In vitro comparison of dentinal superficial micro-hardness change between two endodontic irrigation sequences

Authors

  • Aitziber Irigoyen Centro de Salud Familiar Cordillera
  • Sofía Santis Atención Privada Odontológica
  • Iván Soto Atención Privada Odontológica
  • Carlos Marchant Universidad de Valparaíso

DOI:

https://doi.org/10.22370/asd.2020.1.1.2107

Keywords:

Endodontics, irrigators, coronal sealing, adhesive systems, hybrid layer

Abstract

Objectives: to compare changes in surface microhardness of dentinal root (MSD) with two irrigation sequences (SI) using a Vickers microhardness test (VHN). Methods: 20 samples were prepared by longitudinal cutting of 10 unirradiculated human tooth. Two IS were prepared, a traditional one (5% NaOCl, saline 0,9%, 17% EDTA and saline 0,9%) and a modified one (traditional plus a final irrigation of 5% NaOCl), each irrigant isolated in a glass plate. In two groups of 10 samples (traditional IS and modified IS) 5 identations were performed by a Vickers microdurometer prior and after the IS immersion of the samples. The average of Vickers microhardness (VMT) of the samples was obtained and compared statistically. 0.05 P value. Results: A statistical difference of superficial microhardness was found among pre-irrigation (control) and post-irrigation in both protocols. Nonetheless, there was not a statistical difference among both protocols. Use of EDTA followed by NaOCl did not show a significant decrease of dentinal superficial microhardness. Conclusion: Use of NaOCl after EDTA did not show a significant decrease of dentinal superficial microhardness. Objectives: to compare changes in surface microhardness of dentinal root (MSD) with two irrigation sequences (SI) using a Vickers microhardness test (VHN).Methods: 20 samples were prepared by longitudinal cutting of 10 unirradiculated human tooth. Two IS were prepared, a traditional one (5% NaOCl, saline 0,9%, 17% EDTA and saline 0,9%) and a modified one (traditional plus a final irrigation of 5% NaOCl), each irrigant isolated in a glass plate. In two groups of 10 samples (traditional IS and modified IS) 5 identations were performed by a Vickers microdurometer prior and after the IS immersion of the samples. The average of Vickers microhardness (VMT) of the samples was obtained and compared statistically. 0.05 P value.Results: A statistical difference of superficial microhardness was found among pre-irrigation (control) and post-irrigation in both protocols. Nonetheless, there was not a statistical difference among both protocols. Use of EDTA followed by NaOCl did not show a significant decrease of dentinal superficial microhardness.Conclusion: Use of NaOCl after EDTA did not show a significant decrease of dentinal superficial microhardness.

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Published

2020-04-29

How to Cite

Irigoyen, A., Santis, S., Soto, I., & Marchant, C. (2020). In vitro comparison of dentinal superficial micro-hardness change between two endodontic irrigation sequences. Applied Sciences in Dentistry, 1(1). https://doi.org/10.22370/asd.2020.1.1.2107

Issue

Vol. 1 No. 1 (2020): Enero-Abril

Section

Research

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