The reliability of the salivary occult blood to test gingival inflammation

Abstract

Abstract: PURPOSE: To evaluate the reliability of salivary occult blood test(SOBT) for gingival inflammation. METHODS: Forty-five pre- and post-stimulation saliva samples were tested for occult blood, with bleeding on probing (BOP) as an indicator of gingival inflammation. Subjects with BOP%<15% were defined as control group. The examinations were repeated 3 months after periodontal initial therapy. The relationship between the results of SOBT and gingival inflammation was analyzed. SAS6.12 software package was used for statistical analysis. RESULTS: The SOBT of pre-stimulation was higher in gingivitis group than in control group (P<0.05). BOP% and SOBT of post-therapy was significantly decreased (P<0.01), with 90% of pre- and 63% of post-stimulation SOBT turning negative. The sensitivity and specificity of pre- stimulation SOBT in screening gingivitis were 32.35% and 100%. The sensitivity and specificity of the post-stimulation SOBT were 88.24% and 81.82%. CONCLUSIONS: SOBT is correlated with gingival inflammation, which may be used as an objective parameter to evaluate gingival inflammation and the efficacy of periodontal therapy at individual level. It may offer a simple screening method for gingival inflammation applied in periodontal epidemiologic studies in large population.

Key words: Occult blood test, Gingival inflammation, Salivary, Epidemiology

CLC Number:

R781.4

HUANG Jia-ni, YIN Yuan-zheng, Ding Jin. The reliability of the salivary occult blood to test gingival inflammation[J]. Shanghai Journal of Stomatology, 2014, 23(1): 87-90.

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