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Coronal Sealing Ability of a New Root Canal Filling MaterialFULL TEXT
• Emre Bodrumlu, DDS, PhD •
A b s t r a c t
Background and Objective: To date, many different materials have been proposed for root canal fillings, but gutta-percha (used with various types of sealers) has remained the material of choice for over a century. A new root canal obturation system, the Epiphany endodontic obturation system, has been developed to replace gutta-percha and traditional sealers for root canal obturation. The purpose of this study was to evaluate the coronal sealing ability of the new endodontic obturation system.
Materials and Methods: Seventy-two maxillary and mandibular single-rooted human teeth extracted for periodontal reasons were used. The root canals were instrumented using the step-back technique and were irrigated with 5.25% sodium hypochlorite. The smear layer was removed by washing in 10 mL of 17% ethylenediamine tetra-acetic acid (EDTA). The specimens were randomly divided into 3 groups (group 1 to be filled with gutta-percha and AH 26 sealer, group 2 with gutta-percha and AH plus sealer, and group 3 with Epiphany self-etch sealer and Resilon obturating material) and obturated by lateral condensation. Teeth were centrifuged at 30g for 5 minutes in 2% methylene blue dye solution to allow evaluation of any coronal leakage. The tooth roots were longitudinally grooved with a diamond disk and split with a chisel. Dye penetration was measured from the coronal to the apical part of the root canal using a stereomicroscope with ocular micrometer, and the mean leakage value for each group was calculated and recorded.
Results: The 6 positive control specimens had total dye penetration of the root canal system, whereas the 6 negative control teeth had no dye penetration into the roots. All of the experimental groups demonstrated some degree of coronal leakage. Coronal
Conclusion: All of the root canal filling materials tested in this evaluation yielded a satisfactory seal; however, the Epiphany root canal filling system exhibited the least coronal
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