endodontics 1 Flashcards
what may be a potential precursor to endodontic disease
trauma caries tooth surface loss apical pathology root resorption fractures/ cracks
what does the vertucci classification describe
root canal morphology/ configurations
estimated working length
obtained using a radiograph then minus 1mm
then insert file to this length and take another radiograph to determine corrected WL
corrected working length
determined after estimated WL and subsequent radiograph
may also use electronic apex locator
what minimum ISO size must files be to be seen on radiographs
15
what are the design objectives of ‘creating a root canal’
- create a continuously tapering funnel shape
- keep apical foreamen in the original position
- aim to keep canal the same shape as before
watch winding technique
back and forth 30- 60 degree movement
light apical pressure
balanced force technique
unequal back and forth rotations
continuous apical pressure
can you leave some caries and then proceed with endodontic treatment
no - all caries must be removed to prevent re infection
design objectives of access cavities
- straight line access
- de roof pulp chamber
- smooth walls with no overhangs
- design shape with regards to anatomy/ pulp horns
objectives of irrigation
disinfect
dissolve organic debris
flush out debris
remove smear layer
why do we do coronal flaring
avoids hydrostatic pressure
early removal of very contaminated contents
improves straight line access
modified double flare technique - 3 steps
1 - enlarge/ flare coronal part of canal (using gates glidden bur)
2 - negotiate access to apical portion
3 - flare apical portion via step back technique
what is the minimum ISO size we should prepare the apical portion of the canal to
25
cold lateral compaction
method of obturation using gutta percha and sealer
use of multiple gutta percha points coated in sealer to create complete obturation
