The purpose of this study was undertaken to evaluate the in vitro sealing ability of apicoectomy only, amalgam with cavity varnish, composite with dentin bonding agent, and glass ionomer when used as retrofilling materials.
Eight single rooted extracted maxillary and mandibular human teeth were instrumented, filled with gutta-percha cone using a lateral condensation technique, and subjected to a apicoectomy procedure.
Eighty teeth were divided into four groups.
Only except apicoectomy group other three groups were filled retrofilling materials.
All teeth were coated with cavity varnish and nail varnish remaing apical I^(㎜), immersed 2% methylene blue dye, washed, sectioned, and determined apical leakage values.
The following results wereobstained.
1. All teeth used in this study were showed dye penetration.
2. The composite group demonstrated the least amount of apical leakage.
3. The apicoectomy group demonstrated the greatest amount of apical leakage.
4. Statistics demonstrated that there were significant di:ferences among the apicoec to my group and other groups (P < 0.001) and between the composite with dentin bonding agent group and amalgam with varnish group (P < 0.05), however there was nodifference among the other groups (P > 0.1)
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