If a posterior cross-bite isn’t recognized and corrected early, it could lead to a lifetime of unpleasant issues - like a skeletal deformity, obstructed airways, or even TMJ. If you notice that a young patient demonstrates a bilateral posterior cross-bite, make sure to address it immediately!

In many cases, the cause of a bilateral posterior cross-bite is related to an underdeveloped maxilla. You may discover that your patient relies on an abnormal tongue posture or has adopted an irregular swallow pattern. A bilateral posterior cross-bite may even be related to airways obstructed due to allergies.

In all of these cases, you will likely see good results by using the Standard Schwarz with Occlusal Coverage. Its smooth posterior bite plane gives posterior teeth plenty of space to move out of the occlusal interference. To use the appliance, simply turn the expansion screw one quarter each week to apply a slow and constant pressure on the patient’s teeth and bone. Over time, this steady pressure helps develop the arch and push the posterior segments out of the cross-bite. It also opens and expands the nasal airway by dropping the high vaulted palate.