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2017 Annual Session Conference

AS17B61C - Incisor Position and Management of Symmetrical Dentition in Jaw Discrepancy

Apr 25, 2017 2:15pm ‐ Apr 25, 2017 2:45pm


Transverse jaw discrepancy leads to adverse periodontal response, unstable dental camouflage, and less than optimal dentofacial esthetics. However, with a changed environment resulting from orthopedic maxillary expansion and growth, stability has been observed. The purposes are accommodating the dentition within alveolus and to achieve desired incisor inclination to the occlusal plane and to establish a good relationship with facial profile. The goals are teeth center & upright in the alveolus and well intercuspated. They are important for the function & stability of dentition, health of the TM joint and viability of the periodontium.

With adding the TAD into orthodontic treatment choices; the boundaries of clinical orthodontic treatment has expanded considerably. The symmetrical facial pattern with symmetrical dentition is one of the primary important factors to be considered in the successfully clinical management of orthodontic patient. The development of the TAD helps orthodontists to reconsider the incisor position in clinical orthodontic treatment planning set up concerned to anterior alignment, anterior relationship (torque, tip, overjet, overbite & Bolton discrepancy), canine guidance, gingival level, crown size, anterior vertical display, and changes of skeletal vertical dimension & proportions.

The presenter will present case by using TAD and case without using TAD in combination with some other different orthodontic biomechanics to correct transverse jaw discrepancy problems. The better and more harmonious nasolabial unit and labial mental unit of the face with pleasing smile can be achieved by orthodontic treatment in consideration of incisor position with concept of total dentition shifting treatment with the aid of TAD.

Learning Objectives:

  • Identify transverse jaw discrepancy problems by using CBCT technology in combination with intraoral digital scanner. Attendees of this lecture will be able to use these clinical diagnostic instruments to recognize the clinical problems.
  • Describe the different clinical strategies to manage the patients owns the transverse jaw discrepancy with hyper/hypo divergent facial patterns. Attendees of this lecture will be able to use different biomechanics to treat clinical patients.
  • Discuss the incisor position in relations to the nasolabial & labiomental units in the transverse jaw discrepancy patients. Attendees of this lecture will be able to plan the incisor position well in the clinical treatment plan set up.


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