Effect of Different Concentrations of Sodium Hypochlorite on the Compressive Strength of Endodontically Treated Roots
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Standard
Effect of Different Concentrations of Sodium Hypochlorite on the Compressive Strength of Endodontically Treated Roots. / Li, Alexiea Lulue Benjamin; Markvart, Merete; Abbott, Paul V.
I: Journal of Endodontics, Bind 48, Nr. 3, 2022, s. 370-374.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Effect of Different Concentrations of Sodium Hypochlorite on the Compressive Strength of Endodontically Treated Roots
AU - Li, Alexiea Lulue Benjamin
AU - Markvart, Merete
AU - Abbott, Paul V.
N1 - Copyright © 2021. Published by Elsevier Inc.
PY - 2022
Y1 - 2022
N2 - INTRODUCTION: The aim was to compare the compressive strength of dentin after irrigation with different concentrations of sodium hypochlorite (NaOCl).METHODS: Two hundred and fifty-nine extracted human tooth roots with no root caries or previous endodontic treatment were collected. They were sorted by size and length, and assigned to 7 groups (n=37): negative control (no instrumentation, no irrigant), positive control (saline irrigant), 1%, 2.5%, 4%, 5.25%, and 10% NaOCl. A total of 13 mL NaOCl or saline (in 1mL increments) was used per canal while being instrumented to #35 files (approximately 13 min). EDTAC (15%) was then used to remove smear layer (2 min), followed by NaOCl as a final rinse. The roots were sectioned into 2mm thick discs and subjected to compression testing.RESULTS: There was a significant difference between the negative control group and all instrumented groups (P < .05). The positive control group was significantly different to the 5.25% group (P < .05) and had a low P-value when compared to the 2.5% group and the other higher concentrations (P ≅ .1). When the NaOCl groups were compared to each other, there was a significant difference between 1% NaOCl and all higher concentrations (P < .05), but no significant difference when 2.5% NaOCl was compared to higher concentrations.CONCLUSION: A concentration of 1% NaOCl had the least effect on the compressive strength of dentin and this was significantly different to all higher concentrations tested. Therefore, the use of concentrations of NaOCl above 1% should be reconsidered.
AB - INTRODUCTION: The aim was to compare the compressive strength of dentin after irrigation with different concentrations of sodium hypochlorite (NaOCl).METHODS: Two hundred and fifty-nine extracted human tooth roots with no root caries or previous endodontic treatment were collected. They were sorted by size and length, and assigned to 7 groups (n=37): negative control (no instrumentation, no irrigant), positive control (saline irrigant), 1%, 2.5%, 4%, 5.25%, and 10% NaOCl. A total of 13 mL NaOCl or saline (in 1mL increments) was used per canal while being instrumented to #35 files (approximately 13 min). EDTAC (15%) was then used to remove smear layer (2 min), followed by NaOCl as a final rinse. The roots were sectioned into 2mm thick discs and subjected to compression testing.RESULTS: There was a significant difference between the negative control group and all instrumented groups (P < .05). The positive control group was significantly different to the 5.25% group (P < .05) and had a low P-value when compared to the 2.5% group and the other higher concentrations (P ≅ .1). When the NaOCl groups were compared to each other, there was a significant difference between 1% NaOCl and all higher concentrations (P < .05), but no significant difference when 2.5% NaOCl was compared to higher concentrations.CONCLUSION: A concentration of 1% NaOCl had the least effect on the compressive strength of dentin and this was significantly different to all higher concentrations tested. Therefore, the use of concentrations of NaOCl above 1% should be reconsidered.
U2 - 10.1016/j.joen.2021.12.006
DO - 10.1016/j.joen.2021.12.006
M3 - Journal article
C2 - 34952101
VL - 48
SP - 370
EP - 374
JO - Journal of Endodontics
JF - Journal of Endodontics
SN - 0099-2399
IS - 3
ER -
ID: 288649616