Anterior open bite and vertical skeletal dysplasia make treatment challenging and traditionally such malocclusion was treated via orthognathic surgery. With the advent of temporary anchorage device (TADs), molar intrusion exerted by miniscrews or miniplates can be considered a reasonable alternative to orthognathic surgery for the open bite malocclusion with vertical maxillary excess. Double arch intrusion is recommended to maximize the vertical change when the goal is to reduce the vertical facial excess.
On the other hand, clear aligner therapy has been recommended for open bite treatment. CAT achieves open bite closure by a combination of maxillary and mandibular extrusion and some maxillary and molar intrusion.
The aim of the study is to clarify the difference of vertical skeletal and dental change obtained by TADs therapy compare to clear aligner therapy. A group of patients treated with double arch intrusion will be compare to a group of patient treated with CAT.
Learning Objectives:
After this lecture, attendees will be able to:
Recognize the skeletal and dental characteristics of anterior open bite.
Understand the difference in mechanism of treatment between TAD versus CAT.
Understand the biomechanics of TADs therapy and double arch intrusion.
