I would call a few dentists in your area and price a few services like cleanings, fillings, and crowns. Then compare the cost of a cleaning and a crown without insurance to the price of your premium over a year. If the premium is close to or higher, id pass.

Most dental insurances have such low annual limits that it will not cover a significant portion of surgeries anyways. My major client for example, has insurance capped at $2k/yr.