Is a 9mm Overjet Serious but Small Enough to Get Braces?

here in Missouri Medicaid pays only for the worst of the worst orthodontic problems.  One automatic qualifier is an overjet (sometimes incorrectly called an overbite) of 9mm or more....so, yes, I think you have a major problem that should be fixed!

This degree of overjet needs to be corrected. 5mm or greater must be evaluated with surgery as a possible treatment plan. Jaw surgery is not always needed but likely will be discussed.

A 9mm overjet is pretty significant and should be addressed as early as possible.  It sounds like a Class II corrector is needed to be able to correct your malocclusion if you are still in a growth spurt.  Otherwise, a surgical option may be the only other options you have to correct.  I would imagine that correcting this overjet would have a profound change on your occlusion and dental health as well as a profile change that may be warranted.  I would seek an orthodontic consultation as soon as possible to evaluate your options!