Gum recession, tooth pain indicates that suffering from periodontitis, periodontitis patients most of the local treatment and local medication-based. If in the active period of periodontitis caused by the redness, swelling, pain of the gums, you can take a moderate amount of metronidazole or periodontal health and other drugs for anti-inflammatory, but it is not recommended to take long-term medication to treat periodontitis, clinically, you can be in the gums of local tincture of iodine, iodine glycerin or minocycline hydrochloride ointment for local anti-inflammatory. In addition, patients with periodontitis should do systematic periodontal treatment, mainly including ultrasonic scaling, also known as scaling. For patients with very severe periodontitis, further deep periodontal scaling, root planing, or other treatments such as gingival flap flap surgery are needed to completely remove tartar and bacteria around the teeth. If the teeth experience soreness when encountering acidic or sweet stimuli, it means that there are already symptoms of dentin hypersensitivity. At this point, you can apply desensitizing toothpaste around the teeth, which can be applied to the surface of the teeth for about 20 minutes to provide a desensitizing effect. If the effect of desensitization by applying toothpaste on your own is not obvious, you can go to the hospital for fluoride desensitization or laser desensitization treatment.