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Tooth three-dimensional control during space closure and case refinement will be demonstrated through several clinical cases; the technique biomechanical rationale will be explained through a quick review of the history of orthodontics; the scientific evidences that support the procedures will be presented, critically assessed and discussed; finally some conclusions on the subject will be drawn.
Learning Objectives:
Perform tooth 3D control.
Manage asymmetric space closure.
Recognize when traditional anchorage and or TADs should be utilized.
Anchorage Requirements for Treating Patients with Missing Maxillary Lateral Incisor
Most dentists have tackled the dilemma of treating patients missing one or both maxillary lateral incisors. The anchorage requirement depends on the choice of treatment. This program will provide a review of the current proposed forms of treatment for cases missing one or both maxillary lateral incisors and discuss anchorage consideration for the treatment alternatives. Clinical situations will illustrate the variability in the decision process.
Learning Objectives:
Recognize the incidence of missing maxillary lateral incisors.
Correlate the significance of congenitally missing lateral incisors to the whole dentition.
Physiologic Anchorage Control: Mechanism and Clinical Application
Upper molar tipping forward with growth has been verified by study data of several craniofacial growth centers in US, Canada and China. From anchorage control perspective, a tipback moment of 24 hours during whole treatment period is certainly beneficial to preventing this kind of physiologic anchorage loss. That expends anchorage control concept from dealing with reaction force of appliance to all source of forces including growth force, masticatory force etc. This lecture will introduce a new strategy of anchorage control and its clinical application.
Learning Objectives:
Define the mechanism of Physiologic Anchorage Loss.
Identify how to prevent Physiologic Anchorage Loss and its effects on whole anchorage control.
Distinguish the significance of Physiologic Anchorage Control on anchorage preservation.
