The most common risks of buccal fat removal are bleeding, infection, and hematoma formation. An asymmetric result or minimal changes after the operation are relatively common and may require revision surgery. Injury to vital structures such as the salivary duct and facial nerve is rare.
Your surgeon and his staff will explain the risks of the surgery in detail. You will be asked to sign a consent form affirming that you understand the procedure you will be undergoing, and the potential risks or complications associated with it.
Before you decide to undergo buccal fat removal surgery, you need to consider whether this procedure will fulfill your goal and if the risks and potential complications are acceptable. If you are unsure of committing to the postoperative process and any possible intervention necessary to treat an unwanted result, then you should not proceed with the operation.