This is quite a common problem and the cause is usually not obvious. It can be a very difficult habit to stop. Fortunately this grinding of teeth usually occurs in children while they still have their first set of teeth [milk teeth] Once the permanent teeth start to come through,which should happen next year with your son, the habit will disappear.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.