Periodontitis is an inflammatory reaction that occurs in the supporting tissues of the periodontium, commonly presenting as gingivitis or periodontitis in clinical settings. Gingivitis, the early stage of periodontitis, is caused by food residues left after eating, which calcify under the action of saliva to form tartar. This tartar further irritates and causes inflammation of the gingival or periodontal tissues. Initially, one should visit the ENT (Ear, Nose, and Throat) department for this condition. If the specialties are further divided, one can consult the oral medicine department under ENT. If oral medicine is further subdivided, a visit to the periodontal department is necessary. Therefore, for detailed treatment of periodontitis, it is advisable to visit the periodontology department within the oral specialties to undergo teeth cleaning followed by gingival medication to improve the symptoms of periodontitis.