Review
doi: 10.1067/moe.2002.128962.
Clinical implications of the smear layer in endodontics: a review
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- PMID: 12464887
- DOI: 10.1067/moe.2002.128962
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Review
Clinical implications of the smear layer in endodontics: a review
Oral Surg Oral Med Oral Pathol Oral Radiol Endod.
2002 Dec.
Abstract
It has been recognized for many years that root canal instrumentation produces a smear layer that covers the surfaces of prepared canal walls. This layer contains inorganic and organic substances such as fragments of odontoblastic processes and necrotic debris. There is a lack of agreement regarding the effect of the smear layer on the quality of instrumentation and obturation, but the smear layer itself may be infected and may protect the bacteria within the dentinal tubules. Various methods have been used to remove the smear layer. Conflicting results have been obtained from numerous in vitro studies regarding the significance of the presence or the removal of the smear layer.
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