Ajai, Shilpa, and Rupali Agnihotri.
"A Comparison of the Efficacy of Charcoal and Non-Charcoal-Bristled Electric Toothbrushes on Coffee Stain Removal and Surface Enamel Roughness: An in vitro study." American Dental Hygienists' Association
100.3
(2026):
10-20.
Web. 13 June. 2026.