Laser Exam Questions and Answers All Correct
What are the two lasers that must be in contact with the tissue for ablation to happen:
a. Diode and Er:YAG
b. Diode and Nd:YAG
c. Er:YAG and Nd:YAG
d. CO2 - Answer- b. Diode and Nd:YAG
What is the wavelength of the diode laser that absorbs t...
Laser Exam Questions and
Answers All Correct
What are the two lasers that must be in contact with the tissue for ablation to happen:
a. Diode and Er:YAG
b. Diode and Nd:YAG
c. Er:YAG and Nd:YAG
d. CO2 - Answer- b. Diode and Nd:YAG
What is the wavelength of the diode laser that absorbs the most water compared to
other
diodes?
a. 805-830nm
b. 940nm
c. 970-980 nm
d. 1064 nm - Answer- c. 970-980 nm
Which diode laser is used in periodontal therapy (i.e in pigmented bacteria)? (if question
reads which diode laser reacts to pigment: answer is all the above)
a. 805-830nm and 980nm
b. 940nm
c. 975nm
d. 1064 nm - Answer- a. 805-830nm and 980nm
The diode laser tip is initiated for tissue ablation. The diode laser in un-initiated (not
touching tissue) for photobiomodulation.
a. The first statement is true.
b. The second statement is false.
c. Both statements are true.
d. Both statements are false. - Answer- c. Both statements are true.
You have a patient that presents with pigmented bacteria from periodontal disease.
Which of the following lasers is indicated for treatment?
a. Ho:YAG
, b. Er,Cr:YSGG
c. Nd:YAG
d. Er:YAG - Answer- c. Nd:YAG
The Ho:YAG delivers lasers with ____ wavelengths than Nd:YAG. The Ho:YAG is ____
for urologic conditions. (Halket said in lecture she wouldn't ask about Ho:YAG)
a. Shorter, indicated
b. Longer, contraindicated
c. Longer, indicated
d. Shorter, contraindicated - Answer- c. Longer, indicated
Er:YAG lasers are used for both hard AND soft tissue. The Er:YAG is 300 times more
absorbed in water than Er,Cr:YSGG.
a. The first statement is true. The second statement is false.
b. Both statements are false.
c. The first statement is false. The second statement is true.
d. Both statements are true - Answer- d. Both statements are true
What is an advantage of using an Nd:YAG laser for a gingivectomy versus a traditional
scalpel?
a. There are better results when using an Nd:YAG laser.
b. The laser creates coagulation of the tissues and there is minimal pain and
inflammation
c. Patients prefer a scalpel.
d. There are no advantages over the traditional scalpel method. - Answer- b. The laser
creates coagulation of the tissues and there is minimal pain and inflammation
5. What is an example of an InGaN 405 nm laser?
a. Bar code reader.
b. Gun sights.
c. Holography.
d. Blu-ray disc. - Answer- d. Blu-ray disc.
The smaller the diameter of a laser beam, the _____ the power density (rafi)
a. Lower
b. Higher
c. No change - Answer- b. Higher
A laser is placed on a focal point but then the beam is held back too far away, what are
the consequences? (rafi)
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