if they spend $150 per year on one of the discount plans through DP Brokers and they save $600 on a crown or partial, then no harm - and the client comes out ahead..
Maybe they do, maybe they don't.
The problems with discount plans are considerable, not the least of which is a lack of accountability.
How do you know that $1100 crown (what my dentist charges) will really cost you only $600? Maybe the $600 is just his fee but lab fees are another $150 - $200. He may charge extra for an unnecessary cleaning or debridement before starting the work or may try to talk you into periodontal work that is not necessary.
Of course these are just the dollar issues. As has been pointed out, typically these are inexperienced dentists that join networks. My dentist does take assignment from most carriers but is not in network. He charges full price and clients who have coverage pay the difference in what their plan allows and his price.
I have 5 crowns and no problems. My wife has one and it has been a problem as long as she has had the crown. She used a different dentist and has never been satisfied with the work. Not all dentists, even those who have been in practice for a while, have equal skills.
As Paul indicated, if there is a dispute you do not have an advocate. While the dentist may be in the Aetna network for insured patients that does not mean they are in the Aetna discount network. Carriers often have more than one dental network with different price structures.
The problem with dental networks is like the stand alone medical discount cards. If the provider refuses to honor the discount you don't have an advocate.
The result is a client issue.
I offer DP along with the Humana (Comp Benefits) and now the Time
DHMO plans. I don't promote them, but do make them available if anyone asks.
If you want client complaints, the best way to do that is to push a dental plan.