I'm not going to read all 29 pages at this hour, but the chart on page 5 clearly indicates that patients with teeth should be getting 4BW every 2-3 years at the longest.

Note: if a dentist or hygienist notices something, it doesn't matter if you had FMX or pano 3 months ago. Getting another BW or PA can make the difference between a tiny filling and lots of discomfort.