Could it posterior crossbite or could the rest of my molars, except the last, be leaning inwards. i have gum, neck and face soreness all the time?

Look elsewhere: See your physician or a chiropractor or both to determine the cause of your neck and face soreness. Malocclusions alone do not cause those symptoms. Tension, stress, and habits such as bruxism might contribute to those symptoms. You can also check with your dentist for an evaluation.

Could also be: Malocclusion can put untoward stress on teeth resulting in soreness. Malocclusion can trigger untoward neuromuscular responses. If you have a malocclusion the place to stet is with a "malocclusion fixer, " a qualified orthodontic specialist. It would also be prudent to be checked by your family dentist and by your general physician to rule out non-malocclusion causes.

TMJ syndrome: Temporo-mandibular syndrome is the second most frequent cause of facial pain after dental pain. Headache, earache, face pain, neck pain and gums pain are the common symptoms. Proper diagnosis is the key to successful treatment. See Orofacial Pain specialist for a consultation and treatment options.