For many dental insurance companies dental implants fall under a cosmetic dental service or cosmetic dentistry.  The problem is that many dental insurance will not cover or offer benefits for this type of dental service.  One reason why that is the case, is that a general dentist normally do not provide implant services. In order to have implants you have to see a cosmetic dentist or a specialist. Keep in mind that many dental insurance plans do not cover for specialist either.   

Another reason is a cost factor. The cost of dental implants are still much higher the the cost of denture, partials and bridges that are normally covered under most dental insurance plans.   

You may be able to get dental implant services at a discount plan buying a dental discount plan. With a dental discount plan you can save around 15 to 20 percents off the cost of dental implants if there are dental providers within the plan network.