Pub Date : 1999-12-30DOI: 10.11516/DENTALMEDRES1981.19.388
E. Wakatsuki, W. Song, S. Kondo, K. Nakajima, Kimiko Naito
{"title":"Studies on Heads and Faces between Sundadonty and Sinodonty","authors":"E. Wakatsuki, W. Song, S. Kondo, K. Nakajima, Kimiko Naito","doi":"10.11516/DENTALMEDRES1981.19.388","DOIUrl":"https://doi.org/10.11516/DENTALMEDRES1981.19.388","url":null,"abstract":"","PeriodicalId":77624,"journal":{"name":"Showa Shigakkai zasshi = The Journal of Showa University Dental Society","volume":"19 1","pages":"388-393"},"PeriodicalIF":0.0,"publicationDate":"1999-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64476385","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}
Pub Date : 1999-09-30DOI: 10.11516/DENTALMEDRES1981.19.235
Mamoru Kido, Y. Sasaki, Tae-Weon Kim, N. Ohyori, Yoshie Iso, T. Sahara, Y. Sawae, Takahisa Sasaki
{"title":"An Ultrastructural Study of the Cells Involved in Endochondral Ossification in Humeral Growth Plates of Young Beagle Dogs","authors":"Mamoru Kido, Y. Sasaki, Tae-Weon Kim, N. Ohyori, Yoshie Iso, T. Sahara, Y. Sawae, Takahisa Sasaki","doi":"10.11516/DENTALMEDRES1981.19.235","DOIUrl":"https://doi.org/10.11516/DENTALMEDRES1981.19.235","url":null,"abstract":"","PeriodicalId":77624,"journal":{"name":"Showa Shigakkai zasshi = The Journal of Showa University Dental Society","volume":"19 1","pages":"235-245"},"PeriodicalIF":0.0,"publicationDate":"1999-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64475955","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}
Pub Date : 1999-06-30DOI: 10.11516/DENTALMEDRES1981.19.147
T. Igarashi, A. Yamamoto, H. Ida, R. Sasa, N. Goto
{"title":"Polymerase Chain Reaction for Differentiation of Streptococcus sobrinus and Streptococcus downei","authors":"T. Igarashi, A. Yamamoto, H. Ida, R. Sasa, N. Goto","doi":"10.11516/DENTALMEDRES1981.19.147","DOIUrl":"https://doi.org/10.11516/DENTALMEDRES1981.19.147","url":null,"abstract":"","PeriodicalId":77624,"journal":{"name":"Showa Shigakkai zasshi = The Journal of Showa University Dental Society","volume":"19 1","pages":"147-151"},"PeriodicalIF":0.0,"publicationDate":"1999-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64475897","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}
Pub Date : 1999-03-31DOI: 10.11516/DENTALMEDRES1981.19.25
M. Sano
5-HT (0.01-10 ,uM) contracted isolated hilar bronchus from guinea pig treated with tetrodotoxin in a cocentration-depentent manner. 5-HT2-agonists, such as 5-methoxytryptamine (5-MeOT) and cy-methyl-5-HT(a-Me-5-HT), also caused a similar contraction to 5-HT. Other types of 5-HT agonists, such as 8-hydroxy-2-(di-n-propylamino) tetralin (8-OH-DPAT, 5-HT1 agonist) of 2-methyl-5-HT (2-Me-5-HT, 5-HT3 agonist) cause no obvious contraction in the preparation. The concentration-response curve of 5-HT was inhibited by the 5-HT2 antagonists, ketanserin, ritanserin, LY53857 and 1-(3-chlorophenyl) piperazine (mCPP) in a concentrationdependent manner, while the maximum response of 5-HT was reduced by them. These results suggest that 5-HT-induced contraction may be mediated through an action on 5-HT2-like receptors, and that the receptors mediating the responses of 5-HT in hilar bronchus are different from those in other tissues in their pharmacological profile.
5-HT (0.01-10,uM)呈浓度依赖性感染河豚毒素处理豚鼠离体肺门支气管。5- ht2激动剂，如5-甲氧基色胺(5-MeOT)和cy-甲基-5-HT(a- me -5-HT)，也能引起与5-HT类似的收缩。其他类型的5-HT激动剂，如2-甲基-5-HT (2-Me-5-HT, 5-HT3激动剂)的8-羟基-2-(二正丙胺)四氢萘(8-OH-DPAT, 5-HT1激动剂)在制备过程中没有引起明显收缩。5-HT的浓度-反应曲线被5-HT2拮抗剂酮色林、利坦色林、LY53857和1-(3-氯苯基)哌嗪(mCPP)呈浓度依赖性地抑制，而5-HT的最大反应被它们降低。这些结果表明，5-HT诱导的收缩可能是通过对5- ht2样受体的作用介导的，并且在肺门支气管中介导5-HT反应的受体在其药理谱上不同于其他组织。
{"title":"Characterization of Contractile 5-Hydroxytriptamine (5-HT) Receptors in Isolated Bronchial Smooth Muscle from Guinea Pig","authors":"M. Sano","doi":"10.11516/DENTALMEDRES1981.19.25","DOIUrl":"https://doi.org/10.11516/DENTALMEDRES1981.19.25","url":null,"abstract":"5-HT (0.01-10 ,uM) contracted isolated hilar bronchus from guinea pig treated with tetrodotoxin in a cocentration-depentent manner. 5-HT2-agonists, such as 5-methoxytryptamine (5-MeOT) and cy-methyl-5-HT(a-Me-5-HT), also caused a similar contraction to 5-HT. Other types of 5-HT agonists, such as 8-hydroxy-2-(di-n-propylamino) tetralin (8-OH-DPAT, 5-HT1 agonist) of 2-methyl-5-HT (2-Me-5-HT, 5-HT3 agonist) cause no obvious contraction in the preparation. The concentration-response curve of 5-HT was inhibited by the 5-HT2 antagonists, ketanserin, ritanserin, LY53857 and 1-(3-chlorophenyl) piperazine (mCPP) in a concentrationdependent manner, while the maximum response of 5-HT was reduced by them. These results suggest that 5-HT-induced contraction may be mediated through an action on 5-HT2-like receptors, and that the receptors mediating the responses of 5-HT in hilar bronchus are different from those in other tissues in their pharmacological profile.","PeriodicalId":77624,"journal":{"name":"Showa Shigakkai zasshi = The Journal of Showa University Dental Society","volume":"19 1","pages":"25-30"},"PeriodicalIF":0.0,"publicationDate":"1999-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64476053","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}
Pub Date : 1998-12-25DOI: 10.11516/DENTALMEDRES1981.18.341
K. Yokoyama, T. Komori, Koukichi Matsumoto
{"title":"Electro-magnetic Interference of Electronic Apex Locator, Pulp Tester and Iontophoresis Apparatus to Patients with Cardiac Pacemakers","authors":"K. Yokoyama, T. Komori, Koukichi Matsumoto","doi":"10.11516/DENTALMEDRES1981.18.341","DOIUrl":"https://doi.org/10.11516/DENTALMEDRES1981.18.341","url":null,"abstract":"","PeriodicalId":77624,"journal":{"name":"Showa Shigakkai zasshi = The Journal of Showa University Dental Society","volume":"18 1","pages":"341-345"},"PeriodicalIF":0.0,"publicationDate":"1998-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64476112","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}
Pub Date : 1998-09-30DOI: 10.11516/DENTALMEDRES1981.18.229
T. Kodaka, T. Sano, M. Abe
The ratio of hydroxyapatite (HAP) to calcium hydrogenphosphate (CHP) in 4 commercial dentifrices, which are denoted to contain HAP and CHP, were calculated from the Ca/P molar ratio obtained from energy-dispersive X-ray microanalysis. The ratios of HAP to CHP in the commercial dentifrices were [0.22 to 0.78], [0.23 to 0.77], [0.25 to 0.75], and [0.47 to 0.53], respectively. From our previous in-vitro studies on brushing of human enamel with commercial dentifrices containing HAP and CHP [0.23 to 0.77], and containing CHP but no HAP [0 to 1.00], we suggest that a larger amount of HAP in dentifrice shows a stronger abrasivity, though the HAP is indicated as an active ingredient not but an abrasive.
{"title":"Ratio of Hydroxyapatite to Calcium Hydrogenphosphate in Some Commercial Dentifrices Containing Hydroxyapatite, Energy-Dispersive X-Ray Microanalysis Study","authors":"T. Kodaka, T. Sano, M. Abe","doi":"10.11516/DENTALMEDRES1981.18.229","DOIUrl":"https://doi.org/10.11516/DENTALMEDRES1981.18.229","url":null,"abstract":"The ratio of hydroxyapatite (HAP) to calcium hydrogenphosphate (CHP) in 4 commercial dentifrices, which are denoted to contain HAP and CHP, were calculated from the Ca/P molar ratio obtained from energy-dispersive X-ray microanalysis. The ratios of HAP to CHP in the commercial dentifrices were [0.22 to 0.78], [0.23 to 0.77], [0.25 to 0.75], and [0.47 to 0.53], respectively. From our previous in-vitro studies on brushing of human enamel with commercial dentifrices containing HAP and CHP [0.23 to 0.77], and containing CHP but no HAP [0 to 1.00], we suggest that a larger amount of HAP in dentifrice shows a stronger abrasivity, though the HAP is indicated as an active ingredient not but an abrasive.","PeriodicalId":77624,"journal":{"name":"Showa Shigakkai zasshi = The Journal of Showa University Dental Society","volume":"18 1","pages":"229-233"},"PeriodicalIF":0.0,"publicationDate":"1998-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64476023","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}
Pub Date : 1998-06-30DOI: 10.11516/DENTALMEDRES1981.18.199
T. Kodaka, K. Debari, M. Yamada
{"title":"Correlation between Microhardness and Mineral Content in Sound Human Dentin","authors":"T. Kodaka, K. Debari, M. Yamada","doi":"10.11516/DENTALMEDRES1981.18.199","DOIUrl":"https://doi.org/10.11516/DENTALMEDRES1981.18.199","url":null,"abstract":"","PeriodicalId":77624,"journal":{"name":"Showa Shigakkai zasshi = The Journal of Showa University Dental Society","volume":"18 1","pages":"199-201"},"PeriodicalIF":0.0,"publicationDate":"1998-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64475851","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}
Pub Date : 1998-06-30DOI: 10.11516/DENTALMEDRES1981.18.214
T. Cao, K. Ohno, T. Shirota, K. Michi
This study was investigated whether bone regeneration is improved in the healing of experimental osseous defects with subperiosteal membranes. Muscle/periosteal flaps were raised, and 4.5-mm osseous defects were created bilaterally in the tibiae of ten rabbits. On the test side, a silicone membrane was placed over the defect, and the flaps were sutured outside the membrane. The defect on the contralateral side served as a control (no membrane). After healing periods of 1, 2, 4 and 8 weeks the animals were killed, and 15 pm hematoxylin-eosin-stained, undecalcified sections were prepared and examined histologically. The results suggest that the subperiosteal membrane keeps the osteogenic tissue structurally stable so that osteogenesis remains functionally stable during the early stages of healing.
{"title":"Bone Defect Healing by Nonabsorbable Membrane for Guided Tissue Regeneration","authors":"T. Cao, K. Ohno, T. Shirota, K. Michi","doi":"10.11516/DENTALMEDRES1981.18.214","DOIUrl":"https://doi.org/10.11516/DENTALMEDRES1981.18.214","url":null,"abstract":"This study was investigated whether bone regeneration is improved in the healing of experimental osseous defects with subperiosteal membranes. Muscle/periosteal flaps were raised, and 4.5-mm osseous defects were created bilaterally in the tibiae of ten rabbits. On the test side, a silicone membrane was placed over the defect, and the flaps were sutured outside the membrane. The defect on the contralateral side served as a control (no membrane). After healing periods of 1, 2, 4 and 8 weeks the animals were killed, and 15 pm hematoxylin-eosin-stained, undecalcified sections were prepared and examined histologically. The results suggest that the subperiosteal membrane keeps the osteogenic tissue structurally stable so that osteogenesis remains functionally stable during the early stages of healing.","PeriodicalId":77624,"journal":{"name":"Showa Shigakkai zasshi = The Journal of Showa University Dental Society","volume":"18 1","pages":"214-218"},"PeriodicalIF":0.0,"publicationDate":"1998-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64475920","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}
Pub Date : 1998-03-31DOI: 10.11516/DENTALMEDRES1981.18.38
T. Igarashi, H. Ida, A. Yamamoto, R. Sasa, N. Goto
{"title":"Differentiation of Streptococcus sobrinus and Streptococcus downei by DNA Hybridization","authors":"T. Igarashi, H. Ida, A. Yamamoto, R. Sasa, N. Goto","doi":"10.11516/DENTALMEDRES1981.18.38","DOIUrl":"https://doi.org/10.11516/DENTALMEDRES1981.18.38","url":null,"abstract":"","PeriodicalId":77624,"journal":{"name":"Showa Shigakkai zasshi = The Journal of Showa University Dental Society","volume":"18 1","pages":"38-42"},"PeriodicalIF":0.0,"publicationDate":"1998-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64475699","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}
Pub Date : 1998-03-31DOI: 10.11516/DENTALMEDRES1981.18.43
T. Kodaka, T. Sano, R. Mori
{"title":"Scanning Electron Microscopy Followed by Combined Treatment of Sodium Hypochlorite and EDTA in Collaenous Calcified Tissues","authors":"T. Kodaka, T. Sano, R. Mori","doi":"10.11516/DENTALMEDRES1981.18.43","DOIUrl":"https://doi.org/10.11516/DENTALMEDRES1981.18.43","url":null,"abstract":"","PeriodicalId":77624,"journal":{"name":"Showa Shigakkai zasshi = The Journal of Showa University Dental Society","volume":"18 1","pages":"43-49"},"PeriodicalIF":0.0,"publicationDate":"1998-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64475835","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}
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