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Volume 51, Issue 9
Displaying 1-6 of 6 articles from this issue
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Emiko ISOMURA, Yumi YAMAMOTO, Keiichi YOSHITOMI, Toyomi OKAUCHI, Kei A ...2005 Volume 51 Issue 9 Pages 448-457
Published: September 20, 2005
Released on J-STAGE: April 22, 2011
JOURNAL FREE ACCESSWe examined whether tooth eruption would occur normally in grafted allogeneic mandibular bone.
Using vascularized composite tissue transplantation, we extracted portions of immature mandibles including the tooth germs from young beagle dogs and transplanted them into unrelated immature or mature beagle dogs. In addition, we prepared vascularized gingival flaps from mature dogs and grafted them onto the mandibles of unrelated immature dogs. Mandibular bone including tooth germs without covering gingiva from immature dogs was also transplanted either to immature or mature recipient dogs, and the grafted bones were covered with recipients' gingiva. Then, we examined tooth eruption in these grafted mandibular bones.
Normal tooth eruption was observed only in the mandibles transplanted to the young recipient dogs. In the mature dogs, tooth eruption from the gingiva was delayed; the whole crown was covered with a cap of gingival tissue, which was not a gingival overgrowth.
It is suggested that tooth eruption depends on the age of the recipient, regardless of the overlying gingival tissues transplanted.View full abstractDownload PDF (6925K) -
Kunio YOSHIZAWA, Akira TANAKA, Daisuke TAKAZAKURA, Shinichi NOZAKI, Ki ...2005 Volume 51 Issue 9 Pages 458-461
Published: September 20, 2005
Released on J-STAGE: April 22, 2011
JOURNAL FREE ACCESSSalivary gland tumors of the maxilla are rare. A case of adenocarcinoma, NOS in the maxilla is reported in this paper. A 67-year-old woman had been aware of a mass in the hard palate and tenderness at the base of ala nasi for a few months. The lesion was clinically suspected to be a benign maxillary tumor and was excised under general anesthesia. The mass was pathologically diagnosed as adenocarcinoma, NOS. It was suggested that adenocarcinoma, NOS arose from the minor salivary gland and was entrapped in the maxilla.View full abstractDownload PDF (1762K) -
Kazutoshi NAKAOKA, Yoshiki HAMADA, Shin MORIMURA, Akiko FUKUI, Taiichi ...2005 Volume 51 Issue 9 Pages 462-465
Published: September 20, 2005
Released on J-STAGE: April 22, 2011
JOURNAL FREE ACCESSChronic subdural hematoma (CSDH) generally occurs following a head injury. To our knowledge, no studies have previously reported on the correlation between CSDH and oral and maxillofacial injury.
We report the clinical course of 2 patients who suffered from CSDH several months after a mandibular fracture or a multiple facial fracture. In addition, we retrospectively studied the history of oral and maxillofacial injury in 120 patients with CSDH who underwent surgical treatment at the Department of Neurosurgery, Toho University Omori Hospital during the past 5 years. Ten (8.3 %) of the 120 patients had a history of injury limited to the oral and maxillofacial region. All of these patients were older than 40 years, and 5 o the 10 patients were older than 70 years and had sustained minor injury.
In conclusion, middle-aged and elderly patients should be carefully followed up for CSDH, even if injury to the oral and maxillofacial region is minor.View full abstractDownload PDF (2560K) -
Takayuki IKEDA, Kazuhiko TANIO, Itaru KURATATE, Satoshi KANOU2005 Volume 51 Issue 9 Pages 466-469
Published: September 20, 2005
Released on J-STAGE: April 22, 2011
JOURNAL FREE ACCESSForeign bodies in the oral and maxillofacial region are frequently caused by trauma. We describe a 7-cm-long, glass foreign body lodged in the left buccal region of a 2-year-old girl, who visited our clinic 3 months after injury. At presentation she had a granulomatous tumor at the left angle of the mouth and a glass-like radiopaque object was discovered on a dental X-ray film. We removed the object through an extraoral approach.View full abstractDownload PDF (2419K) -
Takeshi WAKITA, Kenichi KURITA, Kensuke NAKATSUKA, Hiroaki MATSUURA, M ...2005 Volume 51 Issue 9 Pages 470-473
Published: September 20, 2005
Released on J-STAGE: April 22, 2011
JOURNAL FREE ACCESSWe report a case of mouth-closing disturbance caused by yawning.
A 29-year-old man suddenly noticed mouth-closing disturbance and pain in the left temporomandibular joint after yawning. Magnetic resonance imaging (MRI) showed that the relation between the condyle and the disk was normal, but these structures were anteriorly displaced when the mouth was closed. An unsuccessful attempt was made to reduce the displaced condyle by manipulation. Then, the mandible was retracted elastically. The patient noticed that his occlusion was reduced the following morning. MRI showed anterior disk displacement without reduction, with enlargement of the posterior part of the disk. Therefore, we concluded that the mouthclosing disturbance was caused when the anteriorly displaced disk was reduced on yawning, and backward movement of the condyle was restricted by the deformed posterior part of the disk on closing the mouth.View full abstractDownload PDF (3137K) -
Evaluation of bone formation in the mandibular defect by computed tomographyYuichiro SAWA, Akira TAKIMOTO, Go ARAI, Yoshiko OMURA, Dai KAWANO, Asu ...2005 Volume 51 Issue 9 Pages 474-477
Published: September 20, 2005
Released on J-STAGE: April 22, 2011
JOURNAL FREE ACCESSThis report describes the technique for and clinical outcome of removal of a lesion from the posterior region of the mandible. Removal of an intramaxillary lesion requires resection of the surrounding cortical bone. We describe how a block of cortical bone was completely resected by corticotomy. After surgery, the block bone was returned to the cavity. We used this technique in 11 patients who underwent radicular cystectomy with root resection, radicular cystectomy, removal of odontoma, and extraction of residual roots. Focal infection did not develop in any patient. There was also no evidence of resorption of replaced bone fragments in seven patients examined by 3-dimensional computed tomography. We conclude that temporarily removed buccal cortical bone could be replaced in its original site and was useful for the removal of lesions from the posterior part of the mandible.View full abstractDownload PDF (2478K)
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