One of the first signs many patients experience with their wisdom teeth is pain or discomfort. Wisdom teeth, also known as the third molars, are the last teeth to erupt and usually erupt between eighteen and twenty-one years of age. Not everyone can have all four wisdom teeth and these can be assessed with the full mouth radiograph called orthopantomgraph (OPG). This particular radiograph will assess the position of the wisdom teeth and how many are present. Some may have all four, three, two, one or possible no wisdom teeth at all. In some cases, wisdom teeth may not erupt at all, with you believing you have no wisdom teeth, however they could be lying underneath gum level impacted. Depending on the position, they could be left alone or require removal.