According to a dentist at Beijing Sixth Hospital, the oral hygiene status of pregnant or postpartum women he has contacted in the outpatient clinic is not optimistic. The gums are red and swollen, the breath is bad, and there is obvious tartar and soft plaque on the teeth. Experts pointed out that although there is some preliminary understanding of the harm of periodontal disease to human oral tissues and other tissues of the body, such as: bleeding after brushing teeth, exposed tooth roots, loose teeth, weakness in chewing, etc., for a pregnant woman, there will still be