Endodontics Flashcards
How to differentiate acute apical abscess from lateral perio abscess
Vitality testing or probing
Other term for chronic focal sclerosing osteomyeletis
Condensing osteitis
An inflam of periosteum adjacent to the area of an infected tooth with periapical lesion
garve’s osteitis
An exophytic overgrowth of pulpal tissue with a present epithelial surface
Pulp polyp or chronic hyperplastic pulpitis
Type of root fracture with worst prognosis
Coronal root fracture
Type of fracture with best prognosis
Apical root fracture
Indication for pulpotomy
Vital tooth with provoked pain
1.8 mm dentin thickness bet pulp and carious lesion
Root length not more than 2/3 of total length
Partial pulpotomy aka
Cvek pulpotomy
C shaped canal tooth
Md 2nd molar
Or
Mx 2nd pm
Pinpoint mechanical exposure measurement
0.25 - 0.50 mm
Common ant with bifurcation
Md canines
Most common ant tooth assoc with 2 orifice
Md lateral incisors
Canal orifice that is most difficult to locate
MB2 of mx 1st molars
Post tooth with highest endodontic failure rate
Mx 1st molars
MB2 of mx 1st molar is usually loc
Bet Mb1 and palatal
Most apical end of root
Anatomical apex or radiographic apex
0.5 mm from apical anatomical apex
Apical foramen
0.5 from apical foramen in region of DCJ
Apical constriction
Files movt
Push and pull
Clockwise and counterclockwise
reamers movt
Half turn twist (clockwise)
Pull
For shaving dentin and removing old fillings
Reamers
Cuts only during pulling
Hedstrom
Best chelating agent
Ethylene diamine tetraacetic acid (EDTA)
CaOh is placed for how many days
10 days
Ideally the apical point where canal prep is to end, is loc in
1 mm
2 mm acceptable
Anatomical apex
GP made from
Zinc oxde
How many nega culture test before u proceed to OBT
2
Materials used to remove gutta percha during retreatment (3)
Eucalyptus oil
Xylene (xylol)
Chloroform
Materials used to remove silver cones during retreatment
Spoon excavator
Mosquito hemostat- removal of broken files
After rct when should it be recalled
6 mos
To know if successful - 2 yrs
Chemically induced apical closure
Apexification
Indication for apexification
Non vital young perm teeth with open apex
Physiologic development of apex
Indication???
Apexogenesis
For vital young perm teeth with open apex
Endodontic bleaching (2)
Hydrogen peroxide
Sodium perborate
Apicoectomy aka
Root end surgery
Retrograde filling (2)
Mta
Zinc free amalgam
Drilling a hole in a bone
Trephination
Or surgical window
Autoclave composition
250 F (121C) for 20 to 30 mins 15 psi
Dry heat
320 F (160 C) for 1 hr
Chairside sterilization (2)
Glass bead
Salt sterilizer
Glass bead
Uses 1mm metal cup bead 450 F (232 C) for 10 sec
Best for heat sensitive materials
Quaternary ammonium componds - best
Alcohol
Apicoectomy bevel???
45 degrees bevel
