Orthodontic treatment with braces can be used for correcting mild to moderate cases of underbites. A combined orthodontic and orthognathic surgery (i.e. jaw surgery) approach may be more ideal for more severe cases. It is best to consult an orthodontist who can perform a full examination of your condition and work out with you on the best approach to treat your underbite.
Jaw pain can be due to various reasons. It is important to ascertain the root of the jaw pain and to manage it before you start on any form of orthodontic or orthognathic treatment.
For more information on orthodontic treatment, please join us at our 'Smile.Sparkle.Shine' public forum at NDCS on 24th of March 2018. http://bit.ly/2DQuCh6