Temporary anchorage devices (TADS) have proposed new and predictable treatment strategies for various types of complicated cases. Of those, remarkable open bite with steep mandible or condylar deformity has been still challenging. A case requiring mandibular molar protraction due to missing molar is also difficult to efficiently attain treatment objectives without remarkable side effects such as mesial rotation and/or inclination. As for the former issue, high mandible open bite cases with or without condylar deformity actually treated along with TADs will be shown. Regarding the latter, effective molar protraction will be discussed based upon an analytic study using 3-dimentional finite element model.
Identify the efficacy of TADs on severe open bite with steep mandible or condylar deformity.
Predict treatment outcomes for high mandible open bite using TADs.
Discuss theoretical and practical mechanics using TADs and side-effects for mandibular molar protraction.