Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SCHAEKEN MJM,Effects of fluoride and chlorhexidine on the microflora of dental root surfaces and progression of root-surface caries,J Dent Res,,,1991,70,,150-153,https://cir.nii.ac.jp/crid/1570291225072600832,