A 33 year old woman with centralized lumbosacral pain, after 30 months of chiropractic care was still experiencing some lower back pain and limited improvement and agreed to see an orthodontist who diagnosed a "Class 11 malocclusion with significant loss of vertical dimension, characteristic of bilateral posterior bite collapse."
From the abstract: The cotreatment approach, which integrated dental orthopedic and craniochiropractic care, ameliorated the pain and improved head, jaw, neck and back function.
Conclusion: The position of the jaw, head and vertebral column, including the lumbar region, are intricately linked. Orthodontic treatment improved the position of the mandible, which in turn enabled the body to respond to chiropractic care.
Chinappi AS and Getzoff H J Manipulative Physiol Ther. 1996 (Nov-Dec);19 (9): 607-612