Community Healthcare Services Center of Gudong Street Fuzhou China;
Provincial Clinical Medical College Fujian Medical University Fuzhou China;
Department of Traditional Chinese Medicine Fujian Provincial Hospital Fuzhou China;
Department of Paediatrics Fujian Provincial Hospital Fuzhou China;
Teaching and Research Office of Medical Cosmetology Department of Management Fujian Health College Fuzhou China.;
Type 2 diabetes mellitus; Oral flora; 16S rDNA sequence; Yellow thick coating;