Endodontics - Pathway of the pulp

Question 1

Define fistula

Answer 1

Abnormal communication pathway between 2 internal organs or from one epithelium lined surface to another epithelium lined surface

Question 2

Define sinus tract

Answer 2

Chronic endodontic infection that will drain through intra oral communication to gingival surface

Pathway which is sometimes lined with epithelium extends from source of infection to the surface opening

Question 3

Pain to percussion indicates what?

Answer 3

inflammation in PDL

Question 4

The vitality of the pulp is determined by ?

Answer 4

1) intact & healthy vascular supply
NOT by pulpal nerve fibers status

Question 5

Which dye is used to detect a crack in tooth?

Answer 5

Methylene blue

Question 6

Transillumination

Answer 6

Teeth with fractures block transillumination light

Question 7

PDL injection - intraligamentry injection )

Answer 7

If patent cannot determine where pain is coming from.
local PDL injecting is given to 1 tooth at a time -

may anesthetize next tooth and more useful to determine the arch rather than then tooth