Dr. Ginsberg discusses a study on treatment response and stability of slow maxillary expansion

Dr. Ginsberg uses expanders to "expand" or widen your upper jaw by putting gentle pressure on your upper molars each time an adjustment is made.

"Treatment response and stability of slow maxillary expansion using Haas, hyrax, and quad-helix appliances," a study that was included in the American Journal of Orthopedics and Dentofacial Orthopedics, evaluates the short-and long-term effectiveness of different types of expanders.

Here are a few highlights of the study:
-84% of PXB correction remained with about one third of the initial expansion lost
-Haas, hyrax, and quad-helix appliances were equally effective
-Slow maxillary expansion altered the PXB patients' maxillary widths from narrower to slightly wider than the widths of the noncrossbite norms

For more information on this important study on expanders, be sure to check out the American Journal of Orthopedics and Dentofacial Orthopedics article. You can also give us a call if you have any questions.