If you haven’t had any treatment involving your teeth a sliding genioplasty or orthognathic surgery, you’ll be able to eat normally quite soon. Due to the effects of general anesthesia, you should only feel nausea for the first few hours. You may prefer to eat softer or pureed foods initially if you have intra-oral sutures. Patients should prepare accordingly in advance and purchase juices, yoghurt and soups to have during for the first few days after surgery.
After a sliding genioplasty you should be very careful not to put too much force on the lower jaw e.g. by eating raw meat (steak) or biting an apple. The jaw is really weak in the chin area and it will take about 6 weeks until it has regained it’s original strength.