Restoration of Endodontically Tx Tooth Flashcards
(16 cards)
Clinical assessment of endo tx tooth
Ferrule
Sinus/abscess
TTP
Swelling
Palpation
Mobility
Pockets
Radiographic assessment of endo tx tooth
Quality of RCT- length/voids/coronal
Missed canals
PAP/caries/RR
Bone levels
Fractured instruments
Post risks
Perforation
Mechanical failure
Post prep renders space unrestorable
Root/post/core/crown fracture
Secondary caries/reRCT
Function of a post/core
Provide intra-radicular support for crown
Post - retains core
Core - retains crown
What teeth are posts indicated for?
Incisors/premolars
- Avoid in thin tapering mandibular incisors
Premolars
- Place in widest root canal
Why do crown margins need to be placed on tooth tissue and not composite?
Inc risk of root fracture
What is a Nayyar core
2-4mm of AM removed RCs and packed into RC
What are the ideal post characteristics?
Parallel - prevents wedging
Non threaded - less strain on root
Cement retained - acts as buffer masticatory forces + tooth
What are the ideal post dimensions + GP to be left in canal
1:1 crown: root ratio
1.5mm ferrule
At least 1/2 of post in canal
Post width no more than 3rd of root width at narrowest point
4-5mm GP apically
Classification of posts
Manufacture - direct/indirect
Material - metal/ceramic/fibre
Shape - parallel/tapered
Texture - smooth/serrated
Post perforation tx
Peri-radicular surgery
XLa
Post removal options
Masseran kit
Moskito forceps
US
Eggler forceps
Sliding hammer
Post removal consent
Unable to remove
Post space rendered unrestorable - too wide
Post,root fracture
Indirect prep steps
GG size 3/4 to remove GP
Use parapost
Irrigate
Imp post - make notches + trim
PVS + putty imps + opposing
Temp post + temporise
Lab card for indirect post
Please pour up U+L imps and articulate to regi provided
Please construct cast post + core (6 degree taper) MCC for tooth _
Include parapost cololour
Please leave 2mm space
Provisional options for endo tx tooth (4)
Temp bond prov post crown
Immediate denture
Dressing
Essex retainer
