 And it's going to be, for you, anti-cavity, anti-plaque, anti-bad news. The next time your dental hygienist in the dentist peers into your mouth, you don't want them whispering, it's filling time, it's root time, root canal time, it's crown time, it's extraction time. Ouch. No, you want to share the information with your dentist, your dental hygienist, that you're doing the SPRY, S-P-R-Y, dental defense system,