<https://www.dentistrytoday.com/healthy-adults-don-t-need-twice-yearly-dental-checkups/>
<http://schema.org/description>
"Routine six-month checkups don’t improve the oral health of low-risk adults, according to a study by the University of Manchester, University of Dundee, and Cochrane Oral Health that investigated the optimal intervals between dental visits."
<https://www.dentistrytoday.com/healthy-adults-don-t-need-twice-yearly-dental-checkups/>