DANB CDA DANB CDA Dental Instruments and Equipment 3

Question 1

What does a dental unit waterline (DUWL) require to ensure patient safety?

Accepted Answer

Regular flushing, chemical treatment, and water quality testing

Answer

DUWL safety requires daily flushing at start/end of day, periodic chemical treatment with approved solutions, and regular microbial testing to meet CDC water quality standards.

Question 2

Which instrument is used to place a rubber dam by stretching it over the clamp and through the punched holes?

Accepted Answer

Dental dam forceps

Answer

Dental dam forceps (retainer forceps) are used to carry the clamp to the mouth and place it on the anchor tooth, and also to remove it after the procedure.

Question 3

What does the OSHA Bloodborne Pathogens Standard require regarding contaminated sharps?

Accepted Answer

Dispose of sharps in puncture-resistant containers immediately

Answer

OSHA requires contaminated sharps to be discarded immediately or as soon as feasible in closable, puncture-resistant, leak-proof sharps containers.

Question 4

What is the purpose of a bite registration material in dentistry?

Accepted Answer

To record the occlusal relationship between maxillary and mandibular teeth

Answer

Bite registration materials (such as polyvinyl siloxane or zinc oxide eugenol paste) record the exact centric occlusion relationship between the arches for use in the laboratory.

Question 5

What is the HVE (high-volume evacuator) used for during dental procedures?

Accepted Answer

To remove large volumes of fluids, aerosols, and debris from the oral cavity

Answer

The HVE removes blood, saliva, water, and aerosols from the oral cavity at high flow rates, improving visibility and reducing aerosol contamination in the operatory.

DANB CDA Test Practice Test

DANB CDA Test Practice Test

DANB CDA DANB CDA Dental Instruments and Equipment 3