“…Thus, this type of therapy presents a better treatment prognosis in patients with brachyfacial growth patterns, being based on Herbst's mechanical principles, becoming an alternative that allows to generate a more anterior posture of the mandible during the treatment of Class II cases. This mechanism of action maintains the mandible uninterruptedly projected anteriorly during all its functions and rest, becoming a stimulating factor in the sense of the potentiality of desired orthopedic remodeling [8,9,10,11,12,13,14].…”