post and core 2x

Question 1

non restorable criteria

Answer 1

no ferrule
post length greater than crown
80 too small, 120 too big
root perf, vertical fracture, vertical perio defect

Question 2

guarded criteria

Answer 2

ferrule less than 1 mm
post length = crown 
less than 90 file
high lateral displacement forces (bruxism, long span FPD, distal extension RPD)
apical seal less than 4 mm

Question 3

good criteria

Answer 3

ferrule more than 2 mm
3/4 of root length and > crown length
greater than or equal to 100 mm file
avg/below avg lateral displacement (opposing teeth present, more anterior teeth)

Question 4

when do you charge for a post space clean out

Answer 4

when the root canal was NOT done at OSU

Question 5

is there a RUC charge in addition to P&C

Answer 5

no, the core is the RUC

Question 6

what are the two appts needed for PC

Answer 6

undergrad ends for percha cleanout

CC clinic for measurement and placement of post and build up

Question 7

are posts on molars common

Answer 7

no bc they undercut shape of pulp chamber is retentive

Question 8

when can you perforate roots

Answer 8

cleaning out gutta percha

Question 9

which drill is more dangerous GG or parapost

Answer 9

parapost is more aggro

Question 10

what are preformed posts made out of

Answer 10

fiber or titanium

Question 11

do you use the same drill for cast vs preformed

Answer 11

yeys

Question 12

when is cast best

Answer 12

extremely tapered, funnel shaped canals

Question 13

agency insurance only covers:

Answer 13

some only cover cast

Question 14

ACC crown planned, what post?

Answer 14

fiber won’t produce shadow

Question 15

what is less prone to dislodgement/root fracture, fiber or metal

Answer 15

fiber bc similar to dentin

Question 16

which is easier to cement metal or fiber

Answer 16

metal (luting cement)

Question 17

are posts retrievable

Answer 17

hypothetically yes bc luting cement used but not really

Question 18

what will endo tell you

Answer 18

color (SIZE of post)

length (to which they removed gutta percha)

Question 19

what drill will you use when preparing post space

Answer 19

the first drill that does not go to the full length of the cleaned out part of the canal. start with smallest and go until one binds

Question 20

where should you cut the post down to

Answer 20

1 mm below prepared tooth

Question 21

what happens if you leave the post too long

Answer 21

It will cause sparks when you try to do crown prep

Question 22

what is default choice for cementing metal core

Answer 22

relyX luting

Question 23

cementing metal steps

Answer 23

squirt cement into hole, lentulo FORWARD ALWAYS
helper coats post
pick up with cotton pliers and pump It into canal

Question 24

what is a downfall of lentulos

Answer 24

can screw into gutta percha leading to separation

Question 25

why did you get two posts

Answer 25

in case you drop one while cementing

Question 26

how do you cement fiber posts

Answer 26

adhesive resin cement

relyX unices or paracore

Question 27

do you need to etch paracore

Answer 27

no

Question 28

how to use paracore

Answer 28

no etch
mix A and B, place small amt in canal
thin with air (thick layer won’t let post sit all the way)
light cure
squire cement into canal and seat just like metal
light cuire

Question 29

what other thing can paracore do that I don’t understand

Answer 29

cement and place build up in one step using plastic core formers

Question 30

do you need a bonding agent with relyX unicem

Answer 30

nope, no etch either

Question 31

what can you rinse with when using relyX unicme

Answer 31

sodium hypochlorite

Question 32

what material is most commonly used for cores

Answer 32

composite but GI also used

Question 33

temporary crown needed?

Answer 33

maybe, some may not care. risk of swallowing. use ball ended clasp in trim to make one.