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Objectives: To evaluate palatal bone density to allow for better selection of palatal implant anchorage sites. Materials and Methods: Computed tomographic (CT) images were obtained from 15 males and 15 females (mean age, 27 years; range, 23-35 years). Bone density was measured in Hounsfield units (HU) at 80 coordinates at regular mediolateral and anteroposterior intervals along the midpalatal suture. Results: Bone densities ranged from 805 to 1247 HU. A significant difference between male and female groups was noted, although no difference was found between left and right sides of individual palates. Palatal bone densities showed a tendency to decrease laterally and posteriorly. The midpalatal area within 3 mm of the midsagittal suture had the densest bone in the entire palate. Conclusion: Results suggest that mini-implants for orthodontic anchorage may be effectively placed in most areas with bone density equivalent to the palatal area if they are placed from 3 mm posterior to the incisive foramen and 1 to 5 mm to the paramedian side. (Angle Orthod. 2010; 80:137-144.)

This study examines social discrimination in the attributions that top executives make about the performance of other firms with minority CEOs in their communications with journalists. Drawing from the literatures on intergroup relations and status competition, our theory suggests how out-group biases and negative forms of envy toward higher-status minority CEOs may increase the propensity for white male CEOs to make negative or internal attributions for the low performance of the minority CEOs’ firms. We also examine how CEOs’ internal attributions in conversations with journalists increase the tendency for those journalists to attribute performance to internal causes in reporting on the minority CEOs’ firms. We consider how the gender and race of journalists could moderate the influence of CEOs’ performance attributions on journalists’ reports, such that female or racial minority journalists would be less easily persuaded by white male CEOs’ internal attributions for the low performance of firms with female or racial minority CEOs, and thus less prone to issuing negative statements about the CEOs’ leadership. Empirical analyses based on original survey data from a large sample of CEOs and journalists provided strong support for our hypotheses. We discuss implications of the findings for theory and research on social discrimination in the corporate elite and social psychological determinants of corporate leader reputation.

Objective: To quantify the changes in the nose after bimaxillary surgery to correct skeletal Class III malocclusion and to test the hypothesis that there is no change in the nasal width following bimaxillary surgical correction of skeletal Class III when a nasal cinch is properly used. Materials and Methods: Sixty-five adult Korean skeletal Class III patients who had received maxillary advancement/impaction and mandibular set-back surgery in conjunction with an alar base cinch suture were evaluated. The anthropometric variables of the nasal region were measured directly on the soft-tissue surface before and 6 months after surgery. Results: After surgery, the alar width and alar base width had increased significantly (P Ͻ .001), while the nasal tip projection decreased (P Ͻ .001). The nostril morphology also showed widening (P Ͻ .001). There was a trend for females with a narrow alar width presurgically to have a larger amount of nasal widening compared with those with a broader alar width (P Ͻ .05). Conclusion:There is a high probability of nasal and nostril widening after bimaxillary surgery for skeletal Class III malocclusion in Koreans despite the careful performance of alar cinch suture. Nevertheless, the authors believe that alar cinch suture was positive in limiting the nasal widening to the minimum and would consider routine application during bimaxillary surgery for skeletal Class III especially for female patients with a narrow nose who are susceptible to these changes.

This study aims at exploring a possibility of developing a creativity-based teaching program needed for enhancing prospective teachers' creative potentials based on the theories of Sawyer and Renzulli. Neuroimaging tools such as fMRI were used to identify effects of the program on pre-service teachers' neural activations on divergent thinking measured primarily by the Torrance Tests of Creative Thinking (TTCT). Since the research is still in progress, we present a theoretical model for the teaching program, and preliminary test results of comparing changes of neural recruitments in students' brain participated in fMRI with the TTCT.