Thanks for the D2D. Listen to your orthodontist and oral surgeon, they know your dental condition and are the best people to guide you along the process.
During the pre- and post-surgery orthodontic treatment, maintain good oral hygiene so that there are no additional dental issues. If you are wearing Invisalign, be disciplined in wearing your aligners for the recommended time so that your treatment can progress in a timely manner. If you are a smoker, it is best to stop smoking.
A few weeks before your jaw surgery, do prepare yourself mentally and physically. It is important to have a positive attitude to make the whole experience a more positive one. Arrange for your loved ones to be with you during the first few days after surgery.
Physically, rest more before the surgery. Refrain from taking drugs with aspirin as there may be undesirable side effects that may affect your surgery. It is good to check with your oral surgeon before you consume any type of medication.
As you’ll be hospitalised, bring along items for your stay, comfortable clothing for day of discharge and lip balm. On the day of surgery, you’ll need to fast (no food and drink) for five to six hours before the procedure.
For things to take note of during the recovery process after the jaw surgery, refer to this question: “What is the recovery process like after a jaw surgery?"