Obturation

Question 1

what are some procedural errors that can occur in endo

Answer 1

loss of length (lodging)
canal transportation
perforation
loss of coronal seal
vertical root fracture

Question 2

what are the 4 main things that influence success in root canal tx

Answer 2

absence of pretreatment PA lesion
root canal filling with no voids
obturation to within 2mm of apex
adequate coronal restoration

Question 3

what is obturation necessary for

Answer 3

to eliminate leakage
- reduces coronal leakage and bacterial contamination
- selas apex from PA fluids
- entombs remaining irritants in the canal

Question 4

what is a hermetic seal

Answer 4

Question 5

why is one visit preferred for vital pulp tissue

Answer 5

bacterial contamination is minimal
prevents possible contamination via leakage between visits
- elective RCT
- irreversible pulpitus

Question 6

what is condensing osteitis

Answer 6

sclerosis of bone in response to apical inflammation
non- vital tooth
amorphous radiopacity with widening of the PDL space or PA radiolucency

Question 7

what are the guidelines for when you can do endo in a single visit

Answer 7

*the presence of necrotic pulp and PA radiolucency on radiographs are not contraindications to a single visit

Question 8

when should endo be done in mutliple visits

Answer 8

presence of acute signs, symptoms and swelling
persistent exudate in root canal
anatomical difficulties
technical difficulties
pt or dentist is tired

Question 9

what should the length of obturation be

Answer 9

Question 10

what is the composition of GP

Answer 10

Question 11

what are advantages to GP

Answer 11

plastic- adapts well to compaction to canals
easy to manipulate
easy to remove
low toxicity
does not support bacterial growth
can be sterilised before use by soaking 1min in 5.25% NaOCL

Question 12

what is cold lateral compaction

Answer 12

Question 13

how do you do cold lateral compaction

Answer 13

Question 14

what are the disadvantages to lateral condensation

Answer 14

Question 15

what is single cone obturation with bio ceramic sealers

Answer 15

Question 16

what are bio ceramic sealers like

Answer 16

Question 17

what are advantages to single cone obturation with bio ceramic sealers

Answer 17

Question 18

what is the warm vertical compaction technique

Answer 18

Question 19

what is continuous wave condensation

Answer 19

Question 20

what can be used to seal the entrance to the root canals ?

Answer 20

resin modified GI (Vitrebond)
Smart dentine replacement (SDR)