Operative Quiz 4/6 and Test III Flashcards
T/F
In order to treatment plan, Diagnostic Data such as Pt exam/charting, medical condition, periodontal condition, Caries/CRA, Habits/diet, Occlusion,
Radiographs, Diagnostic study models, face bow records, Diagnodent caries laser detection, trans-illumination, and electric pulp vitality are needed
True
Before the Dentin is invaded, OHI, etc. can be done for Prevention. What 3 things can be done for Remineralization?
Fluoride rinses
Fluoride trays
CAMBRA balance
Once the DEJ is invaded, caries progress ______, so must restore
rapidly
Name 5 Available Restorative material that can be used.
Composites
Amalgam
Glass Ionomers
Gold
Ceramic
Composites have great ______ but poor ______.
Aesthetics
Wear resistance
What material isn’t generally used for Class II’s unless it is very temporary?
*has the worst wear of any restorative matl
Glass Ionomer
T/F
Ceramics have great aesthetics, high cost, and increasingly better _____.
Longevity
not a disadvantage
If a large carious lesion has asymptomatic pulp, what is a good restoration route?
Crown
*vitality test/x-rays also a must
In an outline, the isthmus must be _____ mm.
less than or equal to 1
*in reality 1 ish
The explorer 1 mm past the tip is ____ mm
- 5 mm
* facial/lingual extensions of a slot
Faciolingually, the isthmus should be _____.
Centered
The Contact Area is usually ______ to the Central Groove
Facial
Why is the facial “s curve” more pronounced?
Must extend to open up occlusal contact, which is Greater facially.
Why do retention features have to be in Dentin?
It is more resilient and can absorb more energy.
The width of the Box is ____ in Premolars and _____ in Molars.
- 0 mm
1. 2 - 1.5 mm
The minimum depth of the pulpal floor in an Amalgam prep is _____ mm
How deep at walls?
- 5
2. 0 mm
T/F
It is not permissible to have enamel on the pulpal floor
False
*enamel ok for pulpal floor, not retention grooves
T/F
Enamel islands are permissible on the pulpal floor.
When should they be removed?
True
If stained underneath
T/F
Retention grooves should be cut into the axial wall directly
False
*should be a continuation of axial wall
How far should retention grooves go?
From Gingival floor to Pulpal floor
T/F
The axio-pulpal line angle should be rounded
True
The 7 Orderly Steps of Cavity Preparation:
Outline form
Retention
Resistance
Convenience
Caries removal in Dentin
Finish enamel walls
Cleane cavity prep
T/F
You should start your slot just INSIDE the marginal ridge
True
How wide is the tip of a hoe?
1.2 mm
T/F
The axio-pulpal line angle should be beveled with a hatchet or 132-F diamond bur
True
T/F
Cutting the slot before the occlusal surface tends to remove less material
True
Where is the smallest bicuspid box?
Mesial 1st bicuspid
What premolar has a transverse ridge not to be crossed?
What else is unique about this preparation?
Mandibular 1st PM
pulpal floor sloped
The Isthmus in mandibular molars tend to be slightly _______.
Facial to central groove
What is important about cutting on a Maxillary molar?
Don’t hit oblique ridge
T/F
Amalgam is an insulating material
False
*non-insulating
T/F
Amalgam is considered an intracoronal restoration, however, extracoronal restorations are done when a pt can’t afford a crown.
True
Low-Copper Amalgam has ____% copper
High-Copper Amalgam has ____ % copper and has better _______.
2-5%
12-30%
Corrosion
What type of Amalgam has 20-50% greater longevity?
Zinc containing
*Less Gamma 2
Lathe cut Amalgam has _____
Spherical cut Amalgam hass _____
Normally we use _____
Lots of Mercury
Less Mercury
Admixture - gives us more working time
Ad-mixed, high copper, zinc containing Amalgam is called…
Spherical, high copper, no zinc, Less condensable Amalgam is called…
Dispersalloy
Tytin FC
T/F
There is no connection between MS, Chronic Fatigue Syndrome, etc, to Amalgam
True
Use ____ condensers first and _____ condensers last.
Small
Large
The advantage of Bonded Amalgams is Less Fracture, what is the disadvantage?
Corrosion won’t seal
T/F
Calcium Hydroxide Paste, Gluma (and resins), Glass Ionomers, etc can be liners and sealers
True
What are the 2 types of Tofflemires and where are they placed?
Straight - Facial
Angled - Lingual
The Matrix Band should be placed ____mm above the preparation
A wedge must cover at least ___mm below the gingival margin and always enters via the ____ side.
1 mm
1 mm
Lingual
What type of Matrix Band should be used for deep areas?
MOD
Use the ____ end of the Amalgam Carrier first
Small
Unter-triturated Amalgam is _____
Over triturated Amalgam is _____
Perfect is _____
too soft/dull
too dry/hard/hot
shiny/pliable
T/F
In order to avoid voids in box corners, use Lateral Condensation
True
The Hollenbeck Carver has a ____ shape, making it a good Amalgam carver
Bi-convex
The band should lift out gently at a ___ angle, and never use a ___ motion
45 degree
Sawing
T/F
Finishing/Polishing Amalgams prolongs the life of the restoration
True
*Decreases tarnish, rough surfaces that accumulate plaque
Finishing an Amalgam is used with a 7404 bur and you must wait for how long?
24 hours
Sealants have poor longevity and PRR has a ____ year lifespan.
Amalgam has a ____ year lifespan
5 year
10 year
T/F
It is fine if a cavo-surface ends at an opposing contact
False
Do not cut across the ______ of the Lower 1st ______.
Transverse ridge
Premolars
Do not cut across the ______ of the Upper ______.
Oblique Ridge
Permanent Molars
T/F
A small amount of undermined enamel is acceptable in a Composite Preparation
True
What is the biggest factor when determining Outline Form of a preparation?
Caries
Caries spread _____ once past the DEJ
laterally
An Outline Form must be extended due to caries or ________.
Decalcified Enamel
Amalgam outline form Converges, a Gold Inlay form ________.
Diverges
What 2 burs create Convergent Walls?
245
330
The minimum depth on an axial wall is _____ for adequate strength and _____ for molars.
- 0 mm
1. 2 mm
T/F
The thermal expansion of amalgam creates a lot of internal strain on tooth structure
True
The lack of an axio-pulpal line angle bevel can lead to…
Fracture
0.5 mm separation on the proximal extensions of a slot preparation is an example of ________ Form.
Convenience
*place matrix band, avoid damaging adjacent teeth, carving
T/F
Improvements in the strength of Amalgams have allowed new, more conservative design forms.
True
T/F
A slot preparation doesn’t need a pulpal floor
True
What does the Summitt Design for a slot prep add?
Occlusal dovetails
which are exaggerated extension grooves
Diamond burs ______, and Carbide burs _____
abrade
chip
Working on the right quadrant, the pt’s head turns to the ______.
If work on the left quandrants, the pt’s head turns to the _______.
Left
Right
T/F
An open Proximal Contact is an automatic failure
True
