The specific treatment for a fractured jaw depends on how badly the bone is broken. If you have a minor fracture, you may only need pain medicines and to follow a soft or liquid diet for a while.
Surgery is often needed for moderate to severe fractures. The jaw may be wired to the teeth of the opposite jaw to improve stability. Jaw wires are usually left in place for 6 - 8 weeks. Small rubber bands (elastics) are used to hold the teeth together. After a few weeks, some of the elastics are removed to allow motion and reduce joint stiffness.
Wiring the jaws together is considered the appropriate treatment for all jaw fractures, unless the fracture is limited to one or two teeth. Depending on the location and orientation of the fracture, surgical reduction, with wiring of the broken bone segments, is also sometimes necessary.
The wiring together of the jaws not only promotes healing of the broken bone, but also prevents displacement of the broken segments, which could otherwise inflict additional injury to the soft tissues, blood vessels, and nerves which run through the bones. Application of this procedure is somewhat time-critical, because non-union of the fracture, or displacement of the broken segments, may necessitate surgical re-positioning. I would strongly suggest that you consult with an oral surgeon so that appropriate treatment can be provided as soon as possible.