The third comand the doctor gives in the text is:
Dr. Roselló.
In the text, a character named Dr. Roselló mentions some orders regarding the care of the teeth, in the first she mentions that instead of drinking soda, you should drink pure water, this because of the direct connection between sugar and tooth decay.
She secondly mentions that the person should brush their teeth and tongue every day, and thirdly she mentions that they should floss and rinse the gums, probably with mouthwash.
Lastly, she mentions that the dental hygienist should be visited every year, therefore the third command mentioned by the dentist is "floss your teeth."
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