Here are a few tips for you.
If you are going to the Dentist and will be in the chair for 3 and 1/2 hours. DON'T drink 2 cups of coffee on the way.
The instillation of a crown requires two dental visits, AKA twice the torture.
Fillings from the early 70's do not last a lifetime, and must eventually be replaced, preferably before a great chasm of decay has begun hiding underneath.
When the Dentist says things like "WOW! That is deeper than I thought", brace yourself.
Hearing words like 'Grand Canyon' out of your Dentist's mouth while he is using a mini jack hammer in your mouth is also not good.
In a strange natural phenomenon, you mouth and lips can be numb for hours after a dental visit, and yet the pain appears as soon as you walk out of the dentists office.
If you have dental work to be done, I recommend a Monday morning, preferabally a dreary rainy one. It gives you an excuse to ignore your children, and the mess they are making and crawl in bed for the rest of the day.
On a completely unrelated side note.
If you are a homeschooler. Watching a documentary of Christopher Columbus and taking notes IS a full days schoolwork!