Hi Mark. I have two questions, the first regarding an implant: Is there any risk of nerve damage even with the use of a CT scan?  And one when it comes to the wisdom teeth: I am 23 years old and I have 4 mesial impacted wisdom teeth. I believe that they are fully surrounded by bone. A dental surgeon told me that one of them is causing minor bone damage around the 2nd molar. Is that the equivalent to root resorption? Is this a valid reason for extraction even though bone would have to be taken to extract the wisdom tooth? How much do wisdom teeth typically move at my age and will they likely/inevitably cause root resorption of the 2nd molar since they are impacted and there is not space for them to erupt? Does the likelihood of these problems, justify extracting them now even though I am experiencing no symptoms, just to avoid the increased extraction risks?