Recovering from a broken jaw requires the jaw being wired shut. This restricts one's ability to eat, speak and even keep the mouth clean, but there are measures that can be taken to alleviate suffering.
Background
The jaw is wired shut so that the bones of the jaw can heal in the correct places. The jaw often remains wired for around six to eight weeks.
Food and Nutrition
Because a broken jaw makes chewing impossible, it is advisable to invest in a blender to liquefy all food and even a strainer to get rid of excess chunks. Once liquefied and strained, the food can be taken in with a straw and easily swallowed.
Cleaning the Mouth
Using a smaller toothbrush will make it easer to brush your teeth, while using brush picks, toothpicks and mouthwash can temporarily replace flossing until it's physically possible to floss again.
Communication
Talking with a broken jaw can be difficult but can be assisted by using nonverbal forms of communication like e-mail, carrying a pad of paper and a pen and having someone helpful that can talk for you when necessary.
After Wire Removal
Even after the wire is removed, you may still need to engage in some of these practices due to soreness of the mouth from lack of use. Food may still need to be softened, albeit to a lesser extent, to avoid excess chewing.