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In vitro evaluation of apical microleakage using different root-end filling materials
Márcia Carneiro Valera1, Carlos Henrique Ribeiro Camargo, Alessandra Sverberi Carvalho
1Dental School of São José dos Campos, São Paulo State University, UNESP, Brazil. marcia@fosjc.unesp.br
Journal of Applied Oral Science : Revista FOB
|December 18, 2008
Summary
This study compared apical leakage in root-end fillings using Portland Cement, ProRoot MTA, and Sealapex with zinc oxide. All tested materials demonstrated comparable, minimal marginal leakage, indicating effective sealing capabilities.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Apical leakage is a critical factor in endodontic treatment failure.
- Retrograde root-filling materials aim to seal the apical preparation and prevent bacterial ingress.
Purpose of the Study:
- To evaluate and compare the apical leakage of retrograde cavities filled with Portland Cement, ProRoot MTA, and Sealapex with added zinc oxide.
Main Methods:
- Forty-two human teeth underwent root canal instrumentation and obturation.
- Retrograde cavities were prepared and filled with Portland Cement, ProRoot MTA, or Sealapex with zinc oxide.
- Marginal leakage was assessed using Rhodamine B dye after 30 days in simulated tissue fluid.
Main Results:
- Mean apical leakage values were 0.75 for Portland Cement, 0.35 for ProRoot MTA, and 0.35 for Sealapex with zinc oxide.
- No statistically significant difference in marginal leakage was found among the three tested groups (p>0.05).
Conclusions:
- Portland Cement, ProRoot MTA, and Sealapex with added zinc oxide exhibit similar and low levels of apical leakage.
- These materials are effective in sealing retrograde cavities, suggesting comparable clinical performance in preventing apical periodontitis progression.