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Endodontics > Obturation > Flashcards

Obturation Flashcards

1
Q

___ and ___ is more important than obturation.

A

Cleaning and Shaping

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2
Q

What should you do if you have problems with obturation?

A

go back and work on cleaning and shaping

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3
Q

What is the main objective of obturation?

A

to create a seal from the coronal to the apical

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4
Q

T/F. Final restoration is the most important.

A

True.

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5
Q

When should you NOT obturate?

A
  1. continued purulence or exudate in the canals - inability to dry the canal system
  2. significant swelling
  3. unable to complete treatment the same day (complicated case, pain problems, time constraints)
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6
Q

List some ideal requirements of an obturation material.

A 
easily introduced
liquid or semisolid and becomes solid
seal laterally and apically
does not shrink
impervious to moisture
bacteriostatic/cidal
does not stain tooth
does not irritate periapical tissues
easily removed
sterile or sterilizable
radiopaque
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7
Q

Match the following obturation materials as either solid or semisolid.

  1. gutta percha
  2. silver points
  3. carrier-based systems
  4. pastes
A

1-3: solid

4: semisolid

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8
Q

What type of obturation material is difficult to control the length (easy to overfill), poor seal (inconsistent seal), may shrink, and may contain toxic materials?

A

pastes

Do NOT use paraformaldehyde containing materials

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9
Q

What type of material is no longer recommended for use because of problems with corrosion by-products?

A

silver points

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10
Q

T/F. If a patient has silver points they may need to be retreated even if there is no pathosis or a need for restoration.

A

False, Silver points do NOT need to be retreated unless pathosis or if needed for restoration (needs post space)

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11
Q

What type of obturation materials are plastic or metal carrier coated with gutta percha, reinforced gutta percha core carrier with gutta percha outer coating, and requires oven heating?

A

carrier based systems

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12
Q

What are some problems with carrier based systems?

A
  1. ability to be forced to length without adequate cleaning and shaping
  2. difficult to retreat
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13
Q

T/F. As it pertains to carrier based systems, easier is always better.

A

False, easier is NOT always better

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14
Q

Gutta percha is mostly ___-___ (approx 75%) and gutta percha (20%).

A

zinc-oxide

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15
Q

What are some Grossman’s ideal characteristics for sealers?

A 
tissue tolerance
no shrinkage with setting
slow setting time
adhesiveness (creates a bond)
radiopaque
no staining
soluble (in a specific solvent)
not soluble in oral fluids
antibacterial
creates a good seal
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16
Q

T/F. The seal is NOT the deal!

A

False, the seal is the deal!!!

17
Q

The ___ is what bonds to the canal walls, NOT the ___ ___.

A

sealer; gutta percha

18
Q

What are the four major types of sealers?

A
  1. ZOE (zinc oxide eugenol)
  2. plastics
  3. glass ionomer
  4. calcium hydroxide containing
19
Q

What is the gold standard, safest and easiest obturation technique?

A

cold lateral condensation

20
Q

What are the basic steps of obturation?

A
  1. master cone seat
  2. laterally condense
  3. accessory cone
  4. laterally condense
  5. accessory cone…and so on…until it is filled
21
Q

What instruments/materials needed for the master cone check?

A 
paper points
endodontic files
sealer
gutta percha spreaders
pluggers
master cone radiographs
hemostats
22
Q

What is needed for the master cone radiograph check?

A

master cone and 1 or 2 accessory cones WITH sealer

23
Q

What instruments/materials needed for obturation?

A 
sealer
gutta percha
spreaders
pluggers
glick
electronic heat instrument
alcohol pellets
24
Q

What is the name of the cordless electric heat source for PATIENT use? What is the heat source for NON_PATIENT use when practicing in the predoc endo clinic?

A

PATIENT use : Superendo Alpha2 (B&L BIOTECH)

NON-PATIENT use : Touch N Heat (Sybron Endo)

25
Q

What is the name of the heat source used in Grad Endo Clinic?

A

System B (SYBRON ENDO)

26
Q

What instruments/materials are needed for temporary or final restoration?

A 
final radiograph (double-pack)
temporary restoration material (Cavit or IRM) OR Permanent restoration
Glick
Mirror
Explorer
Floss

Endodontics (6 decks)

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