Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

amalgam > bases and liners > Flashcards

bases and liners Flashcards

(45 cards)

Start Studying
1
Q

initial stage in cavity design

A

outline form and initial depth
resistance form
retention form
convenience form

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

final stage of cavity design

A 
remove any remaining enamel pits or fissures, infected dentin, or old rstoration
pulp protection
secondary retention and resitsance
finish enamel walls
clean, inspect, condition
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

intial depth of preps

A

.2mm-.8mm pulpally

from the DEJ usually .5mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

function of the dentin/pulp complex

A

formative (primary and secondary dentin)
defensive (reparative dentin)
nutritive (supplies vital cells
Sensory (protective

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what can the tooth feel

A

pain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

hydrodynamic theory

A 
micro movemnt of tubule fluids in response to:
osmolarity change
thermal change
desiccation
pressure change
high speed cutting
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

types of pulp health

A

normal/healthy
Pulpitis (reversible and irreversible)
Necrotic pulp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what to do to diagnose pulp status

A

patient symptoms
radiograph
clinical tests

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

characteristics of tooth pain

A 
location
intensity (pulp pain is sharp)
cause of onset
duration (does it linger)
does it hurt to bite
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is done in an emergency exam

A 
patient info about problem is gathered
examination
radiographs
diagnostics
final diagnosis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

clincial methods to test pulp

A 
cold/hot (is it present and for how long)
electric Pulp test (EPT)- pain/no pain giving a value 1-80
percussion test (perioligmanet)- pain or no pain
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

why use a liner or a base

A

protect pulp and minimize post op sensitivity
act as themral and chem barrier
electrical barrier
mechanical barrier
controls inflammation of the pulp
controls fluid movement
(restorative material do not agree with the pulp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is given to shallow amalgam tooth preps

A

Varnsish/sealer applied to the walls of the prep before amalgam

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is given to moderate depth preps

A

liners(ZOE or CaOH) for thermal protection and pulp mediation
varnish and amalgam on top

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is given to deep preps

A

light cured CaOH is placed in the deepest region which dentin was removed.
base of glass ionomer is used
amalgam with varnish on top

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what are liners

A

thin layers of material used to protect dentin from residual ractants diffusing out of restoration or oral fluids that may penetration leaky tooth restorations interfaces
aid with electrical insultion, thermal protection, pulpal treatment (sometimes)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Types of liners

A

solution (2-5 micrometers): copal varnish, adhesives
Suspension liners (20=25 micrometers): CaOH2
Cement liners (200-1000micrometers): GI
Eugenol liners: ZOE and B & T
dentin bonding systems/sealers:optibond solo plus/gluma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what are suspension liners

A

any liner based on water and have consituents suspended and not dissolved

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

depth of minimal caries

Study These Flashcards
A

if remaining dentin thick is greater than 2 mm

20
Q

what is used on minimal caries

Study These Flashcards
A

liner (copal varnish or adhesive liner)

amalgam

21
Q

smear layer

Study These Flashcards
A

thin later that can plug dentin tubule

22
Q

sealing of 1 and 2 later copal varnish

Study These Flashcards
A

1: 55% sealed
2: 85% sealed

23
Q

roll of bases

Study These Flashcards
A

provide themal protection for the pulp
supplement mech support for the restoration by distributing local stressed from the restoration across the underlying dentinal surface

24
Q

why do dental cements for bases mix at high powder;liquid rations

Study These Flashcards
A

increase final compressive strnegth

25
types of bases
``` ZnPO4 cement ZOE resin reinforced cement polycarboxylate cement Glass Ionomer Cement (most common) RMGI (most common) ```
26
descritpion of moderate caries
ideal prep does not remove all carious tissue | remaining dental tissue is .5-2.0mm
27
what to do with moderate caries prep
extend acces opening laterally until DEJ is not carious | Remove Carious dentin
28
why use a base in moderate caries
replace missing dentin | also use a liner
29
what type of reaction occures for bases and liners
Water based and acid-base reactions
30
mixing technquie for ZnPO4
4-5 drops of liquid plus powder devid powder into increments mix on cool slab (absorb heat of reaction, and can mix more powder now avoid moisture (decreases setting time) mix over large area ( slows setting) incorporate increments every 15 seconds until mixture can be picked up into a ball without sticking
31
mixing technique for CaOH liner
equal portions and apply to clean, dry cavity preparation
32
mixing Zn oxide eugenol liners
paste-paste: equal portions | Paste-liquid: 2-3 drops of liquid per scoop of powder
33
why use GI over ZNPO4
``` adheres to tooth (mineral and dynamic ionic) release fluoride clinical record of retention dimensionally stable biocompatible ```
34
why condition dentin
clear smear layer but leaves smear plugs
35
GI reaction
acid matrix dissolves periphery of glass Glass releases ions (Ca. Al, F) divalent Ca ions quickly chelate with acid polymer chains after 24-72 hours (al replaces Ca increases strength F release Acid side groups chelate with glass and HA
36
what is extensive caries
close to pulp (less than .5mm RDT) | exposed pulp
37
when to use a direct or indirect pulp cap
near expose: indirect | exposed cap: direct
38
timeline of defensive (reparative dentin
15 days : cells differentiate 30 days" microscopic repatative dentin 100 days: radiographic reparative dentin
39
reaction of CaOH liner
acid base reaction where Ca+ ions act to crosslink polyphenol groups
40
roll of CaOH liners
Insulator, Stimulates reparative dentin
41
how CaOH works
``` release OH (High pH) when ionized in low concetration, stimulates odontoblast formation ```
42
when is sedative restoration done
with questionable pulp status or emergency treatment with limited time
43
what is used in seadtive restorations
Intermeidate restorative materials and bases and tempors | USes reinforced ZOE
44
how reinforced ZOE works
oils of clove acts as obtudent (dull pain | expands when set to seal
45
when can ZOE not be used
under composite because it inhibits polymerization

amalgam (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions