Will two dental insurance policies double my benefits?
Having two dental insurance policies does not mean your benefits will be doubled. Many people think that if they have dual coverage—like two different dental plans from separate providers—they will get twice the payout. But in reality, dental insurance works under rules called Coordination of Benefits (COB). These rules are designed to make sure that the total amount paid by both plans does not go over the actual cost of your dental treatment.
Here’s how it works: Your primary dental insurance pays first, covering its share based on the plan's terms. Then, your secondary dental insurance (the second plan) looks at what’s left and may pay part or all of the remaining balance. However, if the primary plan already covered the full cost of the procedure, the secondary plan won’t pay anything extra. That’s why having two policies doesn’t mean you’ll get double the money.
Still, having both primary and secondary dental insurance can be helpful. It reduces your out-of-pocket expenses by covering what one plan might miss—like co-pays, deductibles, or additional procedures. This is why people ask, “Can you have 2 dental plans?” or “Can you have two dental insurance policies?” Yes, you can. And if chosen wisely, especially with one being the best secondary dental insurance, it can offer more complete protection for your dental needs.

https://dentalinsurancechecks.com/how-does-secondary-dental-insurance-work/