Journal
JOURNAL OF ENDODONTICS
Volume 36, Issue 8, Pages 1307-1310Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.joen.2010.04.018
Keywords
Apical periodontitis; biological marker; gingival crevicular fluid
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Funding
- American Association of Endodontists Foundation
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Introduction: The diagnosis and assessment of apical periodontitis by traditional periapical radiographs can be challenging and might yield false-negative results. The aim of this study was to determine whether interleukin-1 beta (IL-1 beta) and dentin sialoprotein (DSP) in gingival crevicular fluid (GCF) can be used as biological markers for apical periodontitis. Methods: Forty healthy patients with teeth diagnosed with apical periodontitis of pulpal origin were included in the study. GCF samples were obtained from the diseased tooth and from a healthy contralateral control tooth. Total protein concentration in each sample was determined by using the Bio-Rad protein assay. Enzyme-linked immunosorbent assay was used to analyze the concentration of IL-1 beta and DSP in the samples. Results: Protein content of the GCF was statistically significantly higher in the disease group compared with the control group. The levels of IL-1 beta and DSP were not statistically different between disease and control groups. Conclusions: Although this study was unable to demonstrate a significantly higher level of IL-1 beta or DSP in the GCF of teeth with apical periodontitis, the observed presence of a significantly higher level of total protein in the GCF of diseased teeth suggests the possible role of total protein level as a marker for periapical disease. (J Endod 201036:1307-1310)
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