Application of biologically-oriented dentin bonding principles to the use of endodontic irrigants

Franklin García-Godoy, Robert J. Loushine, Anut Itthagarun, R. Norman Weller, Peter E. Murray, Albert J. Feilzer, David H. Pashley, Franklin Chi Meng Tay

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Purpose: To compare the removal of smear layer and the structure of the hybrid layer formed after the use of EDTA or MTAD solutions when used as a final flush. Methods: Single-rooted extracted premolars (n=18) were collected and treated for root canal therapy using NaOCl irrigation followed by a final rinse of 17% EDTA, Biopure MTAD, or saline (negative control). The roots were obturated with gutta-percha and a hydrophilic HEMA-containing root canal sealer. The TEM specimens were impregnated with 50% silver nitrate to visualize sealing imperfections and nanoleakage. The structure of the coronal, middle and apical parts of root canal walls was examined using transmission electron microscopy. Results: After NaOCl irrigation, a final rinse with BioPure MTAD or 17% EDTA completely removed the 2 μm-thick smear layer on mechanically instrumented root canal walls. The BioPure MTAD hybrid layer was thicker than the 17% EDTA hybrid layer. Both the BioPure MTAD and EDTA caused a collapse of the dentin matrix structure which impeded sealer infiltration and the formation of high quality hybrid layer bonding. The hybrid layers created in smear layer-covered dentin exhibited less potential for nanoleakage than the MTAD or EDTA hybrid layers.

Original languageEnglish (US)
Pages (from-to)281-290
Number of pages10
JournalAmerican Journal of Dentistry
Volume18
Issue number4
StatePublished - Aug 1 2005

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Endodontics
Dentin
Edetic Acid
Smear Layer
Dental Pulp Cavity
Root Canal Therapy
Gutta-Percha
Silver Nitrate
Bicuspid
Transmission Electron Microscopy
MTAD (intracanal irrigant)

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

García-Godoy, F., Loushine, R. J., Itthagarun, A., Weller, R. N., Murray, P. E., Feilzer, A. J., ... Tay, F. C. M. (2005). Application of biologically-oriented dentin bonding principles to the use of endodontic irrigants. American Journal of Dentistry, 18(4), 281-290.

Application of biologically-oriented dentin bonding principles to the use of endodontic irrigants. / García-Godoy, Franklin; Loushine, Robert J.; Itthagarun, Anut; Weller, R. Norman; Murray, Peter E.; Feilzer, Albert J.; Pashley, David H.; Tay, Franklin Chi Meng.

In: American Journal of Dentistry, Vol. 18, No. 4, 01.08.2005, p. 281-290.

Research output: Contribution to journalArticle

García-Godoy, F, Loushine, RJ, Itthagarun, A, Weller, RN, Murray, PE, Feilzer, AJ, Pashley, DH & Tay, FCM 2005, 'Application of biologically-oriented dentin bonding principles to the use of endodontic irrigants', American Journal of Dentistry, vol. 18, no. 4, pp. 281-290.
García-Godoy F, Loushine RJ, Itthagarun A, Weller RN, Murray PE, Feilzer AJ et al. Application of biologically-oriented dentin bonding principles to the use of endodontic irrigants. American Journal of Dentistry. 2005 Aug 1;18(4):281-290.
García-Godoy, Franklin ; Loushine, Robert J. ; Itthagarun, Anut ; Weller, R. Norman ; Murray, Peter E. ; Feilzer, Albert J. ; Pashley, David H. ; Tay, Franklin Chi Meng. / Application of biologically-oriented dentin bonding principles to the use of endodontic irrigants. In: American Journal of Dentistry. 2005 ; Vol. 18, No. 4. pp. 281-290.
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