Dental Materials Final Study Material
Exam 2024 | Dental Materials Actual
Exam Update 2024 Questions and
Correct Answers Rated A+
List the three types of impressions that would be taken in a dental
office. - ANSWER-preliminary
final
occlusal
Describe the types of impression trays and their characteristics of use.
- ANSWER-quadrant trays- impressions of specific quadrant of mouth
section trays- impressions of specific sections of the mouth
full arch- impression of the maxillary or mandibular arches of the
mouth
Discuss hydrocolloid impression materials, and describe their use, and
application of material. - ANSWER-hydrocolloid meaning water a
gelatinous substance
solid changed by chemical changes/ factor
Discuss elastomeric impression materials, and describe their use,
mixing techniques, and application of material. - ANSWER-
polysulifide- long working setting time
polyether- better mechanical
polysiloxane- high stability, low odor, low tear resistance
silocane- condensation easy mix
Describe the importance of an occlusal registration and its use. -
ANSWER-accurate impression of the prepared teeth
A(n) ________ is a gelatinous material used to obtain impressions. -
ANSWER-colloid
,__________ is the process of using your fingers to achieve a closer
adaptation of the edges of an impression. - ANSWER-border molding
A(n) ________ material has elastic properties and is made from
rubber. - ANSWER-elastomeric
A foundation or basic ingredient of a material is the ________. -
ANSWER-base
To have something _____ is to have it centered, such as your
maxillary teeth centered over your mandibular teeth. - ANSWER-
centric
________ is a gelatin-type material derived from seaweed. -
ANSWER-agar
________ is the loss of water, causing shrinkage. - ANSWER-
synthesis
__________ is to bring a material to a desired temperature and
consistency. - ANSWER-tempering
__________ describe a property of fluids with a high resistance to
flow. - ANSWER-viscous
__________ is the material of choice in dentistry for preliminary
impressions. - ANSWER-alginate
__________is to transform a material from one one physical state to
another. - ANSWER-hystorsis
______ means water. - ANSWER-hydro
A(n) __________ is a reproduction of someone's bite with the use of
wax or elastomeric material. - ANSWER-occlusal registration
,A(n) _________ is a substance that modifies or increases the rate of a
chemical reaction. - ANSWER-latalyst
_________ is the absorption of water, causing an object to swell. -
ANSWER-imbibtion
An impression would be considered a ________. - ANSWER-negative
reproduction
Of the three classifications of impressions, which of these would be
considered an expanded function for the certified dental assistant? -
ANSWER-irreversible hydrocolliod
Which of the three classifications of impressions would be used by the
dental lab tech for the occlusal relationship? - ANSWER-bite
registration
Which type of stock tray would you select to cover half of an arch? -
ANSWER-quadrant
Which type of tray allows impression material to mechanically lock on?
- ANSWER-perforated
Which type of tray is constructed to fit the mouth of a specific patient?
- ANSWER-custom
__________ is used to extend the length of a tray to accommodate
third molars. - ANSWER-rope wax
The organic substance of hydrocolloid material is _________. -
ANSWER-seaweed
Why would a fast-set alginate be selected for taking a preliminary
impression? - ANSWER-the patient has a strong gag reflex
Give the powder/water ratio for a maxillary impression. - ANSWER-3
scoops of powder to 3 measures or water
, Hydro means ________. - ANSWER-water
Another name for irreversible hydrocolloid is ___________. -
ANSWER-alginate
How is irreversible hydrocolloid mixed? - ANSWER-mixing bowl
Where is the reversible hydrocolloid material placed before the
impression is taken? - ANSWER-patient tray
Elastomeric materials would be selected for what type(s) of
impression? - ANSWER-final
How are elastomeric materials supplied? - ANSWER-paste
cartridge
putty
Which viscosity of a final impression material is applied first to the
prepared tooth or teeth? - ANSWER-light body
Another name for polysulfide is _______. - ANSWER-rubber base
What would the dentist use to express the light-body impression
material around a prepared tooth? - ANSWER-extruder with tip
Discuss the types of safety precautions that should be taken when
working in the dental laboratory. - ANSWER-spatula and pad
List the types of equipment commonly found in a dental laboratory,
and describe their use. - ANSWER-baseplate wax
Define dental models, and explain their use in dentistry. - ANSWER-
gauze tray
Discuss gypsum products and their use in fabricating dental models. -
ANSWER-warmed
Exam 2024 | Dental Materials Actual
Exam Update 2024 Questions and
Correct Answers Rated A+
List the three types of impressions that would be taken in a dental
office. - ANSWER-preliminary
final
occlusal
Describe the types of impression trays and their characteristics of use.
- ANSWER-quadrant trays- impressions of specific quadrant of mouth
section trays- impressions of specific sections of the mouth
full arch- impression of the maxillary or mandibular arches of the
mouth
Discuss hydrocolloid impression materials, and describe their use, and
application of material. - ANSWER-hydrocolloid meaning water a
gelatinous substance
solid changed by chemical changes/ factor
Discuss elastomeric impression materials, and describe their use,
mixing techniques, and application of material. - ANSWER-
polysulifide- long working setting time
polyether- better mechanical
polysiloxane- high stability, low odor, low tear resistance
silocane- condensation easy mix
Describe the importance of an occlusal registration and its use. -
ANSWER-accurate impression of the prepared teeth
A(n) ________ is a gelatinous material used to obtain impressions. -
ANSWER-colloid
,__________ is the process of using your fingers to achieve a closer
adaptation of the edges of an impression. - ANSWER-border molding
A(n) ________ material has elastic properties and is made from
rubber. - ANSWER-elastomeric
A foundation or basic ingredient of a material is the ________. -
ANSWER-base
To have something _____ is to have it centered, such as your
maxillary teeth centered over your mandibular teeth. - ANSWER-
centric
________ is a gelatin-type material derived from seaweed. -
ANSWER-agar
________ is the loss of water, causing shrinkage. - ANSWER-
synthesis
__________ is to bring a material to a desired temperature and
consistency. - ANSWER-tempering
__________ describe a property of fluids with a high resistance to
flow. - ANSWER-viscous
__________ is the material of choice in dentistry for preliminary
impressions. - ANSWER-alginate
__________is to transform a material from one one physical state to
another. - ANSWER-hystorsis
______ means water. - ANSWER-hydro
A(n) __________ is a reproduction of someone's bite with the use of
wax or elastomeric material. - ANSWER-occlusal registration
,A(n) _________ is a substance that modifies or increases the rate of a
chemical reaction. - ANSWER-latalyst
_________ is the absorption of water, causing an object to swell. -
ANSWER-imbibtion
An impression would be considered a ________. - ANSWER-negative
reproduction
Of the three classifications of impressions, which of these would be
considered an expanded function for the certified dental assistant? -
ANSWER-irreversible hydrocolliod
Which of the three classifications of impressions would be used by the
dental lab tech for the occlusal relationship? - ANSWER-bite
registration
Which type of stock tray would you select to cover half of an arch? -
ANSWER-quadrant
Which type of tray allows impression material to mechanically lock on?
- ANSWER-perforated
Which type of tray is constructed to fit the mouth of a specific patient?
- ANSWER-custom
__________ is used to extend the length of a tray to accommodate
third molars. - ANSWER-rope wax
The organic substance of hydrocolloid material is _________. -
ANSWER-seaweed
Why would a fast-set alginate be selected for taking a preliminary
impression? - ANSWER-the patient has a strong gag reflex
Give the powder/water ratio for a maxillary impression. - ANSWER-3
scoops of powder to 3 measures or water
, Hydro means ________. - ANSWER-water
Another name for irreversible hydrocolloid is ___________. -
ANSWER-alginate
How is irreversible hydrocolloid mixed? - ANSWER-mixing bowl
Where is the reversible hydrocolloid material placed before the
impression is taken? - ANSWER-patient tray
Elastomeric materials would be selected for what type(s) of
impression? - ANSWER-final
How are elastomeric materials supplied? - ANSWER-paste
cartridge
putty
Which viscosity of a final impression material is applied first to the
prepared tooth or teeth? - ANSWER-light body
Another name for polysulfide is _______. - ANSWER-rubber base
What would the dentist use to express the light-body impression
material around a prepared tooth? - ANSWER-extruder with tip
Discuss the types of safety precautions that should be taken when
working in the dental laboratory. - ANSWER-spatula and pad
List the types of equipment commonly found in a dental laboratory,
and describe their use. - ANSWER-baseplate wax
Define dental models, and explain their use in dentistry. - ANSWER-
gauze tray
Discuss gypsum products and their use in fabricating dental models. -
ANSWER-warmed
