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Exam (elaborations)

DASLE MN Questions and Answers | Latest Update

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What system has a tightening wrench to tighten and loosen the band? -:- Automatrix What is the purpose of a wedge? How many do you need for an MOD restoration? -:- To contour and hold the band securely, 2 wedges auto matrix is unique in that it has a wrench that does what? -:- has no retain...

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  • September 12, 2024
  • 66
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • DASLE MN
  • DASLE MN
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2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!




DASLE MN Questions and Answers |
Latest Update
What system has a tightening wrench to tighten and loosen the band?

✓ -:- Automatrix




What is the purpose of a wedge? How many do you need for an MOD restoration?

✓ -:- To contour and hold the band securely, 2 wedges




auto matrix is unique in that it has a wrench that does what?

✓ -:- 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?

✓ -:- Overhang or cupping




Class III & IV composites use what type of matrix system?

✓ -:- Celluloid strip "Mylar"




wedges function is to?




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,2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!


✓ -:- 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?

✓ -:- inserted on the lingual side




what is used to insert the wedge?

✓ -:- 110 howe pliers




The universal band when placed should extend _____ mm above the ________ surface?

✓ -:- 1 ½ to 2 mm above the occlusal surface




what is T-band made from?

✓ -:- stainless steel or copper




what is the universal retainer (tofflemire retainer)

✓ -:- 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.



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,2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!


✓ -:- 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?

✓ -:- 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 _______________?

✓ -:- The distal and below the height of contour




Which side of the tooth is the clamp placed on first?

✓ -:- Lingual, this allows for a fulcrum to place the clamp




List items that can be used to invert dental dam.

✓ -:- 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 _______?


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, 2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!


✓ -:- 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?

✓ -:- Lingual, this allows for a fulcrum to place the clamp




List items that can be used to invert dental dam.

✓ -:- Air, Plastic instrument (blunt instrument) black spoon or, beavertail burnisher,

Waxed floss




List the hole punch numbers for each type of tooth:

✓ -:- 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.

✓ -:- Remove opposite ligature/anchor (Wedjet or floss)

Cut the dam septum on the facial side



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