Mn DASLE 2023 review with
complete solutions
Why and where is it necessary to add wax (wax trimming) two an alginate
tray? - answer To add length of the tray, protect the tissues from injuries,
add pallet , ads border in order to buckle muscles
What is the correct operator position when taking a maxillary impression
and a mandibular impression? - answer For maxillary impression must be
at 11 to 12 o'clock position behind patient for mandibular at 7 o'clock to 8
o'clock in front of patient
How do you avoid excess material from going down a patient's throat
when taking a maxillary impression? - answer Head forward, seat
posterior first before pushing anterior
Why is the patient instructed to lift and extrude their tongue on taking
mandibular impression? - answer To ensure the flange is captured
What type of tray/trays are used for an alginate impression? - answer
Plastic and metal perforated trays
Why are perforated trays used for alginate? - answer Locks the material
into the tray
How can an accurate impression of the anterior buccal fold (vestibule) be
obtained - answer Pre-coating with Alginate
How is the setting time for Alginet lengthened and shortened? - answer
To shorten time use warm water
To lengthen time use cold water
,What causes drags? - answer Movement while material is setting up or
premature set
What is the cause of folds? - answer Alginate that was painted on teeth
sets before tray was seated
What causes fine bubbles throughout the impression - answer Patient
gagged
What causes buccal surface/aspects protruding on both sides of the tray -
answer Tray is too narrow
What causes mandibular, retromolar pad not visible on impression -
answer Tray is too short
Why is mouthwash used in alginate impressions? (4) - answer Remove
food in debris, helps prevent bubbles, cuts the viscosity of saliva, helps
prevent gagging on the maxillary.
How many scoops of powder is used for mandibular impression? - answer
2:2
How many scoops of powder are used in maxillary impressions? - answer
3:3
How do you load a mandibular tray? - answer From the back
How do you load a maxillary tray? - answer From the lingual side
Auto matrix is unique, in that it has a wrench that does whist - answer
Tightens and loosens the band
Wedge function is to - answer Contour, and hold the band securely
, Improper placement of the wedge can cause? - answer Overhang and
cupping
Class III & IV composit use what matrix? How do you contour the type of
matrix? - answer Mylar strip, and mirror handle
Correct band placement is how much above the occlusal surface? - answer
1 1/2 to 2mm above
Define extrinsic stain - answer Occurs on external surfaces of the teeth.
Can be removed by brushing, scaling and polishing. Examples are tea and
coffee.
Define intrinsic Stain - answer occurs within the tooth structure. Cannot
be removed. Can be fixed with crowns, veneer, or composite.
Define endogenous stain - answer developed or originated from within
the tooth during development, such as trauma, hereditary and infections
Define exogenous stain - answer developed or originated from sources
outside of the tooth. Acquired after irruption.
Characteristics of yellow stains - answer Presence of plaque common on
buckle of maxillary molar's, poor, oral hygiene, and found on all ages
Characteristics of green staining - answer Light or yellowish green
located on cervical 1/3 of maxillary anterior. Comes from retention of
Nasmyths membrane caused by Porral hygiene, one bacteria or fungi are
retained
Characteristics of black or black line stain - answer Find line 1 mm above
the gingival margin, common in children and females, found frequently
and clean males caused by natural tendencies, Chromeo genic bacteria, or
certain drugs containing iron
complete solutions
Why and where is it necessary to add wax (wax trimming) two an alginate
tray? - answer To add length of the tray, protect the tissues from injuries,
add pallet , ads border in order to buckle muscles
What is the correct operator position when taking a maxillary impression
and a mandibular impression? - answer For maxillary impression must be
at 11 to 12 o'clock position behind patient for mandibular at 7 o'clock to 8
o'clock in front of patient
How do you avoid excess material from going down a patient's throat
when taking a maxillary impression? - answer Head forward, seat
posterior first before pushing anterior
Why is the patient instructed to lift and extrude their tongue on taking
mandibular impression? - answer To ensure the flange is captured
What type of tray/trays are used for an alginate impression? - answer
Plastic and metal perforated trays
Why are perforated trays used for alginate? - answer Locks the material
into the tray
How can an accurate impression of the anterior buccal fold (vestibule) be
obtained - answer Pre-coating with Alginate
How is the setting time for Alginet lengthened and shortened? - answer
To shorten time use warm water
To lengthen time use cold water
,What causes drags? - answer Movement while material is setting up or
premature set
What is the cause of folds? - answer Alginate that was painted on teeth
sets before tray was seated
What causes fine bubbles throughout the impression - answer Patient
gagged
What causes buccal surface/aspects protruding on both sides of the tray -
answer Tray is too narrow
What causes mandibular, retromolar pad not visible on impression -
answer Tray is too short
Why is mouthwash used in alginate impressions? (4) - answer Remove
food in debris, helps prevent bubbles, cuts the viscosity of saliva, helps
prevent gagging on the maxillary.
How many scoops of powder is used for mandibular impression? - answer
2:2
How many scoops of powder are used in maxillary impressions? - answer
3:3
How do you load a mandibular tray? - answer From the back
How do you load a maxillary tray? - answer From the lingual side
Auto matrix is unique, in that it has a wrench that does whist - answer
Tightens and loosens the band
Wedge function is to - answer Contour, and hold the band securely
, Improper placement of the wedge can cause? - answer Overhang and
cupping
Class III & IV composit use what matrix? How do you contour the type of
matrix? - answer Mylar strip, and mirror handle
Correct band placement is how much above the occlusal surface? - answer
1 1/2 to 2mm above
Define extrinsic stain - answer Occurs on external surfaces of the teeth.
Can be removed by brushing, scaling and polishing. Examples are tea and
coffee.
Define intrinsic Stain - answer occurs within the tooth structure. Cannot
be removed. Can be fixed with crowns, veneer, or composite.
Define endogenous stain - answer developed or originated from within
the tooth during development, such as trauma, hereditary and infections
Define exogenous stain - answer developed or originated from sources
outside of the tooth. Acquired after irruption.
Characteristics of yellow stains - answer Presence of plaque common on
buckle of maxillary molar's, poor, oral hygiene, and found on all ages
Characteristics of green staining - answer Light or yellowish green
located on cervical 1/3 of maxillary anterior. Comes from retention of
Nasmyths membrane caused by Porral hygiene, one bacteria or fungi are
retained
Characteristics of black or black line stain - answer Find line 1 mm above
the gingival margin, common in children and females, found frequently
and clean males caused by natural tendencies, Chromeo genic bacteria, or
certain drugs containing iron
