Restoration RFT I Flashcards
Aim of restoring root filled tooth?
Create a mechanical system which mimics unrestored tooth
Withstand impact loads
Resist wear
Distribute and dissipates stress
What questions consider before restoring RF tooth?
Why endo performed? How did procedure go? What is result of procedure? If tooth asymptomatic? How long leave before restore?
Why restore RF tooth?
Avoid bacterial leakage
Restore coronal structure
Restore aesthetic
Why get coronal leakage?
Breakdown intervisit temp
Delay pacing definitive restoration
Exposed dentine
How create good seal with GP?
Avoid excess GP across floor pulp chamber - remove excess
Seal pulp chamber w/ GIC
How is RF tooth different?
Compromised architecture
Changes in physical properties
Changes in loading
Challenges restoring RF tooth?
Severe coronal damage
Compromised mechanical integrity of tooth
Reduced capacity stress distribution
Possible change physical properties dentine
Why restore RF tooth?
As soon as possible - prevent bacterial recontamination and fracture of tooth
What want to see prior restoration RF tooth?
Evidence of resolution of infection - symptoms, clinical findings, radiographic findings
Biomechanics principles of restoring RF tooth?
Retain structural integrity of radicular mass
Retain as much tooth as possible
When is cuspal protection needed?
If more 2 surface lost or under large occlusal force
Ideal qualities coronal restorative material?
Adequate compressive, tensile and flexural straight
matched coefficient thermal expasnion
effective and predictable coronal bonding
radiopaque
ease of use
Ideal material for direct replacement coronal structure?
Composite
RMGIC
