General Chairside Dental Materials Exam
Questions and Answers 100% Correct!!
Scrap amalgam should be stored
A. in a dry, airtight container.
B. in a red biohazard bag.
C. in the regular garbage.
D. in developer solution. - ✔✔a
The dental assistant is attempting to replicate the patient's centric relationship
for the laboratory technician. Which of the following will BEST accomplish this
purpose?
A. Preliminary impression
B. Occlusal registration
C. Full arch final impression
D. Diagnostic model - ✔✔b
Which of the following materials is ranked the LEAST scratch-resistant on the
Mohs hardness scale?
A. Gold alloy
B. Aluminum oxide
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,C. Porcelain
D. Amalgam - ✔✔a
Which of the following is used to extend an impression tray to accommodate a
larger arch?
A. Utility wax
B. Baseplate wax
C. Boxing wax
D. Casting wax - ✔✔a
Which of the following BEST describes the correct ratio of powder to liquid for
an adult mandibular alginate impression?
A. 1:1
B. 2:3
C. 3:3
D. 2:2 - ✔✔d
Which of the following will prevent excess material from going to the back of
the patient's mouth while taking a maxillary alginate impression?
A. The posterior border of the impression tray is seated first.
B. The patient raises the tongue to the roof of the mouth.
C. The anterior border of the impression tray is seated first.
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, D. Additional material is put on the occlusal surfaces of the teeth. - ✔✔a
The dental assistant is using an abrasive to remove stains and soft deposits from
the tooth surface. Which of the following will DECREASE the rate of abrasion?
A. Increase in pressure
B. Use of water
C. Increase in speed
D. Use of large grit - ✔✔b
The dental assistant is working with reversible hydrocolloid impression material
and needs to store the material. Which of the following will BEST maintain the
liquefied material?
A. Liquefaction bath
B. None of the above.
C. Tempering bath
D. Storage bath - ✔✔d
Which of the following is the MOST common wax used to hold artificial teeth in
place during denture fabrication?
A. Boxing wax
B. Sticky wax
C. Utility wax
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©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
Questions and Answers 100% Correct!!
Scrap amalgam should be stored
A. in a dry, airtight container.
B. in a red biohazard bag.
C. in the regular garbage.
D. in developer solution. - ✔✔a
The dental assistant is attempting to replicate the patient's centric relationship
for the laboratory technician. Which of the following will BEST accomplish this
purpose?
A. Preliminary impression
B. Occlusal registration
C. Full arch final impression
D. Diagnostic model - ✔✔b
Which of the following materials is ranked the LEAST scratch-resistant on the
Mohs hardness scale?
A. Gold alloy
B. Aluminum oxide
Page 1 of 17
©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
,C. Porcelain
D. Amalgam - ✔✔a
Which of the following is used to extend an impression tray to accommodate a
larger arch?
A. Utility wax
B. Baseplate wax
C. Boxing wax
D. Casting wax - ✔✔a
Which of the following BEST describes the correct ratio of powder to liquid for
an adult mandibular alginate impression?
A. 1:1
B. 2:3
C. 3:3
D. 2:2 - ✔✔d
Which of the following will prevent excess material from going to the back of
the patient's mouth while taking a maxillary alginate impression?
A. The posterior border of the impression tray is seated first.
B. The patient raises the tongue to the roof of the mouth.
C. The anterior border of the impression tray is seated first.
Page 2 of 17
©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
, D. Additional material is put on the occlusal surfaces of the teeth. - ✔✔a
The dental assistant is using an abrasive to remove stains and soft deposits from
the tooth surface. Which of the following will DECREASE the rate of abrasion?
A. Increase in pressure
B. Use of water
C. Increase in speed
D. Use of large grit - ✔✔b
The dental assistant is working with reversible hydrocolloid impression material
and needs to store the material. Which of the following will BEST maintain the
liquefied material?
A. Liquefaction bath
B. None of the above.
C. Tempering bath
D. Storage bath - ✔✔d
Which of the following is the MOST common wax used to hold artificial teeth in
place during denture fabrication?
A. Boxing wax
B. Sticky wax
C. Utility wax
Page 3 of 17
©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
