You have not mentioned the age of your son. The diagnosis and the treatment plan depends upon that.Normally lower baby central incisors shed at the age of 6 years and the adult tooth comes in that place but sometimes the baby teeth does not shed and the adult tooth starts coming and it usually comes towards the tongue side of the tooth, in case of lower. If that is the case then you visit your dentist and get the baby tooth pulled out. The adult tooth will come to that position. You don't have to worry. It is the common problem with children. In this the milk tooth is called the retained tooth and it has to be pulled out. For more info on retained teeth you can visit the following link on our website..
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