Operative Quiz 4/18 Flashcards
Edentulism for those 65 yrs and older was 60% in 1957, what is it now?
Around 20%
What is the current prevalence of Root caries in those 75 and older?
Above 50%
3 causes of Root Caries (other than age, non-endentulism)
Abrasion (toothbrush)
Abfraction (grinding)
Erosion
What are 3 options for restorative material in Root Caries?
Amalgam
Composite
GI
Between Amalgam, Composite, and Glass Ionomer, what has the best bond?
What material is thermally insulating and more elastic?
What material has high acid solubility?
GI
Composite
GI
Amalgam, Composite, Glass Ionomer, which has undercuts and retention grooves?
Which has bevels?
Which has no prep?
Amalgam
Composite
GI
T/F
There are no specification requirements for GI
True
If there are Shallow defects in enamel, what is a good restorative material?
GI
What are the 3 different isolation techniques used with pts?
212 clamp
RDI
epi
Because of the wear rate, what type of GI is best used for Class V restorations?
Brand?
Resin-modified has better wear rate
GC Fuji II LC capsule
***LC means light cured
_______ acid is too strong to use with GI and the bond will be weakened.
_______ is used instead with GI
Phosphoric
Conditioner
Must do what 2 things to RRGI (Resin Ionomer) before use
Tap 3 times
Triturate
With GI Resin Ionomer, you should overfill the prep by ____%
20
A plastic instrument should be used with GI and swipe it with what?
Alcohol swab
The resin coat applied after GI is called?
OptiGuard
How long after a GI restoration must a pt wait before eating?
When anesthesia is gone
Someone that grinds teeth most likely has a Class V…
Abfraction
What would be the best restorative matl with a Class V Abfraction in aesthetic spot?
Composite
- better wearability than GI
- Flowable then paste - 3 layers
T/F
OptiGuard glaze can be applied over GI or composite, must be light cured and flossed as a final step
True
4 reasons Class V restorations are performed:
Caries
Abrasion
Abfraction
Erosion
*or combo
Cervical caries can be irregularly shaped and are commonly found below the…
CEJ
Chronic caries tend to be what color?
darker
T/F
Irradiation can cause caries to worsen
True
What cause of Class V’s tend to have a dished out appearance and are shallow and smooth?
Abrasion
A combination of abrasion and microfractures of Stress Corrosion is a Class V caused by…
Abfraction
In an abfraction Class V, the tooth is going through ______ strain.
Flexural
What does an Abraction Class V look like?
V - notch on wall
What increases the rate of Abfraction caused by grinding?
Low pH
What type of Class V is caused by chemical dissolution of enamel, appears translucent or polished?
Erosion
T/F
Erosion of teeth can be caused by anorexia or diet (lemons)
True
Class V lesions can be restored, ignored, combo treatments, or what 5 interventions?
GLUMA
Fluoride
ACP - amorphous calcium phosphate
Perio grafting
Occlusal adjustmentj/mouthguards
With Composite designs for Class V’s, retention grooves are only place where?
Dentin
In composite preps, _____ is beveled and ____ is not
Enamel
Dentin
T/F
Amalgam preps for Class V’s have bevels
False
When is the only time you should put instruments in an alcohol swab?
GI’s
*never composites
Dentin Conditioner for GI’s, aka…
should be applied for _____ seconds
What does it do?
Polyacrylic Acid
20
removes smear, increases bond strength
After s Dentin Conditioner is applied in a GI, what remains on the dentin?
Ca-collagen salt gel phase
*stronger than GI bond to tooth
For Class V’s, GI should be applied in how many layers?
Composite?
1
3
Adding a single bulk of composite material in a Class V will result in what?
Contraction Gap
*then microleakage, failure
When forming composite on the tooth, always go from ____ to _____.
When using diamond burs, always go from ____ to ______.
composite, enamel
enamel, composite
SoflexF should be used ____ and SoflexEF should be used _____.
wet
dry
Proper intervention if pt very sensitive and No Occlusal Interferences?
What if not sensitive?
chemotherapeutics
fluoride varnish
Erosion with toothache in older individual (65) best intervention:
If 95 and poor?
root canal and crown
extraction (or endo/crown)
What attaches the Soflex disc to the handpiece?
Mandrel
