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This lecture will analyze patient-related factors that can help the clinician to improve the efficacy and efficiency of Class II and Class III treatment independently from the type of appliance. Two such factors are the timing of treatment and individual patient responsiveness. Functional appliances used for the treatment of Class II malocclusion are effective in altering short-and long-term mandibular growth and mandibular sagittal position if active treatment includes the pubertal growth spurt. Optimal timing for Class III malocclusion occurs during the prepubertal phases of development when the circummaxillary sutures offer less resistance to maxillary protraction compared to the pubertal phase. To predict individual patient responsiveness for both Class II and Class III treatment, mandibular morphology should be evaluated.
Learning Objectives:
Understand the role of those factors that can help the clinician to improve the efficacy and efficiency of Class II and Class III treatment in the growing patient.
Evaluate the role of treatment timing on the short- and long-term outcomes of Class II and Class III treatment.
Recognize the pre-treatment craniofacial features for the prediction of successful or unsuccessful outcomes of Class II and Class III treatment.