Effect of endodontic chelating solutions on the bond strength of endodontic sealers
Braz. oral res. (Online)
; 29(1): 1-6, 2015. tab, ilus
Article
in En
| LILACS
| ID: lil-777206
Responsible library:
BR1.1
ABSTRACT
The purpose of this in vitro study was to evaluate the effect of various chelating solutions on the radicular push-out bond strength of calcium silicate-based and resin-based root canal sealers. Root canals of freshly-extracted single-rooted teeth (n = 80) were instrumented by using rotary instruments. The specimens were randomly divided into 4 groups according to the chelating solutions being tested (1) 17% ethylenediaminetetraacetic acid (EDTA); (2) 9% etidronic acid; (3) 1% peracetic acid (PAA); and (4) distilled water (control). In each group, the roots were further assigned into 2 subgroups according to the sealer used (1) an epoxy resin-based sealer (AH Plus) and (2) a calcium silicate-based sealer (iRoot SP). Four 1 mm-thick sections were obtained from the coronal aspect of each root (n = 40 slices/group). Push-out bond strength test was performed at a crosshead speed of 1 mm/min., and the bond strength data were analyzed statistically with two-way analysis of variance (ANOVA) with Bonferroni’s post hoc test (p < 0.05). Failure modes were assessed quantitatively under a stereomicroscope. Irrespective of the irrigation regimens, iRoot SP exhibited significantly higher push-out bond strength values than AH Plus (p < 0.05). For both the sealers, the use of chelating solutions increased the bond strength, but to levels that were not significantly greater than their respective controls (p > 0.05). iRoot SP showed higher resistance to dislocation than AH Plus. Final irrigation with 17% EDTA, 9% Etidronic acid, and 1% PAA did not improve the bond strength of AH Plus and iRoot SP to radicular dentin.
Key words
Full text:
1
Index:
LILACS
Main subject:
Root Canal Filling Materials
/
Root Canal Irrigants
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Chelating Agents
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Dental Bonding
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Dental Pulp Cavity
/
Dentin
Type of study:
Clinical_trials
/
Evaluation_studies
Limits:
Humans
Language:
En
Journal:
Braz. oral res. (Online)
Journal subject:
ODONTOLOGIA
Year:
2015
Type:
Article