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Y3-CSB endodontics > week 2 endo > Flashcards

week 2 endo Flashcards

1
Q

how do we use a protaper

A

always ensure the file is rotating before introducing it into the canal
shaping files in a burst motion

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2
Q

what type of machine is a protaper

A

rotation

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3
Q

what do we need to do prior using rotary instruments

A

create a glide path first before using machines

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4
Q

how many brush strokes shall we use in between the protaper

A

3 and then IRRIGATE

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5
Q

how do we instrument using a protaper

A

Access into pulp chamber- remove all the roof
Scout coronal part of canal with 10 hand file
Create glidepath in straight with size 15
Coronal flare with SX file( the file that doesn’t have white bands on it)
Determine working length with apex locator and radiograph
Take F1 into canal with single pass, light apical pressure until working length is reached
Irrigate inbetween
Take f2 into canal with single pass until working length is reached

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6
Q

what technique do we use for stage 1

A

watch winding

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7
Q

what is stage 1 called

A

scout canal and glide path

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8
Q

what files do we use for the glide path

A

10 +15 files

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9
Q

what is stage 2

A

coronal flare

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10
Q

what do we use for coronal flare

A

SX file with brushing motion

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11
Q

what is stage 3

A

establish working length

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12
Q

what technique do we use for stage 3

A

watch winding with the K10 file

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13
Q

what is stage 4

A

apical glide path

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14
Q

what do we use for apical glide path

A

K15

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15
Q

what is stage 5

A

coronal shaping

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16
Q

what do we use in stage 5

A

S1

S2

17
Q

what is the torque in stage 2

A

4Ncm

18
Q

what is the torque in stage 5 using S1

A

4

19
Q

WHAT is the torque in stage 5 using S2

A

1.5

20
Q

what is stage 6

A

apical finishing

21
Q

what do we use in stage 6

A

F1
F2
F3

22
Q

what is the torque in apical finishing F1

A

2 Ncm

23
Q

what is the torque in apical finishing in F2,F3

A

3NCM

24
Q

what is the point of endo irrigation

A

dissolution of organic tissue and plural remnants
dissolution of select inorganic components
killing of microorganisms and neutralisation of endotoxin
lubricate canals

25
Q

when do we irrigate

A

between every file change

26
Q

how do we irrigate

A

passing the tip of the irrigating needle to at least 3mm from our apical prep
Any further than 2mm from the needle tip remains unirrigated and classed as the dead zone “dead zone”

27
Q

what is the dead zone

A

Any further than 2mm from the needle tip remains unirrigated

28
Q

what needle is used for irrigation

A

27G placed 3mm from apex in a canal prepared to ISO 30

29
Q

what flow rate do we aim for in canals

A

1ml in 15 seconds

30
Q

what does chlorhexidine and hypochlorite do if mixed

A

white PPT formed and this is carcinogenic

31
Q

signs of hypochlorite incidents

A

udden pain irrespective of the presence of LA. Profuse bleeding from within the canal. Extensive Oedema

32
Q

management of hypochlorite incident

A
  • action must be swift and communications with the patient honest and sympathetic without panic – seek immediate guidance from your tutor, don’t wait in the queue!!
  • Irrigate the canal with saline
  • Give additional local anaesthetic if required for pain relief
  • Dress the canal with non-setting calcium hydroxide
  • Inform and reassure the patient (anticipate severe oedema and bruising)
  • Advise of analgesia – Paracetomol and Ibuprofen
  • Arrange a further appointment to review the patient

Y3-CSB endodontics (8 decks)

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