Porcelain teeth that have just been installed and are afraid of cold and heat can be observed and treated first. If the symptoms worsen or develop into symptoms of pulpitis, desensitization, re-bonding or root canal treatment will be required. 1. Provisional observation. If the teeth are not root canal treatment wear porcelain teeth, due to the production process need to grind part of the tooth tissue, dentin exposure will lead to dentin sensitivity symptoms, hot and cold stimuli produce pain and discomfort, generally in the bonding of porcelain crowns to the symptoms will slowly disappear. 2. Desensitization, bonding or treatment. If the symptoms do not subside after observation, the bonding agent may not be tight and needs to be re-bonded, and the exposed crown can be desensitized with medication first. If the symptoms are aggravated by hot or cold stimulation and pain occurs, root canal treatment is also required depending on the situation. Just installed porcelain teeth are afraid of cold and heat, it is recommended to go to the hospital to check the teeth and crowns found that the problem is dealt with in a timely manner to avoid aggravation of the symptoms.