IPA: /ˌpɪərɪˈɒndəl/
KK: /ˌpɪrɪˈɒndəl/
Related to the tissues and structures that support and surround the teeth.
The dentist specializes in periodontal treatments to help patients maintain healthy gums.
Periodontal → It is formed from "peri-" (meaning around) and "odontal" (from Greek "odous", meaning tooth). The word "periodontal" refers to the area around the teeth, particularly in relation to the supporting structures of the teeth.
Think of something that is "around" ('peri-') the "tooth" ('odontal') — that's why periodontal relates to the area surrounding the teeth.