At my dental office, they can tell you the total cost without insurance which is the maximum they would charge for any procedure. If you paid in cash in full, they would do a discount (for non-insured).

For those insured, it depended on the insurance you had but they would give you a rough estimate based on the plan you had (mostly because they can’t be 100% certain what the insurance will cover down to the exact dollar amount.

In my experience the estimate is often off but close enough that I am not worried I’d owe an insane amount afterwards.