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DASLE MN Training Exam Questions 100% Well Answered.
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What system has a tightening wrench to tighten and loosen the band? - Answer Automatrix What is the purpose of a wedge? How many do you need for an MOD restoration? - Answer To contour and hold the band securely, 2 wedges auto matrix is unique in that it has a wrench that does what? - A...

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  • August 9, 2024
  • 37
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • DASLE MN
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DASLE MN Training Exam Questions
100% Well Answered.
What system has a tightening wrench to tighten and loosen the band? - Answer Automatrix



What is the purpose of a wedge? How many do you need for an MOD restoration? - Answer To contour
and hold the band securely, 2 wedges



auto matrix is unique in that it has a wrench that does what? - Answer 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? - Answer Overhang or cupping



Class III & IV composites use what type of matrix system? - Answer Celluloid strip "Mylar"



wedges function is to? - Answer 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? - Answer inserted on the lingual side



what is used to insert the wedge? - Answer 110 howe pliers



The universal band when placed should extend _____ mm above the ________ surface? - Answer 1 ½
to 2 mm above the occlusal surface



what is T-band made from? - Answer stainless steel or copper



what is the universal retainer (tofflemire retainer) - Answer 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. - Answer 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? - Answer 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 _______________? - Answer The distal and below the height of contour



Which side of the tooth is the clamp placed on first? - Answer Lingual, this allows for a fulcrum to place
the clamp



List items that can be used to invert dental dam. - Answer 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
_______? - Answer 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? - Answer Lingual, this allows for a fulcrum to place
the clamp



List items that can be used to invert dental dam. - Answer Air, Plastic instrument (blunt instrument)
black spoon or, beavertail burnisher, Waxed floss



List the hole punch numbers for each type of tooth: - Answer 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. - Answer 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. - Answer Better patient management and protection
from debris, materials and liquids

Controls moisture

Decreases operator time

Effective barrier control for infection control

Used for RCT, sealants, restorations, whitening, not used for oral surgery



Why is a dental dam napkin used? - Answer Absorbs moisture, Latex allergies or reduce latex
sensitivity, Patient comfort



Which clamp is used for a class V restoration? - Answer Cervical clamp (butterfly) 9, 212, 214 etc.



Which dental frame is placed under the dam material? - Answer Plastic U-shaped frame due to being
radiolucent



Which dental frame is placed on the outside of the dam material? - Answer Youngs U-shaped metal
frame

Otsby plastic round frame

, What happens if the holes are punched too close together? - Answer the dam may tear and stretch.
stretched holes may leave the gingiva exposed and may cause leakage



What happens if the holes are punched too far apart? - Answer excess material is present between the
teeth. this may block the DDS vision or catch in instrumentation



What happens if the curve of the arch is punched too flat? Too narrow? - Answer If too flat or wide =
bunching on lingual

If too curved or narrow = folding on the facial



How far apart should the holes be spaced? - Answer 3.0-3.5 mm



Prior to the application of sealants, what are the teeth are cleaned with? - Answer Prophy brush and
non-fluoridated pumice, no oils (can interfere with the bonding process)



Which are etched longer, permanent or primary teeth? - Answer Primary teeth because they are
stronger and teeth with fluorosis



What is the composition of the etching material? - Answer 37% phosphoric acid (35-47%)



What is the best isolation technique when applying sealants? - Answer dental dam



Describe characteristics of an etched surface. - Answer Dull

Frosted

Chalky



List contra-indicators for sealant placement. - Answer Occlusal surface is smooth and easy to clean

Decay on occlusal surface

Decay on interproximal surface

Restoration already in place

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