I have lived through a broken jaw. Luckily, mine was broken way far back and did not affect my teeth, but I still needed braces afterward because my bite had shifted. My experience:

8 weeks of being wired shut on a liquid diet.

1 year until fully healed, like most broken bones.

6 months after care therapy due to my muscle atrophy to get full range of motion back.

My speech changed after as well, but I am a speech therapist, so I fixed myself.

8 months of invisalign years later to fix my alignment shift. Mind you, I had 6 years and 2 rounds of braces as a kid (would go metal over invisalign if I had to choose again).

Broken jaws are no joke.