Hot compresses are not recommended for swelling caused by a toothache, but cold compresses can be applied to reduce the swelling and relieve the pain. Toothache face swelling is a symptom of apical inflammation combined with interstitial infection. After the dental nerve pus is discharged outward through the skin, there is swelling of the jaw and face, it is not recommended to apply hot compresses, which may cause the systemic spread of inflammation, which is not conducive to the reduction of swelling. Cold compresses can be applied, using cold towels or ice cubes, which can relieve the swelling to a certain extent. At the same time with root canal treatment. If there is a restriction of mouth opening can not be immediately dental treatment, you can be prescribed with systemic anti-inflammatory, after the inflammation subsides in time to the stomatology department for medical treatment. Therefore, it is not recommended to use hot towels to apply hot compresses to the face caused by toothache, but to use ice or cold towels to apply cold compresses to relieve the swelling, while cooperating with dental treatment.