. photothermal
D. photodisruptive - answerC
When tissue is heated to 60 degrees C, _______________.
A. protein will begin to denature
B. tissue is vaporized
C. tissue will show signs of carbonization
The first laser ever built in 1960 was ____________.
A. CO2
B. erbium
C. Nd:YAG
D. ruby - answerD
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
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
D. lowered amplification of static emitted radiation - answerC
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
Optical Pumping is used to achieve which step in laser creation?
A. Amplification
B. Emission
C. Radiation
D. Stimulation - answerD
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 emission mode that has true pulsed bursts of laser energy is ____________.
A. continuous
B. free running pulsed
C. gated wave
, D. intermittent - answerB
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
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 actual physical work done by a laser is mostly a result of which interaction?
A. Scattering
B. Absorption
C. Transmission
D. Refraction - answerB
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. CO2 lasers are primarily absorbed by hemoglobin.
C. Shorter near infrared laser wavelengths of diodes and Nd:YAG exhibit lesser tissue
penetration than erbium lasers.
D. Diode lasers primary chromophore is collagen. - answerA
Fluorescence of tissue stimulated by laser light is mostly important in ____________.
A. caries diagnosis
B. biostimulation
C. periodontal therapies
D. osseous surgery - answerA
The primary biological effect of lasers when performing soft tissue procedures is
____________.
A. photochemical
B. photoacoustic
C. photothermal
D. photodisruptive - answerC
When tissue is heated to 60 degrees C, _______________.
A. protein will begin to denature
B. tissue is vaporized
C. tissue will show signs of carbonization
