How long do you have to wait to use your dental insurance once you sign up?

My teeth are hurting and I have no insurance as of now. I am not covered at work since i am considered part time. My boss is actually in the same situation as she hasn't been with the company for the mandatory period of time...3 months I think. She told me I can buy coverage on the side. But how soon can I use my coverage? And is it like a cell phone contract where you gotta sign on for x number of years? thanks!
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Get on the eHealthPlus plan. It has no waiting periods and no contracts. Most every dental insurance has waiting periods.
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