International Journal of Dental Hygiene · 2016 · 12 citations · 13 references
This 67% sodium bicarbonate toothpaste provided statistically significant improvements in gingival health and bleeding after 6 weeks of use.
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A modified gingival index for use in clinical trials.
Ralph R. Lobene, Thomas W. Weatherford, Norton M. Ross et al. · PubMed · 1986 · 642 citations
Concise Oxford Textbook of Medicine
James S Dawson · BMJ · 2001 · 76 citations
Humanity And Medicine, Philosophy Of Medicine, Oxford Textbook Grows +13