If you have decided that you want to try dental implants as an alternative to dentures or plates, then your dentist might ask you to have a CT scan before you start the process. CT scans can help the dentist to see the layers of tissue in your mouth, and will give them a much clearer image than that offered by x-rays. The CT scan is simple and easy to do, and there are several reasons why your dentist might consider having a scan the next step in getting the implants you need.