The Journal of Nihon University School of Dentistry最新文献_第5页

Microstructure of etched "IPS Empress" heat-pressed ceramics observed by SEM. 蚀刻“IPS皇后”热压陶瓷的SEM观察。

The Journal of Nihon University School of Dentistry Pub Date : 1996-03-01 DOI: 10.2334/josnusd1959.38.31

H Nakamoto, H Sugisawa, K Kawahara, H Takada, M Kaneko, Y Nagamitsu, Y Kakehashi, T Sato, T Igarashi

{"title":"Microstructure of etched \"IPS Empress\" heat-pressed ceramics observed by SEM.","authors":"H Nakamoto, H Sugisawa, K Kawahara, H Takada, M Kaneko, Y Nagamitsu, Y Kakehashi, T Sato, T Igarashi","doi":"10.2334/josnusd1959.38.31","DOIUrl":"https://doi.org/10.2334/josnusd1959.38.31","url":null,"abstract":"A valuable characteristic of the \"IPS Empress\" used for producing all ceramic dental restorations is that it is a prefired ceramic ingot. The ingot is heated, softened and press-injected into the cavity, and ceramic restorations are fabricated by the lost wax casting method. The leucite crystal present in the ingot are scattered and distributed into the glassy phase in a more homogeneous manner through this pressing procedure, and the resulting ceramics are of higher flexural strength than conventional ones. The present study was carried out to clarify the microstructure of Empress ceramics by etching, and to observe the etched surface by scanning electron microscopy, in comparison with several other conventional ceramics. It was shown that the form and distribution of the leucite crystals in Empress ceramics are quite different before and after pressing, and that the staining and layering ceramics are also different from conventional ceramics. The method of surface treatment of ceramics prior to etching, such as fracturing or grinding, the kind of etching material used, the concentration and the etching time are important factors for revealing, observing and evaluating the microstructure of ceramics containing leucite crystals.","PeriodicalId":22638,"journal":{"name":"The Journal of Nihon University School of Dentistry","volume":"38 1","pages":"31-6"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2334/josnusd1959.38.31","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19625580","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

Clinical assessment of the pumping technique in treating TMJ arthrosis with closed lock. 闭锁泵入技术治疗TMJ关节病的临床评价。

The Journal of Nihon University School of Dentistry Pub Date : 1996-03-01 DOI: 10.2334/josnusd1959.38.1

M Ozawa, M Okaue, K Kaneko, M Hasegawa, S Matsunaga, M Matsumoto, M Hori, I Kudo, M Takagi

{"title":"Clinical assessment of the pumping technique in treating TMJ arthrosis with closed lock.","authors":"M Ozawa, M Okaue, K Kaneko, M Hasegawa, S Matsunaga, M Matsumoto, M Hori, I Kudo, M Takagi","doi":"10.2334/josnusd1959.38.1","DOIUrl":"https://doi.org/10.2334/josnusd1959.38.1","url":null,"abstract":"The treatment of closed jaw locking due to temporomandibular joint (TMJ) arthrosis is described. Conventional mandibular manipulation of the lower and/or upper joint compartments was performed using hydraulic pressure from an imaging X-ray medium. The procedure was used in 40 patients with closed locking (5 acute and 35 chronic). The results of the treatment are evaluated and factors affecting the results are examined. In four of the five patients with acute closed locking, the lock was successfully released after use of the pumping technique on the lower joint compartment. In patients with chronic locking, an average improvement of 6.6 mm in the degree of interincisal opening was observed within 3-4 days of treatment with the pumping technique. In 13 of these patients, satisfactory opening (at least 40 mm) was achieved immediately. All the patients underwent further forward and contralateral manipulation to assist mouth opening, and after a period of 2-3 months 16 patients showed a further average improvement of 5.4 mm in interincisal opening.","PeriodicalId":22638,"journal":{"name":"The Journal of Nihon University School of Dentistry","volume":"38 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2334/josnusd1959.38.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19625099","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: 0

Hydroxyproline and total protein levels in gingiva from patients treated with phenytoin and cyclosporine-A. 苯妥英和环孢素a治疗患者牙龈中羟脯氨酸和总蛋白水平的变化。

The Journal of Nihon University School of Dentistry Pub Date : 1996-03-01 DOI: 10.2334/josnusd1959.38.21

F A Akalin, F Y Bozkurt, D Sengün, N Renda, Z Kalfa, K Eratalay, E Velidedeoglu

{"title":"Hydroxyproline and total protein levels in gingiva from patients treated with phenytoin and cyclosporine-A.","authors":"F A Akalin, F Y Bozkurt, D Sengün, N Renda, Z Kalfa, K Eratalay, E Velidedeoglu","doi":"10.2334/josnusd1959.38.21","DOIUrl":"https://doi.org/10.2334/josnusd1959.38.21","url":null,"abstract":"Hydroxyproline (Hyp) and total protein levels were studied in gingiva from patients treated with phenytoin (PHT) and cyclosporine-A (CSA). The study included 5 groups of subjects: PHT and CSA groups with and without gingival overgrowth (PHT-GO+), (PHT-GO-), (CSA-GO+), (CSA-GO-), and periodontally healthy controls (C). After taking clinical measurements, gingival samples were harvested by gingivectomy or excising one or two papillae from the posterior areas. The samples were analyzed biochemically. In the PHT groups, both Hyp and total protein levels were significantly higher than in the C group. The differences between the PHT-GO+ and PHT-GO- groups were not statistically significant. In the CSA groups, total protein levels were significantly higher than in controls while no significant difference was found in Hyp levels. The differences between the CSA-GO+ and CSA-GO- groups were not statistically significant. When the PHT and CSA groups were compared, Hyp levels were significantly higher in the PHT-GO+ group than in the CSA-GO+ group. Total protein level differences between the PHT and CSA groups were not statistically significant. Correlations between age, plaque index, gingival overgrowth index, Hyp and total protein levels were analyzed and most were found not to be statistically significant. PHT appears to stimulate both collagen and total protein synthesis in gingiva while CSA seems to have a stronger effect on total protein synthesis. This suggests that the mechanisms underlying PHT- and CSA-induced gingival overgrowth are different and further comparative studies are needed.","PeriodicalId":22638,"journal":{"name":"The Journal of Nihon University School of Dentistry","volume":"38 1","pages":"21-30"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2334/josnusd1959.38.21","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19625579","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: 1

Osseous choristoma of the tongue. 舌骨性脉络瘤

The Journal of Nihon University School of Dentistry Pub Date : 1996-03-01 DOI: 10.2334/josnusd1959.38.49

Wei Cheong Ngeow, Chin Boon Lian, P Shanmahasuntharam

引用次数: 5

Detection of Epstein-Barr virus early replicative phase using monoclonal antibody BZ-1 in oral hairy leukoplakia and other hyperkeratotic oral mucosal lesions: a retrospective study. 单克隆抗体BZ-1在口腔毛状白斑及其他角化性口腔黏膜病变中检测eb病毒早期复制期的回顾性研究

The Journal of Nihon University School of Dentistry Pub Date : 1996-03-01 DOI: 10.2334/josnusd1959.38.37

M Ogütcen-Toller

{"title":"Detection of Epstein-Barr virus early replicative phase using monoclonal antibody BZ-1 in oral hairy leukoplakia and other hyperkeratotic oral mucosal lesions: a retrospective study.","authors":"M Ogütcen-Toller","doi":"10.2334/josnusd1959.38.37","DOIUrl":"https://doi.org/10.2334/josnusd1959.38.37","url":null,"abstract":"The early replicative phase of Epstein-Barr virus (EBV) was detected by immunohistochemistry, in addition to routine histology with hematoxylin eosin staining, in formalin fixed, paraffin-embedded archive specimens of 97 hyperkeratotic lesions including oral hairy leukoplakia (HL) in order to assess whether EBV is specific to HL, or if it occurs in other hyperkeratotic lesions of the oral mucosa. Monoclonal antibody (MAb) BZ-1 directed against the BZLF-1 gene product of EBV was used for immunostaining by the avidin-biotin peroxidase technique. The reaction was visualized with DAB/H2O2 solution and counterstained with PAS stain to detect any coexisting of hyphae of Candida. Eight lesions were reactive with BZ-1, confirming a diagnosis of HL, although the total number of lesions with koilocytoid features was 33. Seventy percent of the patients with confirmed HL lesions were HIV-seropositive, and 50% of the HL lesions were associated with Candida hyphae. One third of the lesions with koilocytoid features were associated with hyphae of Candida. Only one renal transplant patient had HL, confirmed by a positive BZ-1 reaction, although 60% of the hyperkeratotic lesions showed koilocytoid features in a subgroup of 15 patients with renal transplants.","PeriodicalId":22638,"journal":{"name":"The Journal of Nihon University School of Dentistry","volume":"38 1","pages":"37-48"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2334/josnusd1959.38.37","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19625581","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: 1

A finite element model of the human face. Stress distribution around the chin due to articulation of the five vowels in Japanese. 人脸的有限元模型。由于日语中五个元音的发音，下巴周围的重音分布。

The Journal of Nihon University School of Dentistry Pub Date : 1996-03-01 DOI: 10.2334/josnusd1959.38.11

M Motoyoshi, Y Hama, E Sugi, K Takahashi, K Kamijo, S Namura

引用次数: 2

An immunohistochemical study of two cases of either peripheral odontogenic fibroma (WHO type) or peripheral ameloblastoma. 两例外周牙源性纤维瘤(WHO型)或外周成釉细胞瘤的免疫组织化学研究。

The Journal of Nihon University School of Dentistry Pub Date : 1996-03-01 DOI: 10.2334/josnusd1959.38.52

Chong Huat Siar, N g Kok Han

引用次数: 3

Ehlers-Danlos syndrome (type VIII). Ehlers-Danlos综合征(VIII型)。

The Journal of Nihon University School of Dentistry Pub Date : 1995-12-01 DOI: 10.2334/josnusd1959.37.214

A Apaydin

引用次数: 15

Levels of serum IgG against Porphyromonas gingivalis in patients with rapidly progressive periodontitis, rheumatoid arthritis and adult periodontitis. 快速进展性牙周炎、类风湿性关节炎和成人牙周炎患者血清抗牙龈卟啉单胞菌IgG水平的研究

The Journal of Nihon University School of Dentistry Pub Date : 1995-12-01 DOI: 10.2334/josnusd1959.37.197

Z Yusof, S R Porter, J Greenman, C Scully

引用次数: 19

The influence of scattering on temporo-regional proliferation in the cultured Madin-Darby canine kidney (MDCK) cells. 散射对培养的Madin-Darby犬肾(MDCK)细胞时空增殖的影响。

The Journal of Nihon University School of Dentistry Pub Date : 1995-12-01 DOI: 10.2334/josnusd1959.37.201

M Sugahara, N Yahagi, H Takahashi, K Uchida, A Suzuki, H Matsui, K Isokawa, Y Toda

{"title":"The influence of scattering on temporo-regional proliferation in the cultured Madin-Darby canine kidney (MDCK) cells.","authors":"M Sugahara, N Yahagi, H Takahashi, K Uchida, A Suzuki, H Matsui, K Isokawa, Y Toda","doi":"10.2334/josnusd1959.37.201","DOIUrl":"https://doi.org/10.2334/josnusd1959.37.201","url":null,"abstract":"An epithelial Madin-Darby canine kidney (MDCK) cell line was grown in two kinds of standard media and a medium conditioned by MRC-5 embryonic lung cells, and temporo-regional differences in cell proliferation were examined by immunohistochemical detection of incorporated bromodeoxyuridine (BrdU). MRC-5-conditioned medium is known to contain scatter factor, which induces scattering of MDCK cells. In a proliferation assay, the BrdU labeling index (percentage ratio of BrdU-positive to total nuclei) was highest in day 2 cultures in the standard media, but on day 3 in the conditioned medium. MDCK cells in the standard media formed multiple epithelial sheets by day 2. In the conditioned medium, however, epithelial sheet formation was retarded and observed only after day 3. Once epithelial sheets had formed, cells close to the edge of the sheet were more proliferative than those distant from the edge in both standard and conditioned media. These findings suggest that proliferation of MDCK cells is suppressed during the scattering induced by the conditioned medium, and that their DNA synthesis becomes most active when cell scattering has ceased and epithelial sheets have begun to form.","PeriodicalId":22638,"journal":{"name":"The Journal of Nihon University School of Dentistry","volume":"37 4","pages":"201-8"},"PeriodicalIF":0.0,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2334/josnusd1959.37.201","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19788025","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: 0