Cocneptial Research 2024 cocneptialresearch@gmail.com
, DASLE MN Comprehensive Exam
(2024) || With Questions & Answers
(100% Accurate)
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
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
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