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Volume 105, Issue 10
Displaying 1-6 of 6 articles from this issue
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[in Japanese]2002 Volume 105 Issue 10 Pages 1059-1064
Published: October 20, 2002
Released on J-STAGE: March 19, 2008
JOURNAL FREE ACCESS -
Suetaka Nishiike, Yoshiharu Sakata, Takashi Kato, Miki Nagai, Masaki K ...2002 Volume 105 Issue 10 Pages 1065-1070
Published: October 20, 2002
Released on J-STAGE: March 19, 2008
JOURNAL FREE ACCESSWe present 35 cases of mandibular fracture treated at the Suita Municipal Hospital between 1994 and 2002. Results showed a male predominance by 2 to 1 and the highest occurrence of trauma in the 20-29 year age group (31%). Major causes of fractures were traffic accidents (52%), assaults (31%), and falls (17%). The most common fracture sites were, in descending order, the condyle (33%), parasymphysis (25%), angle (22%), body (10%), and ramus (10%). The cause of fractures in patients less than 30 years old is most likely due to traffic accidents and assaults, while that in patients over 30 years old is due to falls. Traffic accidents and falls significantly induce condylar fractures, while assaults significantly induce other fractures.
Patients were treated with open reduction with titanium or biodegradable miniplates and screws (n=30), maxillomandibular fixation alone (n=2), conservative therapy (n=1), or treatment at other hospitals (n=2). The mean period for maxillomandibular fixation was 42 days. In 22 patients with more than 6 months of follow-up, 6 had complications: 4 had pain, 1 had deviation in mouth opening, 1 suffered from noise, and 1 from facial palsy. Patients with condylar fractures had a significantly high incidence of complications.
We think that we should further decrease the period for maxillomandibular fixation, increase the application of biodegradable materials, and use methods for condylar fractures more appropriately.View full abstractDownload PDF (1436K) -
Hiromi Ueda2002 Volume 105 Issue 10 Pages 1071-1077
Published: October 20, 2002
Released on J-STAGE: March 19, 2008
JOURNAL FREE ACCESSIn a retrospective study, hearing results before and after stapedectomy were compared with those of individuals not undergoing surgery. Subjects were 51 patients who were surgically diagnosed as having otosclerosis and who could be followed up for more than 5 years. Of these, 31 contralateral ears surgically diagnosed as otosclerotic did not undergo surgery (nonsurgery group). Nineteen ears underwent stapedectomy using a wire loop prosthesis (TS group). Thirtyeight ears underwent stapedotomy using a wire piston prosthesis (SFS group). In the nonsurgery ear group, the last air conduction threshold deteriorated equally at all frequencies. Deterioration of the high frequency air conduction threshold seemed to cause deterioration of the bone conduction threshold. Deterioration of the last air conduction threshold in the SFS group was somewhat less than that in the TS group, although not significantly. In patients up to 50 years old, the air conduction loss/year in the SFS group was significantly less than that in the nonsurgery ear group at 0.25kHz and 0.5kHz. The bone conduction loss/year in the SFS group was less than that in both the TS group and nonsurgery ear group at 1kHz. No significant differences was seen in either air or bone conduction loss/year among the 3 groups in patients 51 years or older. We concluded that stapedotomy and wire piston prosthesis are the surgical techniques of choice in the treatment of otosclerosis.View full abstractDownload PDF (1455K) -
Takemitsu Hama, Makoto Miyazaki, Kenji Dejima, Yasuo Hisa, Shigeharu F ...2002 Volume 105 Issue 10 Pages 1078-1086
Published: October 20, 2002
Released on J-STAGE: March 19, 2008
JOURNAL FREE ACCESSTo clarify paranasal sinus change in patients with Japanese cedar pollinosis, we studied reactions to medical treatment via X-ray images of patients during the 2000 cedar pollen season.
Medication was administered to 577 patients consulting facilities in 3 regions-Kyoto, Fukui and Osaka-having different pollen counts i.e., 4555/cm2 in Fukui, 801/cm2 in Kyoto and 531/cm2 in Osaka. The paranasal sinus was X-rayed by Water's method, and the degree of positivity was classified by Katagiri'shadow classification. Patients were grouped into 334 suffering extensive Fukui pollen dispersion and 243 suffering relatively limited Kyoto and Osaka pollen dispersion.
At 3-4 weeks after pollen dispersion, contrast shadow positivity was 22.2%, with no difference before pollen dispersion (22.2%) in Kyoto and Osaka. In Fukui, positivity was 39.7%, a clear increase over pre pollen dispersion (19.2%). In the initial treatment group, positivity was 25.8% in Fukui and 28.6% in Kyoto and Osaka.
Our results suggest that the incidence of sinusitis in patients with Japanese cedar pollinosis tended to increase with exposure to extensive pollen dispersion and to be suppressed by initial treatment.View full abstractDownload PDF (816K) -
Atsuto Enami, Kouiciro Tsutsumi, Takehiko Kobayashi, Eriko Shibosawa, ...2002 Volume 105 Issue 10 Pages 1087-1092
Published: October 20, 2002
Released on J-STAGE: March 19, 2008
JOURNAL FREE ACCESSWe determined whether resistance to Fas-mediated apoptosis is involved in the development of undifferentiated nasopharyngeal carcinomas (UNPCs). In UNPC tissue sections from 20 cases, we conducted immunohistochemistry to detect Fas and FasL, in situ hybridization to detect Epstein-Barr virus-encoded small RNA (EBER), and immunohistochemistry for single-stranded DNA (ssDNA) to detect apoptotic cells. Fas was detected in 17/20(85%), FasL in 15/20(75%), and EBER in 16/20(80%). Fas was detected in all 16 EBER-positive UNPCs, but not in 3(75%) of 4 EBER-negative UNPCs. FasL was detected in 12(75%) of 16 EBER-positive UNPCs and 3(75%) of 4 EBER-negative UNPCs. Interestingly, despite Fas and FasL co-expression in UNPC cells (Fas+/FasL+cases=13/20 or 65%), apoptotic UNPC cells were significantly lower in Fas+/FasL+ than in other cases. These results suggest that Fas+/FasL+UNPC cells are resistant to Fas-mediated apoptosis in vivo by mechanisms excluding lack of Fas expression.View full abstractDownload PDF (2267K) -
Kengo Nishimoto, Mituaki Iwamoto, Atuko Karaki, Yasuhiro Nishi, Yasuhi ...2002 Volume 105 Issue 10 Pages 1093-1096
Published: October 20, 2002
Released on J-STAGE: March 19, 2008
JOURNAL FREE ACCESSA 59-year-old woman with large hard palate cancer underwent surgical resection. We constructed a maxillary prosthesis to be connected to the patient's mandibular denture. Bilateral maxillectomy resulted in total loss of the hard palate and bilateral alveolar and partial loss of the soft palate. A obturator prosthesis was prepared beforehand to fit the surgical cavity. The patient recovered functional speech and swallowing at a relatively early stage, achieving satisfactory cosmetic results.View full abstractDownload PDF (1726K)
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