Guardian Adding Aetna PPO Network
You may need to look at your PPO contract with Guardian Dental Insurance because they have just announced a shared network agreement with Aetna as of 2/1/2015. Guardian can now begin picking up Aetna plans at the Guardian rate if you do not have a contract with Aetna in place. This is not a purchase just a network agreement.
You need to find out if you are contracted with Aetna or Guardian (Direct or Indirect), gather the fee schedules that apply and look at the fees.
This is a new development and letters have been received by some but more will come later as Guardian figures out what they are doing with this venture.