My wife has DeltaCare via her Kaiser Northern California Senior Advantage plan - it's $20 per month and covers dental, hearing, extra vision & health club (fitness) benefits. Recently she had a tooth extracted & deep cleaning on 2 quadrants where the tooth was extracted (upper and lower). The procedures were:
D7210 Extraction $134.00
D4341 Perio $125.00 x 2
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Total $384.00 (total w/annual $60 [$240/4) = $444.00)
I recently signed up for DeltaCare (no wait period, fixed annual premium cost) via Costco for $90 per annum and compared my costs for the same and found that my coverage was 33% cheaper:
D7210 Extraction $80.00
D4341 Perio $88.00 x 2
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Total $256.00 (total w/annual $90.00 premium = $346)
I then checked AARP DeltaCare:
D7210 Extraction $55.00
D4341 Perio $60.00 x 2
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Total $175.00 (total w/annual $346.08 [$28.84 per month] = $521.08)
Exact same procedures, same DeltaCare provider, quite different procedure costs depending on which group coverage you elect to use. I suspect that the AARP DeltaCare may be cost beneficial if you have many different procedures in the same year, but if you only were to have the above procedures done in the year it is not.
As an added note: Individual DeltaCare directly from Delta Dental (my area NorCal) is $92.54 per annum - so it might be wise to shop around depending upon your needs.