2025/2026 EXAM COMPLETE REAL QUESTIONS AND
CORRECT DETAILED ANSWERS (EXPERT VERIFIED
ANSWERS) NEWEST UPDATED VERSION |ALREADY
GRADED A+
The prime safety concern(s) when using dental lasers is
(are): A. Coolant application and anodized instruments
B. Non-reflective instruments
C. Eye protection and plume control
D. Laser safety officer present
A. Coolant application and anodized instruments
B. Non-reflective instruments
Answer- C. Eye protection and plume control
D. Laser safety officer present
Which of the following lasers is typically used for
intraoral soft tissue removal?
A. Ruby lasers
B. Excimer lasers
C. Helium-neon lasers
D. Galas lasers
A. Ruby lasers
,B. Excimer lasers
C. Helium-neon lasers
Answer- D. Galas lasers
Device-specific indications for use are found in:
A. Professional information section of the operating
manual
B. American National Standard for the Safe Use of Lasers
in Health Care Facilities
C. Case reports
D. Laser clinical textbooks
A. Professional information section of the operating
manual
Answer- B. American National Standard for the Safe
Use of Lasers in Health Care Facilities
C. Case reports
D. Laser clinical textbooks
An Er, Cr: YSGG laser is used within the sulcus at 1 W,
20 Hz, 10% water, 20% air to approximately 60 degrees
C. At these parameters, what would be expected?
A. Tissue welding
,B. Vaporization
C. Protein denaturation
D. Carbonization
A. Tissue welding (incision) (70-90º)
B. Vaporization (no pain) (100-180º)
Answer- C. Protein denaturation (kill bacteria) (50-
60º)
D. Carbonization (bad, pain) (200º)
The prerequisite to be a laser safety officer is:
A. Licensed dentist
B. Laser manufacturer representative
C. Properly trained team member
D. Registered dental hygienist
A. Licensed dentist
B. Laser manufacturer representative
Answer- C. Properly trained team member
D. Registered dental hygienist
Thermal relaxation is the length of time to:
A. Heat tissue between successive energy pulses
B. Maintain constant temperature of lased tissue
, C. Confine heat to lased tissue
D. Dissipate heat away from lased tissue
A. Heat tissue between successive energy pulses
B. Maintain constant temperature of lased tissue
C. Confine heat to lased tissue
D. Dissipate heat away from lased tissue
Which of the following can be an airborne contaminant in
a laser-generated plume?
A. Excessive CO2 release
B. Nonionizing radiation
C. Viruses
D. Ionizing radiation
A. Excessive CO2 release
B. Nonionizing radiation
C. Viruses
D. Ionizing radiation
When exposing implants, lasers have which advantage
over conventional instrumentation?
A. Ease of assessing periodontal status
B. More accurate placement of the implant fixture