PROSTHO DENTMAT PREBOARDS EXAM QUESTIONS
AND ANSWERS (VERIFIED SOLUTIONS)
Both porcelain and acrylic resin teeth are used in prosthesis. Both are secured to the
bade during processing. The CORRECT anchorage is
✓ Resin teeth are chemically bonded to the base and porcelain teeth are
chemically bonded to the base
A base metal partial denture alloy is RESISTANT to tarnish and corrosion because of its
✓ Passivity
For a more rigid structure, a base metal partial denture alloy should be selected rather
than a type IV gold because alloy has a
✓ Higher modulus elasticity
Smooth and shiny is a clinical sign of expansion of amalgam
✓ Smooth and shiny
Standard size of a gold foil
✓ 4 inches sq
A USP labeled for a bottle of mercury is
✓ Pure mercury
Silver is an ingredient of Dental porcelain
✓ No
First procedure in casting
✓ Preparation of wax pattern
Calcium Hydroxide is not an acidic dental cement
✓ Yes
What is the effect of drying the prepared tooth with alcohol and warm air rather than
wiping it dry before cementation of a crown
✓ Possibilities of pulp damage increased
,For a mandibular denture impression, action of which of the following muscles
determines the form of the lingual flange in the mola region
✓ Mylohyoid
The probable cause if a sore throat following insertion of a removable mandibular partial
denture is that
✓ The lingual flange of the partial denture is over extended
The part of a distal extension removable partial denture which provides the greatest
resistance to movement and torquing of the abutment teeth is the
✓ Base
When selecting a shade for a metal ceramic restoration,
✓ None
A primary consideration for full coverage if abutment teeth to be used in the construction
of a fixed partial denture is the
✓ Caries susceptibility of the patient
Two primary reasons for obtaining the most extensive area coverage for a mandibular
complete denture
✓ Increase the capacity of underlying structures to withstand the stress due to
biting force; and to increase the effectiveness of the seal
Excessive vertical dimension may result in
✓ Excessive trauma to the underlying supporting tissues
In order to obtain greater accuracy of dies, a polysulfide impression of prepared
abutment teethis taken directly with
✓ A tray which had been formed from a previously made cast of the patient
When two missing adjacent teeth Re replaced with a fixed partial denture, the
connectors usually be
✓ Rigid at both distal and mesial retainer
, Esthetic results attainable in a treatment plan involving malposed teeth and diastema
can be determined by
✓ Proper use of diagnostic cast
The usual reason for including a semirigid connector in fixed partial denture is to
✓ Reconcile alignment of non parallel abutment teeth without excessive reduction
A two stage impression technique may be used for partial denture construction because
it allows
✓ For resilient and non resilient tissue involved
protrusive interocclusal record is employed to
✓ Register condylar inclination
Two most common causes for complete denture clicks
✓ Excessive vertical dimension and poor denture retention
After partial dentures are processed and before removing them from the master casts,
possible errors in occlusion should be checked by
✓ Remounting the dentures on an articulator using the previous mounting
Repeated fracturing of a porcelain facing results primarily from
✓ An inadequately designed pontic casting
Centric relation is a ____ relationship
✓ Mandible to skull
All other conditions being normal, the ideal posterior pontic is constructed of
✓ Gold on the occlusal surface and glazed porcelain approximating the mucosa
The most important point to observe in making a hydrocolloid impression for a
removable partial denture is to
✓ Select a tray large enough to provide adequate thickness of hydrocolloid to avoid
tearing in areas of severe undercut
AND ANSWERS (VERIFIED SOLUTIONS)
Both porcelain and acrylic resin teeth are used in prosthesis. Both are secured to the
bade during processing. The CORRECT anchorage is
✓ Resin teeth are chemically bonded to the base and porcelain teeth are
chemically bonded to the base
A base metal partial denture alloy is RESISTANT to tarnish and corrosion because of its
✓ Passivity
For a more rigid structure, a base metal partial denture alloy should be selected rather
than a type IV gold because alloy has a
✓ Higher modulus elasticity
Smooth and shiny is a clinical sign of expansion of amalgam
✓ Smooth and shiny
Standard size of a gold foil
✓ 4 inches sq
A USP labeled for a bottle of mercury is
✓ Pure mercury
Silver is an ingredient of Dental porcelain
✓ No
First procedure in casting
✓ Preparation of wax pattern
Calcium Hydroxide is not an acidic dental cement
✓ Yes
What is the effect of drying the prepared tooth with alcohol and warm air rather than
wiping it dry before cementation of a crown
✓ Possibilities of pulp damage increased
,For a mandibular denture impression, action of which of the following muscles
determines the form of the lingual flange in the mola region
✓ Mylohyoid
The probable cause if a sore throat following insertion of a removable mandibular partial
denture is that
✓ The lingual flange of the partial denture is over extended
The part of a distal extension removable partial denture which provides the greatest
resistance to movement and torquing of the abutment teeth is the
✓ Base
When selecting a shade for a metal ceramic restoration,
✓ None
A primary consideration for full coverage if abutment teeth to be used in the construction
of a fixed partial denture is the
✓ Caries susceptibility of the patient
Two primary reasons for obtaining the most extensive area coverage for a mandibular
complete denture
✓ Increase the capacity of underlying structures to withstand the stress due to
biting force; and to increase the effectiveness of the seal
Excessive vertical dimension may result in
✓ Excessive trauma to the underlying supporting tissues
In order to obtain greater accuracy of dies, a polysulfide impression of prepared
abutment teethis taken directly with
✓ A tray which had been formed from a previously made cast of the patient
When two missing adjacent teeth Re replaced with a fixed partial denture, the
connectors usually be
✓ Rigid at both distal and mesial retainer
, Esthetic results attainable in a treatment plan involving malposed teeth and diastema
can be determined by
✓ Proper use of diagnostic cast
The usual reason for including a semirigid connector in fixed partial denture is to
✓ Reconcile alignment of non parallel abutment teeth without excessive reduction
A two stage impression technique may be used for partial denture construction because
it allows
✓ For resilient and non resilient tissue involved
protrusive interocclusal record is employed to
✓ Register condylar inclination
Two most common causes for complete denture clicks
✓ Excessive vertical dimension and poor denture retention
After partial dentures are processed and before removing them from the master casts,
possible errors in occlusion should be checked by
✓ Remounting the dentures on an articulator using the previous mounting
Repeated fracturing of a porcelain facing results primarily from
✓ An inadequately designed pontic casting
Centric relation is a ____ relationship
✓ Mandible to skull
All other conditions being normal, the ideal posterior pontic is constructed of
✓ Gold on the occlusal surface and glazed porcelain approximating the mucosa
The most important point to observe in making a hydrocolloid impression for a
removable partial denture is to
✓ Select a tray large enough to provide adequate thickness of hydrocolloid to avoid
tearing in areas of severe undercut
