Page | 1
DASLE MN Questions with Detailed Verified
Answers
What system has a tightening wrench to tighten and loosen the
band?
⼀Answer:⼀ Automatrix
What is the purpose of a wedge? How many do you need for an
MOD restoration?
⼀Answer:⼀ To contour and hold the band securely, 2 wedges
auto matrix is unique in that it has a wrench that does what?
⼀Answer:⼀ has no retainer to hold the band in place. the tightening
wrench is inserted into the coil and is turned clockwise to tighten the
band
What occurs if the wedge is not place properly?
⼀Answer:⼀ Overhang or cupping
Class III & IV composites use what type of matrix system?
⼀Answer:⼀ Celluloid strip "Mylar"
wedges function is to?
⼀Answer:⼀ insert into the lingual embrasure to hold the band firmly
against the gingival margin of the prep.
for posterior restoration, where is the wedge inserted?
, Page | 2
⼀Answer:⼀ inserted on the lingual side
what is used to insert the wedge?
⼀Answer:⼀ 110 howe pliers
The universal band when placed should extend _____ mm above
the ________ surface?
⼀Answer:⼀ 1 ½ to 2 mm above the occlusal surface
what is T-band made from?
⼀Answer:⼀ stainless steel or copper
what is the universal retainer (tofflemire retainer)
⼀Answer:⼀ a mechanical device that holds the matrix band snugly in
position. it's designed for class II amalgam restoration and
intermediate. It's positioned from the buccal surface of the tooth being
restored
Explain the rule for posterior teeth isolation.
⼀Answer:⼀ Isolate 1 to 2 teeth distal to the tooth being treated
(working tooth), and isolate 3 to 4 teeth mesial or 6 to 8 teeth for
better stability
Explain the rule for anterior teeth isolation. What is the exception
to the rule?
, Page | 3
⼀Answer:⼀ Isolate canine to canine, clamp may not be needed,
ligate between canine and 1st premolar
Anterior/cervical clamp may be used for Class V, endo tooth or
premolar clamps may be used
The bow of the dental dam clamp is placed towards the _____ and
the four points of the clamp are resting _______________?
⼀Answer:⼀ The distal and below the height of contour
Which side of the tooth is the clamp placed on first?
⼀Answer:⼀ Lingual, this allows for a fulcrum to place the clamp
List items that can be used to invert dental dam.
⼀Answer:⼀ Air, Plastic instrument (blunt instrument), black spoon or
beavertail burnisher, Waxed floss
the bow of the dental dam clam is placed towards the _____ and
the four points of the clamp are resting _______?
⼀Answer:⼀ towards the distal and the four points of the clamp are
resting below the height of contour
Which side of the tooth is the clamp placed on first?
⼀Answer:⼀ Lingual, this allows for a fulcrum to place the clamp
List items that can be used to invert dental dam.
⼀Answer:⼀ Air, Plastic instrument (blunt instrument) black spoon or,
beavertail burnisher, Waxed floss
, Page | 4
List the hole punch numbers for each type of tooth:
⼀Answer:⼀ 5 - Anchor Tooth (clamped tooth) or keyhole punch #5
(double punched if using a winged clamp)
4 - MX & MN molars
3 - MX & MN canines and premolars
2 - Maxillary anterior centrals & laterals
1 - Mandibular anterior centrals & laterals
List the steps for removal of the dental dam.
⼀Answer:⼀ Remove opposite ligature/anchor (Wedjet or floss)
Cut the dam septum on the facial side
Remove the clamp
Remove dam and frame
Check for pieces
Floss
Massage tissue
List the uses/advantages of using dental dam.
DASLE MN Questions with Detailed Verified
Answers
What system has a tightening wrench to tighten and loosen the
band?
⼀Answer:⼀ Automatrix
What is the purpose of a wedge? How many do you need for an
MOD restoration?
⼀Answer:⼀ To contour and hold the band securely, 2 wedges
auto matrix is unique in that it has a wrench that does what?
⼀Answer:⼀ has no retainer to hold the band in place. the tightening
wrench is inserted into the coil and is turned clockwise to tighten the
band
What occurs if the wedge is not place properly?
⼀Answer:⼀ Overhang or cupping
Class III & IV composites use what type of matrix system?
⼀Answer:⼀ Celluloid strip "Mylar"
wedges function is to?
⼀Answer:⼀ insert into the lingual embrasure to hold the band firmly
against the gingival margin of the prep.
for posterior restoration, where is the wedge inserted?
, Page | 2
⼀Answer:⼀ inserted on the lingual side
what is used to insert the wedge?
⼀Answer:⼀ 110 howe pliers
The universal band when placed should extend _____ mm above
the ________ surface?
⼀Answer:⼀ 1 ½ to 2 mm above the occlusal surface
what is T-band made from?
⼀Answer:⼀ stainless steel or copper
what is the universal retainer (tofflemire retainer)
⼀Answer:⼀ a mechanical device that holds the matrix band snugly in
position. it's designed for class II amalgam restoration and
intermediate. It's positioned from the buccal surface of the tooth being
restored
Explain the rule for posterior teeth isolation.
⼀Answer:⼀ Isolate 1 to 2 teeth distal to the tooth being treated
(working tooth), and isolate 3 to 4 teeth mesial or 6 to 8 teeth for
better stability
Explain the rule for anterior teeth isolation. What is the exception
to the rule?
, Page | 3
⼀Answer:⼀ Isolate canine to canine, clamp may not be needed,
ligate between canine and 1st premolar
Anterior/cervical clamp may be used for Class V, endo tooth or
premolar clamps may be used
The bow of the dental dam clamp is placed towards the _____ and
the four points of the clamp are resting _______________?
⼀Answer:⼀ The distal and below the height of contour
Which side of the tooth is the clamp placed on first?
⼀Answer:⼀ Lingual, this allows for a fulcrum to place the clamp
List items that can be used to invert dental dam.
⼀Answer:⼀ Air, Plastic instrument (blunt instrument), black spoon or
beavertail burnisher, Waxed floss
the bow of the dental dam clam is placed towards the _____ and
the four points of the clamp are resting _______?
⼀Answer:⼀ towards the distal and the four points of the clamp are
resting below the height of contour
Which side of the tooth is the clamp placed on first?
⼀Answer:⼀ Lingual, this allows for a fulcrum to place the clamp
List items that can be used to invert dental dam.
⼀Answer:⼀ Air, Plastic instrument (blunt instrument) black spoon or,
beavertail burnisher, Waxed floss
, Page | 4
List the hole punch numbers for each type of tooth:
⼀Answer:⼀ 5 - Anchor Tooth (clamped tooth) or keyhole punch #5
(double punched if using a winged clamp)
4 - MX & MN molars
3 - MX & MN canines and premolars
2 - Maxillary anterior centrals & laterals
1 - Mandibular anterior centrals & laterals
List the steps for removal of the dental dam.
⼀Answer:⼀ Remove opposite ligature/anchor (Wedjet or floss)
Cut the dam septum on the facial side
Remove the clamp
Remove dam and frame
Check for pieces
Floss
Massage tissue
List the uses/advantages of using dental dam.
