Yes poor teeth can effect your over all health.
You can get:
2) Heart Disease
5) Birth of Pre-term or low weight babies
6) Not counting just over all mouth and tooth pain. which can leaded to head aches and eyes pain
You also may what to try and look for an HMO dental Insurance plan or even a discount dental plan. These types of plan normally do not have a maximum limitations or long waiting periods they are also cheaper in coast. Here is a link for that if you want to check it out.