Why is the co-pay for dental insurance more expensive than health insurance?

I compared the co pays on several reputable dental insurance companies and it is very expensive. Many things are not covered, even with the best dental insurance. Health insurance is usually a 10 dollar co pay for primary physicians and a 35-50 dollar co pay for specialty physicians. Is there any reason why dental insurance co pay is as expensive as it is?
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Actually, the only time the copays are so low for health insurance is when you're dealing with those high-dollar plans provided by a lot of employers. (At least those are the types of plans that were provided be employers in the past; that's changing significantly because of the cost involved.) Trust me, these are FAR from the "norm." As for dental insurance, the fact is that there are nearly as many organized networks for dental providers as there are for medical providers (where belonging to as many networks as possible is the best way to ensure you keep new clients coming in to your practice.) Dental insurance, by comparison to what you pay for medical coverage (particularly of the variety you mention) is also CHEAP. And I don't know very many people who would pay triple the price for dental insurance so they could get the $10 copay. In the end, it's really that simple.
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