Fill in the Blanks Autocomplete activityOnline version Completar el texto con las palabras dadas by Andres Mauricio Padilla Cardona 1 many gives they perfect dental brush forget bacteria them Do our teeth get whiter and whiter the longer and harder we brush ? British researchers say no . In fact , they have tried different alternatives and in the end have discovered the way to brush their teeth . A two minute brush , without brushing too hard , the best result . If you hard , you damage your tooth enamel and gums without removing food debris or plaque . Bente Hansen , a toothbrushing expert , says that it's a good idea to hold your toothbrush like you hold a pen . " Start in one corner and work your way down the row , " she says . " Don't the tongue either ! In fact , it can contain thousands of that can cause bad breath . "
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