https://www.selleckchem.com/pr....oducts/z-lehd-fmk-s7
Based on the 2018 classification, we aimed to determine the prevalence, distribution, and progression of periodontitis in the rural Chinese population without access to dental care. In all, 404 subjects (28.7 ± 8.9 years, MF=182222) were randomly enrolled in 1992 and re-called in 1996. With the new classification, the prevalence and distribution of stage, grade, and extent were characterized. Stage progression was compared with the progression of clinical attachment loss (CAL) and radiographic bone loss (RBL). At baseline, 94.1
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