Intro to Endodontics Flashcards
periradicular
surrounding the root
average number of roots and canals
- maxillary incisors and canines
1 root 1 canal
average number of roots and canals
- maxillary 1st premolars
2 roots 2 canals
average number of roots and canals
- maxillary 2nd premolars
1 root, 1 canal
average number of roots and canals
- maxillary 1st molar
3 roots, 4 canals
average number of roots and canals
- maxillary 2nd molar
3 roots, 3 canals
average number of roots and canals
- mandibular incisors, canines and premolars
1 root, 1 canal
average number of roots and canals
- mandibular first molar
2 roots, 3 canals
average number of roots and canals
- mandibular 2nd molar
2 roots , 3 canals
name 3 potential precursors to endodontic disease
trauma , gross caries, periapical pathology, pulpal pathology, cracks/fractures, root resorption
structure of reactionary dentine
tubular and irregular
structure of reparative dentine
atubular, dead tracts
what does the vertucci classification concern
root canal configurations and morphology
3 objectives of endodontic instrumentation
- create continuously tapering funnel shape
- keep apical foramen in OG position
- keep apical opening as small as possible
how is estimated working length calculated
measured on radiograph
how is corrected working length calculated
using electronic apex locator
master apical file
largest diameter file used
watch winding movement
back and forth 30-60 degrees movement with light apical pressure
balanced force movement
back and forth unequal movement with continuous apical pressure
H files function. , pros and cons
cuts on withdrawal
efficient but iatrogenic damage risk
good for removing gutta percha
K files cutting edge location
perpendicular to long axis
what needle should be used for endo irrigation
27 gauge endo needle
where should obturation/ shaping end
1-2mm short of the apex
