Bulletin of Tokyo Dental College最新文献_第9页

Cyclic AMP-dependent protein kinase-independent angiotensin II-induced inhibition of calcium current in hamster submandibular ganglion neurons. 环amp依赖蛋白激酶不依赖血管紧张素ii诱导的鼠下颌下神经节神经元钙电流的抑制。

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Bulletin of Tokyo Dental College Pub Date : 2002-05-01 DOI: 10.2209/TDCPUBLICATION.43.95

T. Endoh, M. Abe, Takashi Suzuki

引用次数: 0

Measurement of lateral loads exerted on the maxillofacial region by habitual postures. 习惯体位对颌面侧负荷的测量。

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Bulletin of Tokyo Dental College Pub Date : 2002-05-01 DOI: 10.2209/TDCPUBLICATION.43.69

M. Suzaki, Miwako Naruse, Nobuko Watanabe, H. Yamaguchi

引用次数: 3

Correlation between facial patterns and function of the masticatory muscles in girls and women. 女孩和妇女面部特征与咀嚼肌功能的关系。

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Bulletin of Tokyo Dental College Pub Date : 2002-05-01 DOI: 10.2209/TDCPUBLICATION.43.51

K. Nakakawaji, K. Kodachi, T. Sakamoto, M. Harazaki, Y. Isshiki

{"title":"Correlation between facial patterns and function of the masticatory muscles in girls and women.","authors":"K. Nakakawaji, K. Kodachi, T. Sakamoto, M. Harazaki, Y. Isshiki","doi":"10.2209/TDCPUBLICATION.43.51","DOIUrl":"https://doi.org/10.2209/TDCPUBLICATION.43.51","url":null,"abstract":"The relationship between maxillo-facial patterns and function of the masticatory muscles was evaluated using electromyography, in 16 women with functional normal occlusion and 16 girls with chronological normal occlusion half of them had the dolico facial pattern and the others had the brachyo facial pattern by Ricketts analysis. For the electromyography, loads of 1, 2, 3, 4, and 5 kg were applied to the mandible, and muscular activity waves were obtained from the masseter muscle and the anterior belly of the temporal muscle during isometric contraction by surface electrode induction. The median frequency value (MFV) in a frequency curve obtained by high-speed Fourier transform of the electromyographic waves was set to the evaluation index. The MFV at each applied load was higher in the adult brachyo facial pattern group than in the adult dolico facial pattern group in both the masseter and temporal muscles, whereas the differences in the MFV were slight in the child group at a 5% significance level. The child group showed approximately half the incidence of significant correlation coefficients in comparison with the adult group and a large standard deviation without marked differences in the facial patterns due to their individual differences in growth with a 5% significant level. The adult brachyo facial pattern group showed a high regression coefficient of the MFV in the masseter muscle according to the increase in the amount of the applied load. Although differences in the cooperative contraction patterns similar to those in the adult group were observed in both the child dolico and brachyo facial pattern groups, no marked significant differences were observed in the child group, who had large individual differences due to their immature growth.","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":"43 2 1","pages":"51-9"},"PeriodicalIF":0.5,"publicationDate":"2002-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2209/TDCPUBLICATION.43.51","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68186603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Lip seal study of Japanese adults with malocclusion. 日本成人错颌畸形的唇印研究。

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Bulletin of Tokyo Dental College Pub Date : 2002-05-01 DOI: 10.2209/TDCPUBLICATION.43.89

K. Ueda, E. Motegi, R. Yata, T. Torikai, M. Harasaki, H. Yamaguchi

引用次数: 11

Comparisons of physical imaging properties among three kinds of imaging plates used in photostimulable phosphor systems for dental radiography. 牙科放射照相光刺激磷光体系统中三种成像板物理成像特性的比较。

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Bulletin of Tokyo Dental College Pub Date : 2002-02-01 DOI: 10.2209/TDCPUBLICATION.43.23

K. Nishikawa, T. Ooguro, K. Kuroyanagi

{"title":"Comparisons of physical imaging properties among three kinds of imaging plates used in photostimulable phosphor systems for dental radiography.","authors":"K. Nishikawa, T. Ooguro, K. Kuroyanagi","doi":"10.2209/TDCPUBLICATION.43.23","DOIUrl":"https://doi.org/10.2209/TDCPUBLICATION.43.23","url":null,"abstract":"The purpose of this study was to compare the physical imaging properties of three kinds of imaging plates (IPs) used with two photostimulable phosphor systems for dental radiography: HR-V, used with the Digora, BAS-SR, and ST-V, used with the DenOptix for intraoral radiography and panoramic radiography, respectively. Sensitivity to X-ray, gradient, modulation transfer function (MTF), noise power spectrum (NPS), noise-equivalent quanta (NEQ), and detective quantum efficiency (DQE) were compared. All imaging plates were read using the DenOptix scanner with inactive automatic range control (ARC). The scanning resolution was set at 300 dpi. Decay of image information by room light was also compared at inactive and active ARC settings. BAS-SR showed the lowest sensitivity, the lowest gradient, the highest MTF, and the highest NPS. ST-V showed the highest sensitivity, the highest gradient, the lowest MTF, and the lowest NPS. HR-V was the second best for all imaging properties examined in this study. NEQ and DQE of BAS-SR were lowest, and those of ST-V were highest at low spatial frequencies. However, BAS-SR showed relatively constant NEQ and DQE while those of ST-V decreased remarkably at high spatial frequencies. NEQ and DQE of HR-V were the second best at low spatial frequencies and the best at high spatial frequencies. Therefore, we concluded that HR-V has the best imaging properties for dental radiography among three kinds of IPs evaluated in this study. However, the light decay speed of image information with HR-V was remarkably faster than with BAS-SR. To adopt HR-V for a system with which IPs are treated in an ordinary room, the light decay should be taken into account.","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":"43 1 1","pages":"23-30"},"PeriodicalIF":0.5,"publicationDate":"2002-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2209/TDCPUBLICATION.43.23","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68186553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Sac I Restriction Fragment Length Polymorphism (RFLP) related to the human CST2 gene. 与人类CST2基因相关的Sac I限制性片段长度多态性(RFLP)。

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Bulletin of Tokyo Dental College Pub Date : 2002-02-01 DOI: 10.2209/TDCPUBLICATION.43.41

K. Minaguchi, T. Kiriyama, E. Saitoh, S. Isemura, K. Sanada

引用次数: 0

SEM observations of resected root canal ends following apicoectomy. 根尖切除术后根管末端的扫描电镜观察。

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Bulletin of Tokyo Dental College Pub Date : 2002-02-01 DOI: 10.2209/TDCPUBLICATION.43.7

M. Furusawa, Y. Asai

{"title":"SEM observations of resected root canal ends following apicoectomy.","authors":"M. Furusawa, Y. Asai","doi":"10.2209/TDCPUBLICATION.43.7","DOIUrl":"https://doi.org/10.2209/TDCPUBLICATION.43.7","url":null,"abstract":"The purpose of this study was to examine the apical foramen of root apices extracted during apicotomies. A total of 25 teeth extracted from 25 patients admitted to the Department of Conservative Dentistry at Tokyo Dental College's Chiba Hospital were used for the study. All patients were between 22 to 56 years of age at the time of the study, and each of the 25 cases was determined clinically on radiographs to be chronic apical suppurative periodontitis. Microsurgery was performed on all cases, and the extracted root apices were then observed using SEM. The results demonstrated a wide opening, greater than 350 microns as measured along the major axis, of the apical foramen in 80% of the cases. Various characteristics indicative of resorption were observed around the apical foramen. These features included those believed to have been caused by overinstrumentation during root canal treatment as well as irregularly shaped areas presumed to be apical lesions that had enlarged and eroded. We observed a high frequency of manifestations of cementum resorption surrounding the root apices of teeth with apical lesions. Furthermore, we concluded that in the majority of cases in the present study, due to the fact that the apical foramen exceeded normal opening dimensions as a result of overinstrumentation during root canal treatment or resorption around the root apex, prolongation of the lesions had occurred in response to direct contact of microbial infectious matter and tissues surrounding the root apex over a large area. The above finding suggested that, in cases in which the apical foramen is destroyed through overinstrumentation larger than #35 or in which the apical foramen opens up to dimensions greater than 350 microns due to pathologic resorption, surgical intervention may be indicated. On the other hand, in 64% of the cases, an accessory canal was observed in the root apical lesion. Based on this observation, the presence of an accessory canal in the root apex may contribute to some degree to the prolongation of the lesion.","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":"62 1","pages":"7-12"},"PeriodicalIF":0.5,"publicationDate":"2002-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2209/TDCPUBLICATION.43.7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68187174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

Broadband ultrasonic attenuation of children and young adults in Japan. 日本儿童和年轻人的宽带超声衰减。

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Bulletin of Tokyo Dental College Pub Date : 2002-02-01 DOI: 10.2209/TDCPUBLICATION.43.1

Utako Soejima, E. Motegi, Mio Sasaki, M. Nomura, Yukio Kaneko, Takako Shimizu, F. Takeuchi, Takao Yamaguchi, T. Ebihara, Daisuke Yamaguchi, T. Torikai, T. Saito, H. Yamaguchi

{"title":"Broadband ultrasonic attenuation of children and young adults in Japan.","authors":"Utako Soejima, E. Motegi, Mio Sasaki, M. Nomura, Yukio Kaneko, Takako Shimizu, F. Takeuchi, Takao Yamaguchi, T. Ebihara, Daisuke Yamaguchi, T. Torikai, T. Saito, H. Yamaguchi","doi":"10.2209/TDCPUBLICATION.43.1","DOIUrl":"https://doi.org/10.2209/TDCPUBLICATION.43.1","url":null,"abstract":"The purpose of this study was to establish broadband ultrasonic attenuation (BUA: dB/MHz) as bone mineral density (BMD) norms for healthy young Japanese and to evaluate the standard values for an ultrasonic bone analyzer (Cuba Clinical, McCue Ultrasonics Ltd., Winchester, England), which facilitates BMD measurement without exposure to radiation. The subjects were 472 healthy young individuals with no endocrine or skeletal disorders, 197 males (mean age 16 y 5 m) and 275 females (mean age 15 y 7 m) aged from 5 to 29 years. BUA was measured at the left calcaneus. The subjects were divided into five age-stratified different age groups of five years intervals. The mean BUA values (dB/MHz) obtained were 40.6, 60.9, 78.0, 90.4 and 86.0 for males, and 41.9, 61.0, 73.4, 68.4 and 70.8 for females in the 5-9, 10-14, 15-19, 20-24 and 25-29 age groups, respectively. A significant positive correlation was observed between BUA and age in both males and females except in the male 25-29 age group and the female 20-24 and 25-29 age groups. A significantly different BUA between males and females was found in the 20-24 and 25-29 age groups (p < 0.001). The BUA values obtained in this study may serve as BMD norms for children and young adults. It might be thought that measuring BUA from childhood through early adulthood made it possible to determine peak values and peak periods of BMD, providing useful information for assessment of growth and development.","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":"43 1 1","pages":"1-5"},"PeriodicalIF":0.5,"publicationDate":"2002-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68186489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Cytokeratins expression of constituting cells in ameloblastoma. 成釉细胞瘤中细胞角蛋白的表达。

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Bulletin of Tokyo Dental College Pub Date : 2002-02-01 DOI: 10.2209/TDCPUBLICATION.43.13

K. Fukumashi, Y. Enokiya, Takashi Inoue

引用次数: 25

Effect of rinsing with phosphorylated chitosan on four-day plaque regrowth. 磷酸化壳聚糖漂洗对牙菌斑再生的影响。

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Bulletin of Tokyo Dental College Pub Date : 2001-11-01 DOI: 10.2209/TDCPUBLICATION.42.251

H. Sano, K. Shibasaki, T. Matsukubo, Y. Takaesu

{"title":"Effect of rinsing with phosphorylated chitosan on four-day plaque regrowth.","authors":"H. Sano, K. Shibasaki, T. Matsukubo, Y. Takaesu","doi":"10.2209/TDCPUBLICATION.42.251","DOIUrl":"https://doi.org/10.2209/TDCPUBLICATION.42.251","url":null,"abstract":"This clinical investigation examined the effect of phosphorylated chitosan rinsing on plaque development and on the buffering capacity of plaque suspension. Three male adult subjects participated in the trial that was designed as a single blind study. Participants refrained from mechanical oral hygiene procedures during a four-day study and rinsed three times a day with 20 ml of test solutions. A wash-out period of three days was instituted between the placebo and phosphorylated chitosan rinsing period. Clinical evaluation and plaque sampling were performed at the end of each test period. We disclosed plaque accumulations on the buccal upper front teeth with a two-tone disclosing agent to distinguish between newly formed plaque and old plaque. After taking color slides, we then used a computerized image analysis. Tooth areas covered by plaque on the color slides were digitized and expressed as percentages of the tooth area. The buffering capacity of the collected plaque fluid was determined by using a beta-titrator. A mouth rinse containing 0.5% phosphorylated chitosan significantly reduced both newly formed plaque areas (red disclosed; p < 0.001) and old plaque areas (blue disclosed; p < 0.01) compared to a placebo rinsing. However there was no significant difference in the plaque buffering capacity (p > 0.05) between the mouth rinse containing 0.5% phosphorylated chitosan and placebo. These findings might suggest that mouth rinse containing phosphorylated chitosan would be effective in reducing plaque formation and have a slight ability to enhance plaque buffering capacity.","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":"42 4 1","pages":"251-6"},"PeriodicalIF":0.5,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2209/TDCPUBLICATION.42.251","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68186528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16