Can you have more than 1 dental insurance plans i have a dental insurance but i need a lot of work done and after they pay i still have large amount to pay?

You will not find much benefit in purchasing more dental coverage as they will only coordinate the benefits anyway. You best bet is to work out a payment plan with the dentist for the remainder due. Dental coverage is purchased only when people need it or are going to need it especially when someone buys an individual policy. For this reason there are limits the first year or two and caps for what the policy will pay per year.