Endodontic Materials Flashcards
What concentration of sodium hypochlorite should be used for irrigation?
3%
What are the main properties of sodium hypochlorite?
- dissolves organic material
- bactericidal
What are the recommended uses of sodium hypochlorite?
- disinfection
- lubrication
What percentage of EDTA should be used for irrigation?
17%
What is the main property of EDTA?
removal of the smear layer
What are the recommended uses of EDTA?
- lubrication
- penultimate rinse
- 1 minute
- removes smear layer
- opens dentinal tubules
- root conditioning
- extraction of dentine growth factors
- for regenerative endodontic procedures
- extraction of dentine growth factors
What concentration of chlorhexidine digluconate is recommended?
0.2%
What is the recommended use of chlorhexidine digluconate?
- checking dam integrity
- disinfecting tooth surface
What is the recommended use of sterile saline?
washing out canals following a suspected hypochlorite accident
What must be assessed radiographically before using sodium hypochlorite to irrigate?
- assessment of apices
- be mindful of open apices
- look for perforations
Why should a broken tooth be built up before use of sodium hypochlorite?
- to allow for dam placement
- to create a reservoir for irrigants
What must the patient be provided with before commencing use of hypochlorite?
- protective eyewear
- disposable bib
- 2 if required to ensure clothes are covered
What should be used to seal dental dam?
- Opaldam
- Oraseal
Describe the safest syringe for use of sodium hypochlorite
- clearly labelled
- adhesive labels
- side vented needle
- luer-lok 27G needle
- 3ml syringe
How can a syringe best be used to deliver sodium hypochlorite?
- fill to 3/4 volume
- aids control
- place a silicon stopper
- 2mm short of working length
- do not allow needle to bind in root canal
- depress plunger with index finger
- instead of thumb
- reduces pressure
- pass syringe behind head
- never over patient’s face
