Is wedge-shaped defect normal in a 30-year-old patient?

Whether it is normal for a 30-year-old patient to develop wedge-shaped defects depends on the specific cause and severity of the defect. The detailed analysis is as follows:

If the defect results from long-term improper brushing habits (such as horizontal brushing) or excessive tooth wear, and the damage is mild—manifesting only as slight notching at the tooth neck without significant sensitivity to hot or cold temperatures or pain—this condition is relatively common among 30-year-olds. Although not entirely normal, it can be controlled by promptly correcting these habits and generally has minimal impact on tooth function.

However, if the defect is caused by poor tooth mineralization, acid erosion, or similar factors, and the defect is severe—with obvious exposure of dentin, accompanied by pain from thermal stimuli, discomfort during biting, or even interference with normal eating—this situation is relatively uncommon in 30-year-olds and should be considered abnormal. Timely intervention is necessary to prevent further deterioration.

In daily life, it's important to use proper brushing techniques and avoid applying excessive lateral force; reduce consumption of carbonated beverages and acidic foods, and rinse the mouth after meals; undergo regular dental check-ups and seek early intervention if defects are detected; do not delay seeking professional treatment when experiencing tooth sensitivity or pain, in order to protect overall dental health.