Originally Posted by flossie
Take a look at your past dental history. Have you had to have fillings every time you've been for a check up? Do you have a lot of heavily restored teeth that may end up needing root canals and/or crowns or is your mouth relatively healthy except for this last experience? If all you'll need in the future is check ups and cleanings it is probably not worth purchasing a dental plan as you will probably end up paying more in yearly premiums than the cost of your check up and cleanings.
You really have to shop around for dental insurance and know what is and is not covered. You want to know what percentage is covered, whether there is an annual deductible, how often they will pay for treatment on the same tooth, etc.