DES 2100 MIDTERM EXAM QUESTIONS
AND ANSWERS
it is abundant and smells like cloves. frequently used for temporary fillings,
temporary cement and intermediate bases - ANSWER Zinc Oxide Eugenol
(ZOE)
when the powdered metal (which is predominantly silver (Ag) and tin (Sn) is
mixed with the liquid mercury (Hg) it is called ______________
_______________ - ANSWER dental amalgam
which side of the mixing paper pad do you use to mix cement on? - ANSWER
shiny side
a material constructed directly within the patient's mouth - ANSWER direct
restorative material
a dental material constructed outside of the patient's mouth - ANSWER
indirect restorative material
what is the process in which a resin material changes from a pliable state into a
hardened restoration? - ANSWER addition polymerization
interproximal caries/restorations on posterior teeth - ANSWER class II
an important sign that working time has ended? - ANSWER loss of gloss
used for direct pulp capping. encourages secondary dentin when cavity prep
leaves little dentin or micro pulpal exposure. a calcium hydroxide liner -
ANSWER dycal
the group of dental materials with a broad range of uses; the highest restrictions
for the material and mixing and handling has the greatest effect on this category
of materials. - ANSWER dental cement
, a metal alloy of which one of the elements is mercury - ANSWER amalgam
- the occlusal surfaces of molars and premolars
- the occlusal two thirds of the buccal and lingual surfaces of molars
- the lingual surfaces of anterior teeth - ANSWER class I
this type of cement contains Polyacrylic acid and glass powder. it releases FL2
(fluoride) - ANSWER glass ionomer
components of the powdered metal alloy for a dental amalgam contain all of the
following EXCEPT which one?
copper, zinc, silver, aluminum, tin - ANSWER aluminum
the four factors affecting composite placement - ANSWER 1. depth of cure - 3
mm thick
2. incremental addition - helps compensate for polymerization shrinkage
3. air inhibition - a sticky layer that chemically bond to layer
4. double carbon bonds - only 50% react leaving C=C available to bonf with a
new material
the portion of a fixed partial denture (bridge) that represents the missing tooth -
ANSWER pontic
how many classifications of caries and restorations are there? - ANSWER VI
- this cement has a high RESIN content and small filler particles
- it sets by POLYMERIZATION and comes as light cured, chemically cured, or
dual cured
- they are great for luting poorly fitting crowns - ANSWER composite cement
this material contains a RESIN matrix and a combination of larger and smaller
filler particles - ANSWER hybrid composite
a filling requires that a moderate amount of tooth structure remains. what type
of restoration is needed when a substantial tooth structure is missing? -
ANSWER crown
- requires a cool glass slab for mixing to dissipate heat
AND ANSWERS
it is abundant and smells like cloves. frequently used for temporary fillings,
temporary cement and intermediate bases - ANSWER Zinc Oxide Eugenol
(ZOE)
when the powdered metal (which is predominantly silver (Ag) and tin (Sn) is
mixed with the liquid mercury (Hg) it is called ______________
_______________ - ANSWER dental amalgam
which side of the mixing paper pad do you use to mix cement on? - ANSWER
shiny side
a material constructed directly within the patient's mouth - ANSWER direct
restorative material
a dental material constructed outside of the patient's mouth - ANSWER
indirect restorative material
what is the process in which a resin material changes from a pliable state into a
hardened restoration? - ANSWER addition polymerization
interproximal caries/restorations on posterior teeth - ANSWER class II
an important sign that working time has ended? - ANSWER loss of gloss
used for direct pulp capping. encourages secondary dentin when cavity prep
leaves little dentin or micro pulpal exposure. a calcium hydroxide liner -
ANSWER dycal
the group of dental materials with a broad range of uses; the highest restrictions
for the material and mixing and handling has the greatest effect on this category
of materials. - ANSWER dental cement
, a metal alloy of which one of the elements is mercury - ANSWER amalgam
- the occlusal surfaces of molars and premolars
- the occlusal two thirds of the buccal and lingual surfaces of molars
- the lingual surfaces of anterior teeth - ANSWER class I
this type of cement contains Polyacrylic acid and glass powder. it releases FL2
(fluoride) - ANSWER glass ionomer
components of the powdered metal alloy for a dental amalgam contain all of the
following EXCEPT which one?
copper, zinc, silver, aluminum, tin - ANSWER aluminum
the four factors affecting composite placement - ANSWER 1. depth of cure - 3
mm thick
2. incremental addition - helps compensate for polymerization shrinkage
3. air inhibition - a sticky layer that chemically bond to layer
4. double carbon bonds - only 50% react leaving C=C available to bonf with a
new material
the portion of a fixed partial denture (bridge) that represents the missing tooth -
ANSWER pontic
how many classifications of caries and restorations are there? - ANSWER VI
- this cement has a high RESIN content and small filler particles
- it sets by POLYMERIZATION and comes as light cured, chemically cured, or
dual cured
- they are great for luting poorly fitting crowns - ANSWER composite cement
this material contains a RESIN matrix and a combination of larger and smaller
filler particles - ANSWER hybrid composite
a filling requires that a moderate amount of tooth structure remains. what type
of restoration is needed when a substantial tooth structure is missing? -
ANSWER crown
- requires a cool glass slab for mixing to dissipate heat
