It is recommended to go to a professional dental hospital for examination, first determine the cause, and then carry out targeted treatment. There are many reasons for root redness, such as gingivitis, periodontitis, periapical periodontitis, etc. It is necessary to conduct a professional examination to determine the cause. If it is gingivitis or periodontitis, you can go to the dentist for periodontal scaling. In the case of periapical periodontitis, the patient needs to undergo root canal treatment to preserve the affected tooth.