You should brush your teeth for at least two minutes by either using a timer or splitting the mouth into quadrants and brushing each section 30 seconds. Remember to brush your tongue in order to get rid of bad breath with tips from adental hygienist in this free video on oral hygiene and dental health. Expert: Jennifer Salamin Bio: Jennifer Salamin has been working as a dental hygienist for seven years. She is a graduate of Ferris State University in Big Rapids, Mich., and has been working for Dr. Brian Merkel since graduation. Filmmaker: Travis Waack