No, your premiums will likely not remain the same year after year. Companies have the right to change their premiums, as well as a variety of other fees, network sizes, and more, within reason. Year to year, cost changes should be small, though they’ll add up. Generally, if a dental insurance company is going to raise its costs, it will have to notify you in writing. The state you live in will likely require that notification be sent to you a minimum of a certain number of days, perhaps 30 or 60, prior to the change taking effect. Ask companies about their price change policies when shopping.