Dental insurance is a contract between your employer and a dental insurance company. The benefits that you will receive are based on the terms of the contract that were negotiated between your employer and the dental insurance company and not your dental office. The goal of most dental insurance policies is to provide only basic care for specific dental services. The services selected are based on the cost of the policy to your employer and the negotiated arrangements with the dental insurance company.
Because the benefits you currently have are decided between your employer and the insurance company, many services are not covered. The selection of non-covered services is not based on what you need or want, but is based strictly on the contract with the insurance company.