HOW TO DO ENDO Flashcards

1
Q

steps to endo?

A
  1. diagnose tooth
  2. pre-op radiograph
  3. locate and access canals
  4. working length and mechanochemical preparation
  5. temporise
  6. obturate
  7. radiograph to ensure length is met
  8. restore
  9. post-op radiograph
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2
Q

what are gates glidden drills used for?

A

for accessing the root canal

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3
Q

once you’ve accessed the canal, what are the steps?

A
  1. K File 10/15 until resistance - watchwind
  2. coronal flare with SX - brush motion
  3. establish working length with K file
  4. coronal shaping - S1 and S2
  5. work up to F1, F2 and F3 (finishing files) until WL is reaches
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4
Q

what must you do between filing?

A

irrigating with sodium hypochlorite

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5
Q

how do you temporise?

A
  1. dress with non-setting calcium hydroxide
  2. place cotton wool pledget to prevent restorative material getting stuck in canal
  3. use chemfil rock as temp
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6
Q

why is non-setting calcium hydroxide good for temp?

A

high pH
antibacterial
stimulate healing
radio-opaque

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7
Q

what instruments are used in obturation?

A

paper points
GP
accessory GP
finger spreads
tubiseal

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8
Q

how is the master GP picked?

A

depends on the finishing file

F1 - primary
F2 - secondary
F3 - tertiary

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9
Q

how should the master GP feel?

A

slight tug back from the canal

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10
Q

how do you obturate and restore?

A
  • dry canal with paper points
  • place in master GP w/ cement
  • place finger spreaders
  • place accessory points until compact
  • use heater plugger to remove excess GP
  • line cavity with RMGIC
  • restore
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11
Q

what are the protaper files? what are the colours and which areas do they file?

A

the shaping files

SX - gold
- widen coronal third

S1 - purple
- widen coronal and mid third

S2 - white
- widen mid third

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12
Q

what are the finishing file colours?

A

F1 - yellow
F2 - red
F3 - blue

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