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骨格性上顎前突側貌におけるカンペル平面前方傾斜勾配についての臨床的考察−成人有歯顎者の側貌頭部X 線規格写真分析からの検討−
Get PDFapplication/pdfThe purpose of this study was to clarify the relationship between Camper’s plane and skeletal profile types. The angles of the Camper’s plane to FH plane between straight type and convex type skeletal profiles were compared. The Camper’s plane that marked on the soft tissue of the profile was projected onto cephalometric X−ray film and was traced in order to measure the angle between FH plane and Camper’s plane. The samples were obtained from 50 randomly selected adult female patients, and then compared between the straight type and the convex type profiles for the angle of the Camper’s plane versus the FH plane. The angles of the Camper’s plane to the FH plane showed a significant difference, which in the straight type profile was 5.2 degrees, and in the convex type was 10.1 degrees. This study revealed that the Camper’s plane based on FH plane with the convex type profile sloped down forward strongly compared to the straight type profiles.journal articl
上顎第二大臼歯と上下顎第一小臼歯抜去を行なったAngleⅡ級１類症例
Get PDFapplication/pdfThe report describes orthodontic treatment of a 15−year 5 months old male patient with Angle Class II div. 1. The antero−posterior skeletal relationship was skeletal Class II. The upper and lower incisors were labially inclined and the molar relationship was Angle Class II. The patient was diagnosed as skeletal maxillary protrusion with upper and lower incisor labial inclination and crowding. After the extraction of the upper second molars, Distal Jet appliance was placed to treat the Class II molar relationship. Then, after the extraction of the upper and lower first four premolars, ”018 slot pre−adjusted edgewise brackets were placed to treat the upper and lower incisor labial inclination and crowding. Finally, the upper third molars occluded to the lower second molars. After orthodontic treatment, the facial profile was significantly improved, and an acceptable occlusion was achieved.journal articl
局所麻酔薬の組織血流量への影響−家兎背部への皮下注射による皮膚血流量の変化−
Get PDFapplication/pdfWe examined the influence of lidocaine, mepivacaine, ropivacaine , bupivacaine , and levobupivacaine on skin blood flow in rabbits using a laser Doppler blood flowmeter. New Zealand White rabbits were anesthetized with sodium thiopental. 0.2 ml of 0.125～ 2.0% lidocaine, 0.125～3.0% mepivacaine, 0.125～0.75% ropivacaine, 0.125～0.5% bupivacaine, 0.125～0.75% levobupivacaine, 2.0% lidocaine with adrenaline (A) (1/80,000), and 3.0% propitocaine with felypressin (0.03 IU) were injected subcutaneously into the back skin of the rabbit’s. Physiological saline (0.2 ml) was injected as a control. We measured the skin blood flow using a laser Doppler blood flowmeter before and 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, and 10 minutes after the injection. The blood flow after the injection of each local anesthetic was converted into a percentage of the control value (before injection). The mean values of the skin blood flow before the injection in each group showed no significant differences. The skin blood flow was increased 30 seconds after the injection of physiological saline and showed no significant changes from 1 to 10 minutes after the injection. The skin blood flow was significantly increased by the subcutaneous injection of 0.125, 0.25, 0.5, 0.75, 1.0, and 2.0% lidocaine, 1.0, 2.0, and 3.0% mepivacaine, 0.125, 0.25, and 0.5% bupivacaine, and 0.75% levobupivacaine. The skin blood flow was significantly decreased by the injection of 0.125, 0.25, 0.5, and 0.75% mepivacaine, 0.125, 0.25, 0.5, and 0.75% ropivacaine, 0.125, 0.25, and 0.5% levobupivacaine. Lidocaine and bupivacaine increased the skin blood flow dependent on their concentration. On the other hand, ropivacaine decreased the skin blood flow dependent on its concentration. Mepivacaine decreased the skin blood flow at concentrations lower than 0.75% and increased it at a concentration higher than 1.0%. Levobupivacaine decreased the skin blood flow at concentrations lower than 0.5%, and increased it at those higher than 0.75%. The 0.5% bupivacaine and 2.0% lidocaine led to the most marked increase in skin blood flow, and 2.0% lidocaine−A and 0.75% ropivacaine led to the most marked decrease.journal articl