Periodontal/ˌperiəˈdɑːntl/ Definition 1 of 3Pro Tip 1/3Gum Focus Use 'periodontal' when referring to anything related to the gums. Periodontal diseases are primarily the conditions of gum tissues. Pro Tip 2/3Oral Health Mention 'periodontal' while discussing routines that involve caring for one's gums. My dentist suggests periodontal checkups twice a year. Pro Tip 3/3Hygiene Importance Stress the importance of oral hygiene to prevent periodontal diseases. Ignoring your brushing habits can lead to serious periodontal issues.