Japanese Journal of Oral and Maxillofacial Surgery
Online ISSN : 2186-1579
Print ISSN : 0021-5163
ISSN-L : 0021-5163
Volume 48, Issue 9
Displaying 1-8 of 8 articles from this issue
  • Akishige HOKUGO, Yoshinobu KUBO, Kaoru HORIUCHI, Rikiya SHIRASU
    2002 Volume 48 Issue 9 Pages 439-445
    Published: September 20, 2002
    Released on J-STAGE: April 22, 2011
    JOURNAL FREE ACCESS
    Autogenous bone remains the most suitable material for bone grafts used to repair oral and maxillof acial bone defects. However, there are restrictions on the use of autogenous bone grafts at donor sites. In a previous study, we produced a prefabricated bone graft with the use of autologous vessels and auto-cancellous bone. In this study, we examined the usefulness of distraction osteogenesis for increasing bone associated with prefabricated bone grafts.
    We placed ectopic bone grafts in the limbs of rats and fixed an originally designed distraction device to the ectopic bone after 9 weeks. Distraction was started 3 days after the second operation. After 1, 2, 3, and 6 weeks of distraction, radiographic and histological analyses were performed to observe osteogenesis. As control, undistracted ectopic bones in rats of the same age were similarly studied.
    Our results show that distraction osteogenesis is useful for quantitatively increasing bone associated with grafts.
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  • Kazuhiro MURAKAMI, Kazuhiko YAMAMOTO, Tsutomu SUGIURA, Wataru TAKIOKA, ...
    2002 Volume 48 Issue 9 Pages 446-454
    Published: September 20, 2002
    Released on J-STAGE: April 22, 2011
    JOURNAL FREE ACCESS
    Changes in ramus height and mandibular movement and function were evaluated in patients with unilateral condylar process fractures who received conservative treatment.
    Forty-five patients (27 men, 18 women) with a mean age of 36.3 years (range, 16-78 years) were studied. The changes in ramus height as compared with that at the time of injury were analyzed 3 months and 6 months after injury according to the level (Lindahl's classification) and type (MacLennan's classification) of fracture. Assessment of mandibular movement and function included maximum mouth opening, lateral mandibular movement, and deviation on mouth opening, evaluated at each state. The statistical analysis of the data was performed by one-way ANOVA and unpaired t-tests. Occlusion and TMJ disorders were also evaluated at each stage.
    Shortening of ramus height was remarkable in the fractures of the neck and with displacement and dislocation as compared with other levels and types of fractures. Maximum mouth opening of more than 40 mm was obtained in all levels and types of fractures 3 and 6 months after injury. Lateral mandibular movement towards the non-fracture side was slightly restricted 3 months after injury, but recovered at 6 months. There were no significant differences according to level or type of fractures at this time. Deviation on mouth opening was associated with fractures of the neck and those with displacement and dislocation. All patients had good occlusion, and only a few had TMJ disorders.
    Conservative treatment for unilateral condylar process fractures resulted in the shortening of ramus height, especially in fractures of the neck and those with displacement and dislocation. However, mandibular movement and function were satisfactory, without restriction of maximum mouth opening or lateral mandibular movement and only with deviation on mouth opening.
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  • Masamichi KOMIYA, Hitoshi NISHIMURA, Yoshiaki AKIMOTO, Tadahiko UTSUNO ...
    2002 Volume 48 Issue 9 Pages 455-458
    Published: September 20, 2002
    Released on J-STAGE: April 22, 2011
    JOURNAL FREE ACCESS
    Papillary cystadenocarcinoma is an uncommon neoplasm of salivary gland origin that rarely occurs in the major salivary glands. This report describes a rare case of papillary cystadenocarcinoma of submandibular gland origin that was diagnosed on a fine needle aspiration biopsy. A 73-year-old woman was referred to us because of a painless swelling of the submandibular gland. A fine needle aspiration biopsy revealed a malignant tumor of the salivary gland. The submandibular gland containing the tumor was dissected free, together with three associated lymph nodes. The histological diagnosis was papillary cystadenocarcinoma. The postoperative course was uneventful.
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  • Eriko OKADA, Yoshikazu KAMINO, Hiroyuki OKADA, Noriko SAITO, Hirotsugu ...
    2002 Volume 48 Issue 9 Pages 459-462
    Published: September 20, 2002
    Released on J-STAGE: April 22, 2011
    JOURNAL FREE ACCESS
    Castleman's disease, also known as angiofollicular hyperplasia or giant lymph node hyperplasia, usually occurs in the mediastinum and relatively rarely occurs in the head and neck region. Recently, we encountered a case of Castleman's disease occurring in the left side of the neck in a 30-year-old woman. Histopathologically, the tumor was diagnosed as Castleman's disease, hyaline-vascular type. The prognosis was fairly good after surgical treatment, and there is no recurrence at present. We describe this case with some comments based on the literature.
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  • Makoto HOSHINO, Tomohiro ANDO, Kanako NAKAMURA, Yasubumi MARUOKA, Nobo ...
    2002 Volume 48 Issue 9 Pages 463-466
    Published: September 20, 2002
    Released on J-STAGE: April 22, 2011
    JOURNAL FREE ACCESS
    Angiokeratoma is a rare cutaneous vascular disorder of the papillary dermis with hyperkeratosis of the epidermis, generally occurring at multiple sites. Although solitary cutaneous forms have been reported, a solitary pattern occurring in the oral cavity is extremely rare. We report the case of a 40-year-old man with a 5 -mm, dark red, localized raised lesion of the tongue. The resected specimen exhibited the pathological characteristics of a typical angiokeratoma. Examinations for VIII factor-relating antigen, CD31, and CD34 revealed negative reactions at the dilated vessels. We review the independent occurrence of angiokeratomas in the oral cavity and discuss the clinical and histological features of this unusual lesion.
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  • Sanae WATATANI, Tomoaki EGUCHI, Hisako HIKIJI, Takafumi SUSAMI, Tsuyos ...
    2002 Volume 48 Issue 9 Pages 467-470
    Published: September 20, 2002
    Released on J-STAGE: April 22, 2011
    JOURNAL FREE ACCESS
    Congenital maxillomandibular fusion (syngnathia) is a rare anomaly associated with soft tissue (synechia) or bony adhesions (synostosis).
    We describe a girl with synechia who had two mucosal bands between the margins of the cleft palate and the floor of the mouth. We separated the bands surgically at the age of 2 months. Subsequently, some respiratory problems remained. We performed anterior traction of the tongue with a tongue-lip adhesion procedure. Her respiration improved. Seven months after the tongue-lip adhesion procedure, the adhesion was released. At the age of 18 months, the cleft palate was repaired by a push-back method. We describe our treatment and review the literature concerning the origin of the mucosal bands.
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  • Kousuke OHKI, Kouji YAMAGUCHI, Hiroyuki KUMAMOTO, Kazuhisa SASAKI, Tak ...
    2002 Volume 48 Issue 9 Pages 471-474
    Published: September 20, 2002
    Released on J-STAGE: April 22, 2011
    JOURNAL FREE ACCESS
    Gingival cyst of adults (GCA) is a relatively uncommon developmental odontogenic cyst that occurs in the attached gingiva and alveolar mucosa. This report describes a case of GCA associated with a xanthogranulomatous lesion. The patient was a 78-year-old man, who presented with gingival swelling of the left maxillary incisor-canine region. Intraoral examination showed a painless, well-circumscribed, dome-shaped swelling, approximately 5cm in diameter and fluctuant. There were no noteworthy features on radiographic examination. The lesion was clinically diagnosed as a benign gingival tumor and was confirmed to be a cystic lesion on operation. It was surgically marsupialized under local anesthesia. Healing was uneventful, with no evidence of recurrence at 1.5 year follow-up evaluation. Histopathologically, the lesion was unicystic and lined by thin nonkeratinized stratified squamous epithelium without rete ridges. An xanthogranulomatous lesion containing numerous cholesterin clefts and foam cells was found in a part of the cyst wall and may have caused the extensive growth of the GCA.
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  • Kitaro ONOZAWA, Hiroyuki KANEKO, Keiko NAKAZATO, Tatsuo YAMAGUCHI, Yuu ...
    2002 Volume 48 Issue 9 Pages 475-478
    Published: September 20, 2002
    Released on J-STAGE: April 22, 2011
    JOURNAL FREE ACCESS
    Heart transplantation has substantially increased since cyclosporin became clinically available as an immunosuppressive drug in the 1980's, and the recent survival rate after heart transplantation has increased.
    The major complication after heart transplantation is infection associated with the side effects of immunosuppressive therapy. Because we can prevent infection originating from oral lesions, evaluation of patients' oral health and removal of any potential source of infection is important both before and after heart transplantation.
    We studied 15 patients after heart transplantation for whom dental examinations and treatment were requested by the Department of Internal Medicine of our hospital. Twelve decayed teeth were found in 3 patients, 52 teeth with marginal periodontitis in 4, 2 teeth with apical periodontitis in 2, 147 teeth with gingival enlargement in 9, mobility of a deciduous tooth in 1, 1 tooth with hypodontia in 1, and 1 fused tooth in 1. All patients received an explanation on tooth brushing. Eight teeth were extracted in one patient during the period before and after heart transplantation. Dental calculi were removed from 22 teeth in 2 patients.
    We report the details of these oral lesions and discuss the appropriate period for dental procedures and optimal antibiotic treatment.
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