35: Endodontic filling materials

35

Endodontic filling materials

Figure 35.1 Relative leakage behavior of endodontic obturation techniques.

c35-fig-0001


Box 35.1 Factors in successful root canal therapy
1 Effective biomechanical instrumentation of the root canal to produce a debris-free surface
2 Disinfection and dissolution of organic matter from within the canal to eliminate bacterial pathogens
3 Hermetic sealing of the obturated canal


Box 35.2 Ideal characteristics of endodontic irrigants
Nontoxic
Dissolve/disrupt tissue and debris in the canal
Low surface tension for good penetration
Lubricating action on cutting instruments
Sterilizing/disinfecting action
Ability to remove smear layer


Box 35.3 Requirements of endodontic sealer cements
Biocompatibility
Radiopacity equivalent to 3 mm of aluminum
Resistance to dissolution
Nonstaining
Long working time
Bacteriostatic/bacteriocidal characteristics
Good adhesion to cementum
Capability of forming a seal at tooth apex
Sealing action along canals walls

Table 35.1 Components of traditional endodontic sealer cements

Sealer cement formulation Powder Liquid
Grossman’s sealer Zinc oxide
Staybellite resin
Bismuth subcarbonate
Barium sulfate
Sodium borate
Eugenol
Rickert’s sealer Zinc oxide
Silver
Rosin
Thymol iodide
Eugenol
Canada balsam

Table 35.2 Potential proble/>

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Jan 1, 2015 | Posted by in Dental Materials | Comments Off on 35: Endodontic filling materials
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