Average mandibular growth in normal subjects who did not require any orthodontic treatment during the phases of growth and development follows a forward and upward rotational pattern. Class II malocclusions on the other hand often portrays vertical characteristics with retrognathic chin positions. Treatment objectives for such malocclusions include correction of the jaw relationships, establishment of a harmonious soft tissue profile and mimicking of the normal forward and upward mandibular rotation. This type of change requires meticulous management of posterior tooth eruption/extrusion, especially the maxillary molars. It is essential to provide adequate anchorage to these teeth in pursuit of the noted treatment goals. Contemporary mini-screw implants fulfill this role superbly. The objective of this presentation is to illustrate how through translation research these clinical objectives can be attained.
Define the malocclusion which will benefit from this contemporary anchorage approach.
Demonstrate the use of mini-screw implant anchorage to attain a harmonious chin position.
Evaluate the correction of a retrognathic chin position.