The aim of this paper was to propose a new method of bimaxillary orthognathic surgery planning and model surgery based on the concept of 6 degrees of freedom (DOF). A 22-year-old man with Class III malocclusion was referred to our clinic with complaints of facial deformity and chewing difficulty. To correct a prognathic mandible, facial asymmetry, flat occlusal plane angle, labioversion of the maxillary central incisors, and concavity of the facial profile, bimaxillary orthognathic surgery was planned. After preoperative orthodontic treatment, surgical planning based on the concept of 6 DOF was performed on a surgical treatment objective drawing, and a Jeon's model surgery chart (JMSC) was prepared. Model surgery was performed with Jeon's orthognathic surgery simulator (JOSS) using the JMSC, and an interim wafer was fabricated. Le Fort I osteotomy, bilateral sagittal split ramus osteotomy, and malar augmentation were performed. The patient received lateral cephalometric and posteroanterior cephalometric analysis in postretention for 1 year. The follow-up results were determined to be satisfactory, and skeletal relapse did not occur after 1.5 years of surgery. When maxillary and mandibular models are considered as rigid bodies, and their state of motion is described in a quantitative manner based on 6 DOF, sharing of exact information on locational movement in 3-dimensional space is possible. The use of JMSC and JOSS will actualize accurate communication and performance of model surgery among clinicians based on objective measurements.
Congenital Abnormalities ; Dental Occlusion ; Facial Asymmetry ; Follow-Up Studies ; Freedom ; Humans ; Incisor ; Malocclusion ; Mandible ; Mastication ; Orthognathic Surgery ; Osteotomy ; Osteotomy, Sagittal Split Ramus ; Recurrence

Caesalpinia sappan (C. sappan) is a medicinal plant used for promoting blood circulation and removing stasis. During a screening procedure on medicinal plants, the ethylacetate extract of the lignum of C. sappan (CLE) showed inhibitory activity on arginase which has recently been reported as a novel therapeutic target for the treatment of cardiovascular diseases such as atherosclerosis. CLE inhibited arginase II activity prepared from kidney lysate in a dose-dependent manner. In HUVECs, inhibition of arginase activity by CLE reciprocally increased NOx production through enhancement of eNOS dimer stability without any significant changes in the protein levels of eNOS and arginase II expression. Furthermore, CLE-dependent arginase inhibition resulted in increase of NO generation and decrease of superoxide production on endothelium of isolated mice aorta. These results indicate that CLE augments NO production on endothelium through inhibition of arginase activity, and may imply their usefulness for the treatment of cardiovascular diseases associated with endothelial dysfunction.
Animals ; Aorta ; Arginase ; Atherosclerosis ; Blood Circulation ; Caesalpinia ; Cardiovascular Diseases ; Endothelium ; Kidney ; Mass Screening ; Mice ; Nitric Oxide ; Nitric Oxide Synthase Type III ; Plants, Medicinal ; Superoxides

Purpose: To evaluate degree of insight, accessibility to medical care, and availability of regular ocular screening examinations before diagnosis for Korean patients with wet age-related macular degeneration. Methods: Data were collected from 95 patients by questionnaire and analyzed at Seoul National University Boramae Medical Center. Results: Although 80.0% of the patients considered themselves old, only 2.1% thought they were susceptible to wet age-related macular degeneration. Of the overall patients, 48.4% thought their disease was serious despite treatment with intravitreal injections. A majority (71.6%) thought that medical care was easily accessible, 67.4% answered that hospitals were located close by, and 90.5% answered that it was easy to make appointments and they had time to visit the hospital. However, only 15.8% answered that they had undergone regular ocular examinations before being diagnosed with wet age-related macular degeneration. Conclusions Although most patients believed that they had easy access to medical care, only 15.8% underwent regular ocular examinations. Therefore, regular ocular examinations, including fundal examinations, are required in national health screening programs. It is also important to raise public awareness of wet age-related macular degeneration by educating the general population.