Brain abscesses caused by odontogenic infection are a rare and life-threatening condition. When dental patients show neurological symptoms such as decreased consciousness, a brain abscess should be considered as a possible diagnosis. We reported that a 65-year-old man visited the emergency room because of left facial edema, high fever, limitation of mouth opening and decreased consciousness. CT, bone scan, and microbiologic examination revealed that the brain abscess originated from left mandibular osteomyelitis with an apical lesion in tooth #36. It was hard to diagnose the location of odontogenic infection. Because there were no evidence of submandibular abscess which is a common path of mandibular posterior infection, early diagnosis was difficult. MRI and radiographs such as facial CT and brain CT revealed procedure that inflammatory findings progressed through the coronoid process, the temporal space, into the subdural space. We compared the present case to previous cases, articles published after the year 2000 in Korea and abroad were investigated. The patient was treated successfully with extraction of causative teeth, drainage surgery, intravenous antibiotics by collaboration between the department of oral maxillofacial surgery and neurosurgery. It is difficult to diagnose brain abscess because central nervous system can be infected by various pathway. As shown in this case, patients with a brain abscess caused by a dental infection should be diagnosed and treated with a multidisciplinary approach.

Mucinous adenocarcinoma (MAC) refers to a malignant neoplasm that belongs to a subtype of adenocarcinoma which produces mucin. The World Health Organization has classified MAC as a tumor of salivary gland origin and it is extremely rare. Therefore, its characteristics are not well-known. This study reports a case of MAC of minor salivary gland origin, which occurred in the oral commissure of an 82-year-old female patient, and a systematic review on existing cases of MAC of salivary origin. Based on the study’s findings, it is safe to assume that the occurrence of lymph node metastasis is an important factor in determining the prognosis of patients with MAC.

Y1Ba2Cu3O7-δ계에서 211상의 성장거동을 관찰하기 위하여 123시편을 1100˚C에서 유지시간을 변화시켜 MgO다결정 기판과 MgO 단결정 기판위에 놓고 소결시킨 후 공냉하였다. 211입자는 유지 시간이 증가함에 따라 성장하였으며MgO단결정 기판보다 MgO다결정 기판을 사용했을때 더 큰 성장을 보였다. CuO양을 변화시키면서 만든 Y2Ba1+xCu3O5+δ 시편에서 211입자는 CuO양이 증가함에 따라 조대해졌으며 0.6mol CuO가 더 첨가된 시편에서 가장 큰 211입자가 관찰되었다. Y2Ba1+xCu3O5+δ시편에서 211입자는 아주 미세하고 균일하게 분포되었다. SnO2첨가로 인한 211입자의 성장억제 효과는 (BaCuO2+ CuO)액상에서보다 CuO액상에서 더 크게 나타났다.

Y-Ba-Cu-O 계에서 123상의 성장에 미치는 Sn의 효과를 관찰하기 위하여 Sn이 첨가된 123+Sn성형체와 Sn이 첨가되지 않은 123성형체와의 couple시편을 만들었다. 1100˚C에서 24시간 유지한 후 970˚C에서 1시간 유지한 시편에서 123상은 Sn이 첨가된 123+Sn 성형체의 표면에서부터 생성되어 Sn이 첨가되지 않은 123성형체 내부쪽으로 성장하였다. 1100˚C에서 48시간 유지한 후 970˚C에서 1시간 유지한 시편에서는 123상이 관찰되지 않았으며 Y-Ba-Sn으로 구성된 결정립이 관찰되었다.