Periodontitis is a very common oral disease. It usually attacks the gums and periodontal tissues of the body and is a chronic and destructive inflammatory disease. It can also lead to acute periodontal infections for specific reasons. Periodontal disease is mainly caused by the long-term accumulation of microorganisms on the gum surface. For example, if food debris accumulates in the teeth for a long time after eating and is not removed in a timely manner, microorganisms can lead to inflammation of the gums for a long time, with symptoms of swelling and pain, thus forming periodontitis. Also, calculus and misalignment of teeth are prone to periodontal diseases. Some systemic diseases can also have an impact on periodontitis, for example, diabetes can aggravate the severity of periodontitis. Usually, the treatment of periodontitis starts with the removal of inflammation, such as plaque and calculus; then the teeth that cannot be retained in the mouth need to be extracted and the damaged cavities need to be filled. Secondly, we need to restore the teeth, which usually includes dental implants and extractions. Finally, the patient is recommended to brush the teeth regularly, rinse the mouth after meals, and take care of the teeth regularly to prevent the attack of pulpitis. Damage to the periodontal tissues due to various reasons, such as excessive brushing, hard toothbrush bristles, or stimulation by hard objects during eating, trauma, etc., can cause damage to the normal periodontal barrier tissues and bacterial invasion, leading to acute periodontitis. Pulpitis not only brings severe pain to the body, but also has a huge impact on the teeth. Patients are advised to take appropriate treatment promptly when pulpitis is detected.