It is usually not possible to make a crown directly without a root canal. Without root canal treatment, the presence of inflammation in the pulp of the tooth is not completely removed and will develop further, so it is not advisable to make a crown directly. Root canal treatment can prevent the tooth from further deterioration at the source, which is very important for the restoration of the tooth. Root canal treatment is able to remove infected tissues more thoroughly, more thorough root canal treatment, and is able to control the infection through medication, thus preserving the affected tooth. If the patient suffers from acute pulpitis, acute periapical inflammation, there will be a particularly severe pain reaction, at this time it is necessary to open the pulp and then deal with the root of the tooth, so it is necessary to do root canal treatment. If you do not do root canal treatment directly do crown is likely to cause inflammation of the tooth, if there is decayed dentin at the root, directly do crown does not remove, continued infection can cause severe pain. Usually pay attention to regular checkups, do not eat too spicy and stimulating food, eat more fruits and vegetables. It is recommended to consult your doctor before making a crown and follow the doctor’s instructions to avoid complications that can cause inflammation of the tooth.