Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Dent in the head due to injury need to be examined if it is small dent won t need any treatment if it is big need to consult your neuro surgeon. He will check for underlying brain concussion and plan for further treatment. Please consult your doctor he will examine and treat you accordingly. Hope I have answered your query. Let me know if I can assist you further.