Tehran University of Medical Sciences
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Mohammad Hossein Nekoofar

The sealing ability of resilon and gutta-parcha following different smear layer removal methods: an ex vivo study

Authors: Shokouhinejad, N. - Sharifian, M. R. - Aligholi, M. - Assadian, H. - Tabor, R. K. - Nekoofar, M. H. -
Keywords: Chelating Agents/chemistry , Citric Acid/chemistry , *Dental Bonding , Dental Leakage/classification , Dentin/ultrastructure , Doxycycline/chemistry , Edetic Acid/chemistry , Epoxy Resins/chemistry , Gutta-Percha/*chemistry , Humans , Materials Testing , Polysorbates/chemistry , Root Canal Filling Materials/*chemistry , Root Canal Irrigants/chemistry , Root Canal Obturation , Saliva/chemistry , *Smear Layer , Time Factors ,
Oral Surg Oral Med Oral Pathol Oral Radiol Endod, Vol.110, No.1, 2010,Page:e45-9
OBJECTIVE: The objective of this study was to compare the ex-vivo sealing ability of Resilon/new Epiphany (SE) sealer to that of gutta-percha/AH-Plus following smear layer removal with EDTA or MTAD. STUDY DESIGN: One hundred extracted single-rooted human teeth were divided into 4 experimental groups and 2 positive and negative control groups. EDTA was used in groups 1 and 2. In groups 3 and 4 MTAD was used. The root canals were then obturated with gutta-percha/AH-Plus in groups 1 and 3 and Resilon/Epiphany (SE) in groups 2 and 4. After sterilization, the samples were coronally exposed to human saliva and monitored every 24 hours for 60 days. RESULTS: In groups 1, 2, 3, and 4, 45%, 65%, 90%, and 65% of specimens leaked within 60 days, respectively. There were statistically significant differences between group 1 and 3 (P < .05). CONCLUSIONS: Resilon/Epiphany (SE) system is as effective as gutta-percha/AH-Plus in preventing saliva leakage. MTAD did not adversely affect the sealing ability of Resilon/Epiphany (SE).