Lip Incompetence
Excessive Drooling
Thumb Sucking

A normal rest posture includes lips that remain closed. When the lips do not meet at rest and the mentalis muscle strains during closing, this is known as lip incompetence. 

This may be interrelated to tongue-thrusting, digit-sucking or chronic airway obstruction from allergies or enlarged tonsils or adenoids. Lip incompetence cannot only have negative cosmetic consequences, but it can also lead to excessive drooling, messy eating, or dry mouth and gingivitis if the patient is also mouth-breathing. 

The therapist works closely with the necessary specialists such as ENT’s and allergists to help resolve negative factors that could be contributing to OMD.