Actually at Bristol Dental Clinic, we say that even flossing and brushing alone while good is not enough! An ideal patient would at least once a day, clean between their teeth and massage their gums with an interdental brush in addition to flossing and brushing with an electric toothbrush (for adults). Brushing twice a day and definitely doing the three suggested things before going to sleep will be a good practice.
At Bristol Dental Clinic, we always individualize the oral aids for every patient as each of them present a different condition.