Is There a Doctor in the House?

The dentist has been visiting our house quite frequently. Every night, actually.
After struggling with the kids for a number of weeks to brush their teeth, I came upon the idea of pretending to be a dentist. At bedtime, the kids take turns seeing the dentist, who speaks with a horrible English accent and is mysteriously able to detect all of the treats they ate that day while cleaning their teeth.
I'm not sure which requires more imagination - that I could be a medical professional or that a trip to the dentist could be fun.