If you have you ever gone to the dentist and had him find a cavity that wasn't seen just 6 months ago and when it was filled the cavity was quite large then you are really going to love this. The 1-2 combination of our Diagnodent laser cavity detector and our low-radiation x-ray system allows us to find cavities before they get enormous. This saves you not only time and money, but can also save your teeth from really big fillings, root canals and crowns.