The treatment plan for molar wedge-shaped defects is related to the depth of the defect, and depending on the depth, desensitization treatment, resin filling or root canal treatment is usually performed. 1. Desensitization. If a molar wedge-shaped defect is too shallow to be restored with resin, but there are symptoms of tooth sensitivity, it can be desensitized with a desensitizing agent such as strontium chloride or silver ammonia fluoride to eliminate the symptoms of dentin sensitivity. 2. Resin filling. If the wedge-shaped defect is deep, resin filling can be used to isolate external stimuli and restore the normal shape of the tooth. 3. Root canal treatment. If the wedge-shaped defect has reached the pulp cavity, root canal treatment is needed, and the direct use of resin filling will cause acute pulpal inflammation. Wedge-shaped defects in molar teeth are often caused by incorrect brushing methods, it is recommended to use the correct brushing method, and should be promptly consulted when the tooth is in discomfort.