Dental insurers are prohibited from limiting fees for services not included in dental benefit plans.

It is importnat to note that covered services are defined as:

    " dental services that are reimbursable under the applicable insurance
    policy or subscriber agreement or would be reimbursable but for the
    application of contractual limitations such as benefit maximums,
    deductibles, coinsurance, waiting periods or frequency limitations"

You can download the full text of the law below.