Tooth wear can be examined by the following methods: 1, visual inspection: teeth with flat or even pit-like structures are the most obvious manifestation of tooth wear; 2, hot and cold probing: the degree of tooth wear is judged by probing the sensitivity of teeth to hot and cold. Clinical appearance of teeth with defects or wear should be promptly sought after the appropriate treatment according to the wear and tear situation. When the wear is slight, the position between the teeth can be adjusted and the occlusal relationship can be adjusted, and when the symptoms are serious, corresponding treatment such as filling can be carried out.