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  • Title: [The effect of sampling repetition on gingival crevicular fluid and aspartate aminotransferase activity].
    Author: Xu L, Cao C, Sha Y.
    Journal: Zhonghua Kou Qiang Yi Xue Za Zhi; 1996 Nov; 31(6):341-3. PubMed ID: 9592287.
    Abstract:
    The purpose of the present investigation was to evaluate the influence on sampling repetition of aspartate aminotransferase (AST) level with 10-minute intervals. Tests based on the composition of gingival crevicular fluid (GCF) for detection of active periodontitis and GCF require the repetition of sampling. Two 30-second samples of GCF were harvested with 10-minute intervals from 123 sites in 10 healthy subjects and 20 periodontitis patients. AST activity of the first samples in periodontitis subjects were approximately 7.8% greater than that of the second samples. The difference were not significant (P > 0.05). But in healthy subjects the difference were significant (P < 0.05). AST activity correlation positively with bleeding index (BI) and probing pocket depth (PD).
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