 Most dentists recommend using a toothbrush labelled "soft", since firmer bristled toothbrushes can damage tooth enamel and irritate gums as indicated by the American Dental Association.
<fluency>  Most dentists recommend using a toothbrush labelled "soft", since firmer bristled toothbrushes can damage tooth enamel and irritate gums as indicated by the American Dental Association.
 Most dentists recommend using a toothbrush labelled "soft", since firmer-bristled toothbrushes can damage tooth enamel and irritate gums as indicated by the American Dental Association.