Validity of Arch Relationship Measurements in Digital Dental Models / 대한소아치과학회지

The aim of the present study is to evaluate the validity of orthodontic measurements including tooth width, Bolton ratio, overjet and overbite on the digital dental models.Dental models of the subjects aged 12 to 18 were obtained in 3 different forms, which were conventional stone model, digital model created with Freedom HD model scanner, and digital model produced with CS3600 intraoral scanner. After measurements were made on the models, reliability and reproducibility of the measurements were evaluated by using intraclass correlation coefficient, while validity was assessed with paired t-test.As a result, significant reliability and reproducibility were verified, with intraclass correlation coefficient exceeding 0.750 in all groups. Measurements of the model scanned group showed an adequate validity in overall and anterior Bolton ratio, overjet, and overbite. Intraoral scanned models showed an adequate validity in anterior Bolton ratio, and overjet.Measurement on intraoral scanned digital models can be considered as an alternative for young children who have difficulty in taking impression. Furthermore, careful considerations on measurement error should be made in clinical situations.

Intraoral Scan for Virtual Skull-Dentition Hybrid Images of Young Patients / 대한소아치과학회지

Additional dentition images are needed because the dentitions are distorted in cone-beam computed tomography (CBCT) due to streak artifacts and non-uniformity of the x-ray beam.The purpose of this study is to evaluate the feasibility of improving the dentition image of CBCT scan with intraoral scanner instead of plaster models.Maxilla images from plaster models, two intraoral scanners, and CBCT of 20 patients aged 12 to 18 were used in this study. With one of the intraoral scanners, the full arch was scanned by three segments and combined into a complete full arch. Virtual skull-dentition hybrid images from intraoral scanners were superimposed with the images from plaster models to evaluate the coordinate value difference and distance at reference points.The results showed that the coordinate value difference and distance were smallest with segmented intraoral scan, which showed only 2 ㎛ distance. Intraoral scan may provide good dentition images for virtual skull-dentition images.

Combined use of a double-lumen tube and Fogarty catheter to prevent the endobronchial spread of infection: a case report / 대한마취과학회지

Huntington's disease is a neurodegenerative disorder with an autosomal dominant inheritance pattern. Patients with Huntington's disease show an increased risk of aspiration pneumonia when the pharyngeal muscle is invaded. We report a case of advanced-stage Huntington's disease in which the patient received right middle lobectomy for a lung abscess caused by repeated aspiration. The best lung isolation technique has not yet been established in these patients. We successfully performed selective lobar isolation of the right lower and middle lobes using a double lumen tube and a Fogarty embolectomy catheter.

Cavernous Sinus Dural Arteriovenous Fistula Mimicking Tolosa-Hunt Syndrome

No abstract available.

Spontaneous Spinal Epidural Hematoma in a Patient on Cilostazol / 대한뇌졸중학회지

Cilostazol is a phosphodiesterase inhibitor that has been shown to have similar efficacy in stroke prevention but fewer hemorrhagic events compared with aspirin. We report a case of spontaneous spinal epidural hematoma (SSEH) in a 67-year-old woman who has been treated with cilostazol for cerebral infarction. The patient was presented with sudden neck pain and right hemiparesis. Thirteen days after the onset, she recovered completely. Even cilostazol, which is a relatively safer drug in terms of bleeding risk compared to other antiplatelet agents, may cause SSEH. Therefore, physicians should keep in mind rare, but potentially fatal, bleeding complications such as SSEH when prescribing antiplatelet agents.