PCSO Program Talk Table 1. Responses to PCSO Survey on Class II Corrections Oregon Health & Science University 1. Approximately what percentage of the patient cases in your clinic are growing patients? What percentage of the growing patients have Class II malocclusions? University of Washington 70% 35%-40% * 73.6% of the population was 18 years or younger at assignment (653/887) * 44.6% of the Class II patient population was 18 years or younger at assignment (291/653) * 63.0% of the population was 15 years or younger at assignment (559/887) * 46.3% of the Class II patient population 15 years or younger at assignment (259/559) * 41.3% of the total patient population is Class II Division 1, Class II Division 2, or Class II subdivision (366/887) 2. Approximately what percentage 25% of the patient cases in your clinic 35%-40% are nongrowing patients? What percentage of the nongrowing patients have Class II malocclusions? * 26.3% were >18 years old at assignment (233/887) * 31.8% of the patients >18 years at assignment were Class II of some kind (74/233) * 36.9% were >15 years old at assignment (327/887) * 32.4% of the patients >15 years at assignment were Class II of some kind (106/327) 3. For growing patients with Class II 60% skeletal and dental malocclusions, 40% what is the ratio between those treated with one-phase and those treated with two-phase treatment protocols? It depends at what age they show up and if they want treatment at that point. Most patients who present at an age where Phase I is reasonable are usually given the option to have it 4. Is there a general treatment philosophy (one-phase vs two-phase treatment protocols) for treating Class II skeletal and dental malocclusions in growing patients at the school? In general, we render age-appropriate care when we think it will be effective and the patient's behavior permits it. Ultimately, the faculty assigned to the case decides if treatment is indicated at that point and what it will be 34 No. Each attending faculty makes the ultimate decision. The treatment protocol choice is based on the effectiveness and efficiency of the treatment, the patient's estimated motivation/compliance level, the potential psychosocial benefits of the treatment, and the risk of incisal trauma PCSO Bulletin    Summer 2020