8. Endo Treated Teeth I Flashcards
Normally we use (minkin/minim) pins
minim (gray)
(Smaller/larger) pins are more retentive
larger
How much heathy dentin do you want around the pin
1 mm
How much space should be left between minim and minikin pins
minim= 5 mm or more minikin= 3 mm or more
_ mm of pin is in the restoration
2
If a narrow single rooted tooth with little coronal structure is present what may need to be done to ensure adequate retention of the core
elective endo
What are the different instances we may decide to do elective endo
- Stressed tooth
- Pulp symptoms
- Little tooth remaining
- When Post op endo would compromised retention/resistance
- Substantial perio and tooth reduction for restorative space
What should be done when a pulpal blush occurs during preparation
- Observe
- Elective endo
- *Depends
- Symptoms and discoloration (gray) indicate the need for RCT
Reading on slide 11
ok
Why is it difficult to do endo through a crown
Accessing and finding canals is a challenge
What is the main concern with performing a RC through a crown
-You don’t know how much tooth structure you are removing. If you remove too much coronal tooth structure the restoration will more than likely fail
Ideal treatment for a tooth with a crown that needs RCT is what
- Remove the crown
- Evaluate the tooth for restorablility
- Endo if restorable
What is the main treatment consideration when performing RCT on a tooth that will need a crown
Conserve tooth structure!
- Avoid excessive widening of the canal
- More tooth structure more strength
Place a good intrim
- Maintain endo seal
- Prevent re-infection
Protect against fracture
- Replace the cavit with amalgam or resin ASAP if definitive treatment is to be delayed
- Place a provisional with light contacts
- Advise limited function on that tooth (weakened tooth –> non-restorable fracture)
Excessive widening of the canals makes the tooth more prone to what
root fracture
When do you restore endo-treated teeth
In general asap but it depends.
- A long standing lesion needs time to heal
- Questionable prognosis needs time to evaluate
Before restorative treatment the endo treated tooth must be evaluated for…
- Good apical seal
- No sensitivity to percussion
- No exudate
- No fistula
- No apical sensitivity
- No active inflammation
A BW X-ray (is/isn’t) adequate for endo screening before a crown
isn’t
Can you restore an endo treated tooth that is still symptomatic
No- Endo department will not obturate the canal and complete RCT if the tooth is still experiencing symotoms
What is the minimal thickness for cavit
4 mm
Cavit should be used for Class _ scenarios only
1
Cavit leakage can occur in as little as (how long?)
3 weeks
How will you be able to tell if there was leakage after removing the cavit
cotton should be clean and dry
Which has a better seal IRM or cavit
IRM
Which can be used for a class II prep (IRM/cavit)
IRM
