The flow of two zinc oxide-eugenol-based endodontic sealers
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Published:2013
Issue:1
Volume:70
Page:21-25
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ISSN:0042-8450
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Container-title:Vojnosanitetski pregled
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language:en
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Short-container-title:VOJNOSANIT PREGL
Affiliation:
1. Faculty of Dental Medicine, Clinic of Restorative Dentistry and Endodontics, Belgrade
Abstract
Background/Aim. Endodontic sealers (ES) for obturation are usually prepared
with a slight variation of their components both on purpose or
unintentionally. Considering that fact, as well as a frequent use of
compaction techniques with the applied force to gutta-percha and ES of 1-3
kg, the aim of this study was to investigate the flow of two zinc-oxide
eugenol ES in regard to the applied force and a variation of sealer?s
components. Methods. The experimental group samples of both ES were prepared
according to the manufacturer?s instructions, applied between pair of glass
slabs and loaded by weights of 1 and 2 kg, respectively (American National
Standard, Specification No. 57). Some samples of one ES were prepared as
thick consistency with 10% more powder and some as thin mixture with 10% less
powder than the standard prescription. These semples had been exposed to the
load of 2 kg. The control group included samples of both ES prepared as
standard prescription but exposed to the weight of one glass slab only. The
spread ES appeared as a regular circle 10 min upon mixing and weighting.
Measuring of the circle diameter was done by an orthodontic ruler. The flow
of the used ES was considered the function of its spread diameter. Results.
Application of 1 vs 2 kg load for both regularly mixed sealers in the scope
of disk diameter (flow) was statistically insignificant (p > 0.05). This
means that the stated null hypothesis that there would be no significant
difference in flow rate among the regularly mixed sealers at the level of ? =
0.05 is accepted. The findings about difference in the disk diameter in
regard to mixing variation of Endomethasone indicate that the null hypothesis
that there would be no significant difference in flow rate between the
regular and thick mixed mass at the level of ? = 0.05 is accepted. In the
comparison of regular and thin mix a significant difference was noted and the
null hypotesis is rejected (p < 0.01). The control group results displayed
Roth 801 as less viscous than Endomethasone sealer (p < 0.01). Conclusion.
Application of 1 or 2 kg pressure on the samples of both exposed sealers does
not significantly affect the flow values as well as comparison of the regular
to thick consistency of Endomethasone while comparison of its regular to thin
mass shows a significant difference.
Publisher
National Library of Serbia
Subject
Pharmacology (medical),General Medicine
Cited by
1 articles.
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