163 Dental Materials Test Questions with complete solution 2024/2025
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Course
DENTAL MATERIALS
Institution
DENTAL MATERIALS
163 Dental Materials Test Questions with complete solution 2024/2025 163 Dental Materials Test
What is the significance of using a hydrocolloid conditioner bath while processing a reversible hydrocolloid?
It liquefies the semisolid reversible hydrocolloid
What is the working condition of ...
163 Dental Materials Test
What is the significance of using a hydrocolloid conditioner bath while
processing a reversible hydrocolloid?
It liquefies the semisolid reversible hydrocolloid
What is the working condition of a polysulfide elastomeric material?
Lengthy mixing setting time
What are the various uses of preliminary impressions?
Custom trays, Diagnostic models, Provisional coverage
What is the benefit of placing the bulk of the material toward the anterior
palatal area of the impression tray while taking the maxillary preliminary
impression?
It prevents the alginate from flowing into the throat.
While seating a maxillary impression tray, an expanded function dental
assistant (EFDA) gently lifts the patient's lips out of the way. What could be
the possible reason for such an action?
It allows the material to flow into the vestibule
,While taking mandibular preliminary impression, what is the benefit of quickly
pressing the material down to the base of the tray after loading the tray?
It removes trapped air bubbles from the tray.
What are the characteristics of alginate?
It expands when it is stored in water. It cannot return to a sol state after
setting, It has difficulty withstanding elastic strain.
What are the benefits of polysiloxane paste used in preparing bite
registrations?
It is an odorless and tasteless material, It provides low resistance to biting
forces. It is dimensionally stable and gains stability over time
Which impression material has a very strong odor and will permanently stain
clothing?
Polysulfide
What are the properties of an addition silicone?
It has an acceptable odor and taste, It has an excellent stiffness and stability,
It has a short mixing time of 30-45 seconds.
An expanded function dental assistant is taking a wax bite registration of a
patient's teeth. Arrange the procedural steps in a sequence
, Instruct the patient to practice opening and closing the mouth normally. 2.
Place the wax over the biting surfaces of the teeth and check the length 3.
Place the softened wax against the biting surfaces of the teeth 4. Insruct the
patient to bite gently and naturally into the wax
While taking the impression of a patient's teeth, what changes will the dentist
make to the impression tray to cover the area for a patient with an unusually
high palate?
Add softened utility wax to the tray
When taking the maxillary preliminary impressions of a patient's teeth, which
technique will help a dentist to prevent the triggering of the gag reflex while
seating the impression tray?
Wiping the excess material with a cotton-tip applicator
Arrange the conditioning baths process involved in the hysteresis of a
reversible hydrocolloid in the correct sequence.
1. The semisolid material is liquefied using a hydrocolloid conditioner at 212°F
2. The preset thermostat automatically cools the temperature to 150°F. 3. The
storage bath cools the material, readying it for impression 4. The separate
bath is kept at 110 °F for tempering the material
What type of stock tray should a dentist use to obtain final impressions and
bite registrations at the same time?
Triple tray
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