Long-term follow-up studies have revealed that the shields of the function regulator are capable of influencing the circumoral soft tissue capsule in size and shape. As a result, the disturbed or restricted displacement of teeth and jaw bones could be corrected. The dramatic changes in dentoskeletal development thus achieved demonstrate the morphogenetic impact of the circumoral capsule. In clinical application, the function regulator offers the opportunity to realize Roux's concept of functional orthopedics in the treatment of orofacial dysmorphology, as has long been practiced in the medical field of orthopedics.