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  • Title: Relationship between levels of aspartate aminotransferase in gingival crevicular fluid and conventional measures of periodontal status assessed using PocketWatch: a cross-sectional study.
    Author: Shimada K, Mizuno T, Uchida T, Kato T, Ito K, Murai S.
    Journal: J Oral Sci; 1999 Mar; 41(1):35-40. PubMed ID: 10230159.
    Abstract:
    The aim of this cross-sectional study was to determine, using PocketWatch, the relationship between the level of aspartate aminotransferase (AST) in gingival crevicular fluid (GCF) and conventional measures of periodontal status, such as probing depth, attachment level, bleeding on probing and gingival index, in patients with untreated chronic periodontitis. A total of 15 patients with chronic periodontitis were enrolled. Their periodontal status and AST levels in their GCF were measured (n = 93) and statistically analyzed. There was a statistically significant difference in AST levels between diseased periodontal sites and healthy sites (p < 0.0001). The coefficients of correlation between AST levels and probing depth, attachment level and gingival index at all sites were 0.436, 0.266 and 0.468 (Spearman rank correlation). The correlation coefficients were too small to show a definite relationship between AST levels and individual measures of clinical periodontal status. However, AST levels may help to confirm clinical observations in patients with chronic periodontitis before therapy, since AST levels differentiate active and inactive periodontal diseased sites.
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