After having porcelain teeth grinding, you are usually sore for about 2 to 3 days. Soreness may occur after having porcelain teeth grinding due to the irritation of the teeth, which may lead to increased tooth sensitivity. The duration of soreness varies from person to person, usually 2~3 days, but some patients are more sensitive and may take longer, requiring 3~5 days or even longer. Generally, teeth need to be ground down before wearing porcelain teeth, and then you can come back for braces. The grinding is done to leave enough space to accommodate the teeth. If it is a living pulp tooth, it will need to be protected by wearing a temporary crown, and the soreness will not usually last long. If it is a dead pulp tooth, generally there will be no symptoms of soreness, if you feel pain and discomfort, it may be gum pain, it is recommended that you can use mouthwash or cool water containing gargle mouth, usually will be relieved. If the pain has not been relieved, it is recommended to seek medical attention. If you have teeth grinding work done, pay attention to oral hygiene and do not eat too sweet and sour food. It is also best not to chew too hard food too often, so as not to cause the soreness symptoms to worsen.