1. University of Maryland School of Dentistry. About UMSOD. Accessed: Dec. 21 2022. At:https://www.dental.umaryland.edu/about/history/
2. American Dental Association. History. Accessed: Dec. 21 2022. At:https://www.ada.org/about/history‐of‐the‐ada
3. Procter & Gamble Oral B. Accessed: Dec. 21 2022. At:https://oralb.com/en‐us/oral‐health/dental‐flosshistory/#:~:text=But%20according%20to%20most%20sources to%20clean%20between%20their%20teeth
4. Library of Congress.Who invented the toothbrush and when was it invented?Accessed: Dec. 21 2022. At:https://www.loc.gov/everyday‐mysteries/technology/item/who‐invented‐the‐toothbrushand‐when‐was‐itinvented/#:~:text=The%20bristles%20were%20actually%20the introduced%20by%20Dupont%20de%20Nemours
5. WareM MabeM.The STM Report: An overview of scientific and scholarly journal publishing DigitalCommons@University of Nebraska – Lincoln. International Association of Scientific Technical and Medical Publishers 2015. Accessed: Dec. 7 2022. At:https://digitalcommons.unl.edu/scholcom/9