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Volume 63 (1996)
- Issue 4 Pages 539-
- Issue 3 Pages 441-
- Issue 2 Pages 281-
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Volume 63, Issue 3
Displaying 1-13 of 13 articles from this issue
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Shogoro Okada1996 Volume 63 Issue 3 Pages 441-447
Published: September 30, 1996
Released on J-STAGE: October 08, 2010
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Hiroshi Ono1996 Volume 63 Issue 3 Pages 448-458
Published: September 30, 1996
Released on J-STAGE: October 08, 2010
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Examination on Tooth Conditions Using Panoramic X-ray FilmsTakafumi Susami, Hisako Yano, Momoko Takakura, Takahide Komori, Yoshiy ...1996 Volume 63 Issue 3 Pages 459-467
Published: September 30, 1996
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSAs an aid in instructions oral health care to university students, tooth conditions were examined using panoramic X-ray films. The materials were taken from 129 students of the University of Tokyo. The average age was 22 years 5 months.
The results were as follows:
1. Lack of tooth was frequently found to be both maxillary and mandibular third molars. It was also occasionally found to be maxillary first premolars, mandibular lateral incisors, and mandibular second premolars. The average value for lack of tooth per individual was 0.9.
2. Root canal fillings were often found in mandibular first molars, maxillary central incisors, mandibular second molars and maxillary second premolars. The average value was 1.1.
3. Metal restorations were often made in first and second molars, especially in mandibular. The average value was 6.2.
4. As for maxillary third molar axis, the majority showed normal direction. In mandible, however, the normal direction was only found in 37.7% and the others showed troublesome axes. It seemed that careful attention should be given to the mandibular third molar conditions.View full abstractDownload PDF (986K) -
Shigeru Oda, Atsuhiro Kinoshita, Tatsuhiro Higuchi, Toshio Shizuya, Is ...1996 Volume 63 Issue 3 Pages 468-477
Published: September 30, 1996
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSThe purpose of this study was to investigate the efficacy of BCP granules combined with rhBMP-2 for ectopic bone formation in rats. BCP granules were used as a carrier for rhBMP-2. The rhBMP-2 was adsorbed to BCP granules under the reduction of pressure. Twenty Wistar rats were used for this experiment and were divided into 4 groups according to the concentration (0, 2, 10, 50μg/700μl) of rhBMP-2implanted in each rat. The BMP and BCP complex was implant ed under the dorsal skin of the rats. Three weeks after the implantation, the rats were sacrificed. The experimental sites were immediately dissected and histological sections were prepared. In the 50μg group, new bone formation was observed in all rats, while bone tissue was not found in the 2μg and 0μg groups.
These results indicated that BCP combined with rhBMP-2 could effectively induce ectopic bone formation. It was suggested that BCP granules alone could be applicable as a carrier for rhBMP-2 in order to induce new bone formation.View full abstractDownload PDF (6603K) -
Takahide Komori, Youko Matsumoto, Keiko Yokoyama, Koukichi Matsumoto, ...1996 Volume 63 Issue 3 Pages 478-481
Published: September 30, 1996
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSThe positive rate of infectious diseases (syphilis, hepatitis B and C) in in-patients at the department of oral surgery was investigated for five years.
Each positive rate of them was 2.4% for STS, (1.3% for TPHA), 0.6% for HBS antigen, 3.2% for HCV antibody, respectively.
These results suggest that it is important to perform universal precaution in the treatment room.View full abstractDownload PDF (385K) -
Kazuko Yano, Nobuhiro Takamatsu, Tao He, Makoto Umeda, Isao Ishikawa1996 Volume 63 Issue 3 Pages 482-488
Published: September 30, 1996
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSThe purpose of this investigation was to evaluate the potential of application of non-radioactive DNA probe method (Affirm DP (R) ) in clinical diagnosis and evaluation of treatment efficacy. Sensitivity and specificity of two different cut-off levels (104, 5×105) of the method with bacterial culture in detection ofBacteroides forsythus, Porphyromonas gingivalis, and Actinobacillus actinomycetemcomitanswere compared.
Those bacteria were obtained from bacterial cultures and clinical samples from healthy subjects and patients with periodontal disease. The results showed that detection percentage of DNA probe method with 104 cut-off was equal to or higher than the culture method forBacteroides forsythusandPorphyromonas gingivalisdetection.
Therefore, it is suggested to be a useful chairside DNA probe kit as an aid in clinical diagnosis and evaluation of treatment efficacy.View full abstractDownload PDF (2745K) -
Yan-Jiang Li1996 Volume 63 Issue 3 Pages 489-515
Published: September 30, 1996
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSThe purpose of this study was to investigate the function of human cementum from a morphological viewpoint. To accomplish this purpose, the incremental lines in human acellular cementum were studied by light microscopy, microradiogram (CMR), scanning electron microscopy, and transmission electron microscopy, and the results were as follows:
1. In acellular cementum, many fine incremental lines of about 0.5μm width were observed.
2. The fine incremental lines were observed running perpendicularly or obliquely to Sharpey's fibers in the acellular cementum.
3. The fine incremental lines observed in acellular cementum were not straight lines but had wave like structure.
4. Each wave observed in the fine incremental lines corresponded to a bundle of Sharpey's fibers.
5. The fine incremental lines observed on Sharpey's fibers in acellular cementum showed specific characteristic features.
6. Despite the fine incremental lines showing a close relationship to the degree of calcification, they also seemed to show a strong relationship to the quality of the organic component of the acellular cementum.
7. Apart from the fine incremental lines which are specific to acellular cementum, incremental lines similar to those observed in cellular cementum were also observed within the acellular cementum. These incremental lines were wider and their degree of calcification was higher.View full abstractDownload PDF (24144K) -
Takahide Komori, Keiko Yokoyama, Youko Matsumoto, Koukichi Matsumoto, ...1996 Volume 63 Issue 3 Pages 516-520
Published: September 30, 1996
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSRecently, the Er : YAG laser has attracted attention because of its possibility of cutting hard tissue with extremely small thermal injuries.
In this paper, eight cases (thirteen teeth) of apicoectomy using Er : YAG laser are reported. All procedures were performed without using air turbin or electric drill. The advantages of Er : YAG laser application include : absence of uncomfortable vibration ; less chance for contamination of the surgical site ; and reduced risk of trauma of adjacent tissue compared with ordinary methods.View full abstractDownload PDF (5577K) -
[in Japanese], [in Japanese]1996 Volume 63 Issue 3 Pages 521
Published: September 30, 1996
Released on J-STAGE: October 08, 2010
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[in Japanese], [in Japanese]1996 Volume 63 Issue 3 Pages 522
Published: September 30, 1996
Released on J-STAGE: October 08, 2010
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[in Japanese], [in Japanese], [in Japanese]1996 Volume 63 Issue 3 Pages 523
Published: September 30, 1996
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSDownload PDF (140K) -
[in Japanese], [in Japanese]1996 Volume 63 Issue 3 Pages 524
Published: September 30, 1996
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSDownload PDF (1799K) -
[in Japanese], [in Japanese], [in Japanese]1996 Volume 63 Issue 3 Pages 525
Published: September 30, 1996
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSDownload PDF (1764K)
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