Evaluation of apical microleakage of teeth sealed with two different root canal sealers using two instrumentation techniques

K. Gholam, Mohammed; M. Zeidan, Baidaa; S. Oglah, Firas

	Evaluation of apical microleakage of teeth sealed with two different root canal sealers using two instrumentation techniques
Journal of baghdad college of dentistry
Article 1, Volume 23, Issue 1, 2011, Pages 8-11
Authors
Mohammed K. Gholam; Baidaa M. Zeidan; Firas S. Oglah
Abstract
ABSTRACTBackground: The purpose of this in vitro study was to compare, using a dye penetration test, the sealing ability of twocommonly used root canal sealers, Endofil sealer (Produits Dentaires SA, Switzerland) and ZOB sealer (Meta Biodent,Korea) after preparation of the root canals with rotary protaper (crown-down) technique and hand instrumentation(step-back) technique.Materials and methods: 40 single rooted freshly extracted human teeth were used in this study. The teeth were sectionedat the cementoenamel junction and instrumented by either protaper technique or step-back technique. After that thesamples were divided in to 4 groups with 10 samples each. Then the samples obturated using either ZOB sealer or Endofillsealer. All samples were stored in methylene blue with concentration of 1% for 7 days. Later on the teeth were removedfrom the dye and sectioned longitudinally with diamond disc and examined under stereomicroscope to measure thelevel of microleakage.Results: The results revealed that protaper technique has higher values of microleakage than step-back technique anda significant difference was found in comparing protaper + Endofill with step-back + Endofill.Conclusion: Protaper technique exhibit higher microleakage values than step-back technique regardless of type ofsealer used.Key words: Apical microleakage, Root canal sealers, Protaper technique. (J Bagh Coll Dentistry 2011;23(1):8-11)

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