When a patient has a cavity that has already damaged the dental tissues, causing severe damage to the dental tissues, the general advice for the patient is to go directly to a regular dental hospital for treatment. The best approach is generally to extract the tooth; extraction is the best option, but it should be done when the body is in good condition to remove the damaged tooth. Additionally, patients should pay attention to oral hygiene and can take some anti-inflammatory drugs orally to effectively control inflammation. Furthermore, during tooth extraction, it is crucial to pay attention to local hygiene, be mindful of food residue inside the mouth, eat and drink before the extraction, keep a relaxed mood, and follow the doctor's advice after extraction. Generally, do not eat for two hours after the surgery, do not brush your teeth or rinse your mouth within a day, avoid touching the wound, and manage your diet reasonably.