Obturation Flashcards
___ and ___ is more important than obturation.
Cleaning and Shaping
What should you do if you have problems with obturation?
go back and work on cleaning and shaping
What is the main objective of obturation?
to create a seal from the coronal to the apical
T/F. Final restoration is the most important.
True.
When should you NOT obturate?
- continued purulence or exudate in the canals - inability to dry the canal system
- significant swelling
- unable to complete treatment the same day (complicated case, pain problems, time constraints)
List some ideal requirements of an obturation material.
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
Match the following obturation materials as either solid or semisolid.
- gutta percha
- silver points
- carrier-based systems
- pastes
1-3: solid
4: semisolid
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?
pastes
Do NOT use paraformaldehyde containing materials
What type of material is no longer recommended for use because of problems with corrosion by-products?
silver points
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.
False, Silver points do NOT need to be retreated unless pathosis or if needed for restoration (needs post space)
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?
carrier based systems
What are some problems with carrier based systems?
- ability to be forced to length without adequate cleaning and shaping
- difficult to retreat
T/F. As it pertains to carrier based systems, easier is always better.
False, easier is NOT always better
Gutta percha is mostly ___-___ (approx 75%) and gutta percha (20%).
zinc-oxide
What are some Grossman’s ideal characteristics for sealers?
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
T/F. The seal is NOT the deal!
False, the seal is the deal!!!
The ___ is what bonds to the canal walls, NOT the ___ ___.
sealer; gutta percha
What are the four major types of sealers?
- ZOE (zinc oxide eugenol)
- plastics
- glass ionomer
- calcium hydroxide containing
What is the gold standard, safest and easiest obturation technique?
cold lateral condensation
What are the basic steps of obturation?
- master cone seat
- laterally condense
- accessory cone
- laterally condense
- accessory cone…and so on…until it is filled
What instruments/materials needed for the master cone check?
paper points endodontic files sealer gutta percha spreaders pluggers master cone radiographs hemostats
What is needed for the master cone radiograph check?
master cone and 1 or 2 accessory cones WITH sealer
What instruments/materials needed for obturation?
sealer gutta percha spreaders pluggers glick electronic heat instrument alcohol pellets
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?
PATIENT use : Superendo Alpha2 (B&L BIOTECH)
NON-PATIENT use : Touch N Heat (Sybron Endo)
