At the end of the day, it’s just a marketing plan for the covered dentists.
And nowadays, it's morphed into a crazy scheme where large Dental Service Organizations (DSO) offer super cheap cleanings to the insurance, and then treat their dentists and hygienists like sales staff who try to push bullshit like fluoride treatments and sealants with 1,000% markups that you have to pay for out of pocket.
It's crazy what the situation is, I stopped going to certain dental practices and had to find an independent one I could trust. I'd almost rather forego the employer provided insurance cleanings and pay cash just to makes sure the incentives are aligned and the dentists and hygienists aren't trying to scam me.
Dental’s historic lack of insurance and relative ease of opening a clinic has obviously made it much more cost-competitive than medical care, so we kind of feel like we are contributing to a future problem by using dental insurance, but it’s hard to turn down the savings now.
I agree. It feels awful to make a rational choice in your best interest and to see the mess it can cause at scale. The reason health insurance is such a mess in the US was from a tit-for-tat battle of people operating in a rational way (providers, insurance companies, and drug companies).
Insurance companies have pre-negotiated rates for everything. I didn't like paying for my dental insurance, and asked my dentist what the cost would be for 2 cleanings/year with no insurance. Something like $120/cleaning and another $75 for x-rays periodically. No cash discount because they'd run into legal issues by offering a better rate for non-insured patients.
My insurance is around $10/month. Since I get my teeth cleaned 2x/year, the rational choice is to buy my insurance and realize I breakeven after the first cleaning. But it feels bad. If my dentist is getting $40/cleaning through insurance, I'd rather be able to pay him $45/cleaning and keep insurance out of it all.
This blog post describes some of the mechanics in a bit more detail.
http://selfpaypatient.com/2014/01/03/insured-patients-can-sa...