发布求助
文献互助 智能选刊 最新文献

Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials最新文献

筛选
英文 中文
[Viscoelastic behaviour of inlay waxes. (Part 3) Dynamic viscoelastic properties of ternary and quaternary mixtures of waxes (author's transl)]. 镶嵌蜡的粘弹性行为。(第3部分)三元和四元蜡混合物的动态粘弹性性能[作者简介]。
Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials Pub Date : 1981-04-01
N Katakura
{"title":"[Viscoelastic behaviour of inlay waxes. (Part 3) Dynamic viscoelastic properties of ternary and quaternary mixtures of waxes (author's transl)].","authors":"N Katakura","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The viscoelastic properties of ternary and quaternary mixtures added carnauba wax, dammar and beeswax to paraffin were investigated by measurement of dynamic viscoelasticity. The effects of the composition of waxes and the crystal transition temperature of paraffin to the viscoelastic behaviour of these waxes were discussed. The viscoelastic properties of ternary mixtures added carnauba wax and dammar to paraffin were similar to these of binary mixtures for paraffin and dammar in the region of lower temperatures, and similar to these of binary mixtures for paraffin and carnauba wax in the region of higher temperatures. In quaternary mixtures added carnauba wax, dammar and beeswax, tan delta was larger than that of ternary mixtures, so the effect of additions of dammar was disappeared in the region of lower temperatures. Additions of carnauba wax, like to the case of ternary mixtures, had an effect on the viscoelastic properties of quaternary mixtures, but the temperature dependence of G' and tan delta of these waxes were slightly broader than that of ternary mixtures in the region of higher temperature. For a same composition in ternary and quaternary mixtures, even if the paraffins with different transition temperature were used, the shapes of curves of G' and tan delta were so similar to one another that were approximately superposable.</p>","PeriodicalId":76541,"journal":{"name":"Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials","volume":"22 58","pages":"129-35"},"PeriodicalIF":0.0,"publicationDate":"1981-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17995461","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
[Corrosion behavior of high copper amalgam (author's transl)]. [高铜汞合金的腐蚀行为(作者简介)]。
Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials Pub Date : 1981-04-01
J Onagawa, T Abe
{"title":"[Corrosion behavior of high copper amalgam (author's transl)].","authors":"J Onagawa,&nbsp;T Abe","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In this paper, the experiments have been carried out to find the effects of additional copper and to find a correlation between the microstructure and the electrochemical behavior of dental amalgam. The corrosion behavior of high copper amalgam has been investigated by potentiostatic anodic polarization in 0.9% NaCl solution and compared with conventional dental amalgam. High copper amalgam become appreciably more noble (potential shift from -0.15 V to 0.5 approximately 0.8 V vs SCE). Such a behavior has been explained in terms of the solid state transformation which involves the elimination of the corrosion prone gamma 2 phase and the conversion of an electrochemically Cu6Sn5 intermetallic to a noble Cu3Sn.</p>","PeriodicalId":76541,"journal":{"name":"Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials","volume":"22 59","pages":"157-61"},"PeriodicalIF":0.0,"publicationDate":"1981-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17997967","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
[Tensile deformation behaviour and mechanical properties in dental Ni-base casting alloys (author's transl)]. [牙科镍基铸造合金的拉伸变形行为和力学性能[作者简介]。
Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials Pub Date : 1981-04-01
K Wakasa, M Yamaki, A Nakatsuka, T Nishimura
{"title":"[Tensile deformation behaviour and mechanical properties in dental Ni-base casting alloys (author's transl)].","authors":"K Wakasa,&nbsp;M Yamaki,&nbsp;A Nakatsuka,&nbsp;T Nishimura","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Tensile deformation behaviour and mechanical properties were studied in dental Ni-base casting alloys as 32 Ni-23 Cu-25 Mn(alloy 1) and 84 Ni-9 Cr systems (alloy 2). 1) Stress-strain curves of alloys 1 and 2 showed, respectively, a liner hardening-type and a type of a gradual increase in stress with tensile strain. 2) Specific deformation behaviours of alloys 1 and 2 with tensile strain, respectively, offered different values in mechanical properties; alloy 2 that showed larger elongation and strength than brittle alloy 1 indicated ductile characteristics of good elasticity and elastic regilience. 3) Fracture mechanism in alloys 1 and 2 was corresponding to intercrystalline crack i. e. brittle fracture and transgranular crack within cell structure i. e. ductile fracture, respectively.</p>","PeriodicalId":76541,"journal":{"name":"Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials","volume":"22 59","pages":"217-21"},"PeriodicalIF":0.0,"publicationDate":"1981-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17995287","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
[Physical properties of adhesive 4-META resin cement (author's transl)]. 【胶粘剂4-META树脂水泥的物理性能(作者简介)】。
Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials Pub Date : 1981-04-01
K Nagata, M Takeyama, N Nakabayashi, E Masuhara
{"title":"[Physical properties of adhesive 4-META resin cement (author's transl)].","authors":"K Nagata,&nbsp;M Takeyama,&nbsp;N Nakabayashi,&nbsp;E Masuhara","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>4-Methacryloxyethyl trimellitate anhydride (4-META) had been reported to be a suitable monomer which promotes adhesiveness of PMMA rods with tooth substrates and metals. Previously an adhesive opaque resin which could eliminate mechanical retention devices from metal surface of crown and bridge metal frame was suggested. A new denture base resin, which is adhesive to metal denture plate, was also reported based on 4-META in MMA. We are going to publish a new application of 4-META to an adhesive dental cement in this paper. The physical properties of the new cement were measured: film thickness, 15 mu, tensile strength, 228 kg/cm2, compressive strength 920 kg/cm2, transvers strength , 530 kg/cm2, water sorption, 1.97 mg/cm2. Tensile adhesive strength of the cement was higher than 100 kg/cm2 between PMMA rods and dentine, enamel, dental alloys, and the stability was acceptable.</p>","PeriodicalId":76541,"journal":{"name":"Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials","volume":"22 58","pages":"143-6"},"PeriodicalIF":0.0,"publicationDate":"1981-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17995462","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
[Studies on Pd-Co-Ni dental casting ferromagnetic alloys. (Part I) (author's transl)]. Pd-Co-Ni牙科铸造铁磁合金的研究。(第一部分)[作者翻译]。
Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials Pub Date : 1981-04-01
H Harada
{"title":"[Studies on Pd-Co-Ni dental casting ferromagnetic alloys. (Part I) (author's transl)].","authors":"H Harada","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Many attempts have been made to use magnets as denture retention. But the magnet, such as alnico, ferrite or Pt-Co magnet, is not sufficient for our daily works. Recently, by using the rare earth metal-cobalt magnet, especially Sm-Co magnet, clinicians have gained good results. But magnet, itself, is not good for use in the mouth. Because it is scarcely possible to shape the magnet into suitable forms, it is easy to be broken by masticatory pressure, and its corrosion resistance is not sufficient and so on. To improve these difficulties, Pd-Co-Ni casting alloys which have soft ferromagnetic properties have been developed in this paper. Some metals were added to the alloy to improve the castability of the ferromagnetic alloy. Magnetic properties, range of solidification temperature and castability were examined. As a result, it was found that (43 Pd-27 Co-30 Ni)-10 Au-0.1 Si and (43 Pd-27 Co-30 Ni)-5 Cu-0.1 Si alloy had most excellent properties.</p>","PeriodicalId":76541,"journal":{"name":"Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials","volume":"22 59","pages":"241-5"},"PeriodicalIF":0.0,"publicationDate":"1981-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17995289","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
[Studies on Pd-Co-Ni dental casting ferromagnetic alloys. (Part II) (author's transl)]. Pd-Co-Ni牙科铸造铁磁合金的研究。(第二部分)[作者翻译]。
Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials Pub Date : 1981-04-01
H Harada
{"title":"[Studies on Pd-Co-Ni dental casting ferromagnetic alloys. (Part II) (author's transl)].","authors":"H Harada","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In the previous paper, the effect of added metals such as Au, Cu, Cr, Si, etc., on the 43 Pd-27 Co-30 Ni alloy was reported. In this paper, the magnetic properties, mechanical properties, corrosion resistance and casting accuracy of the Pd-Co-Ni alloys containing Au, Zn and Si were studied. Results were as follows: 1) Mechanical properties and corrosion resistance of these alloys satisfied the standards for the dental casting alloys. 2) The corrosion resistance of the alloy containing 10 wt% Au was excellent in comparison with other specimens. 3) Casting accuracy was improved by addition of 10 wt% Au-0.1 wt% Si or 10 wt% Au-1 wt% Zn to the base 43 Pd-27 Co-30 Ni alloy.</p>","PeriodicalId":76541,"journal":{"name":"Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials","volume":"22 59","pages":"246-52"},"PeriodicalIF":0.0,"publicationDate":"1981-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17996367","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
[Studies on the performance of the dental air turbine handpieces. (Part 4) Analysis of the rotational performance of air turbine handpieces (N = N0 - CvFv gamma (author's transl)]. 牙科空气涡轮机头的性能研究。(第四部分)空气涡轮手机的旋转性能分析(N = N0 - CvFv γ(作者译))。
Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials Pub Date : 1981-04-01
H Miyairi, M Nagai, H Fukuda, A Muramatsu
{"title":"[Studies on the performance of the dental air turbine handpieces. (Part 4) Analysis of the rotational performance of air turbine handpieces (N = N0 - CvFv gamma (author's transl)].","authors":"H Miyairi,&nbsp;M Nagai,&nbsp;H Fukuda,&nbsp;A Muramatsu","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>By the introduction of the diamond instruments and carbide burs measurably improved the quality and ease of cavity preparation, the several kinds of the air turbine handpieces, that is, standard type, torque type and miniature type air handpieces have been recently developed. In this paper, the performance tests of these air turbine handpieces have been carried out, and obtained the relations are indicated speeds and the vertical and horizontal loads or torque using the test bur. These relations are indicated by the logarithmic expressions, N = N0 - CvFv gamma, where N is the rotational speed of the air turbine handpieces during rotation, N0 is the free rotational speed of the air turbine handpieces, Fv is the vertical loads on the tests burs and Cv and gamma is the experimental constants. And then, the maximum performed work or the air turbine handpieces is presented by the expression as follows. W max = pimicrod/60(1/Cv)1/ gamma gamma (N0/gamma + 1)(1 + gamma)/gamma And we proposed the formula to be calculated for the performance ability of the air turbine handpieces.</p>","PeriodicalId":76541,"journal":{"name":"Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials","volume":"22 58","pages":"136-42"},"PeriodicalIF":0.0,"publicationDate":"1981-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18073034","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
[Cast structures and mechanical properties of Ir added to Ag-based alloys. (Part 1) (author's transl)]. [au:]添加到ag基合金中的Ir的铸造组织和力学性能。(第一部分)[作者译文]。
Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials Pub Date : 1981-04-01
H Honma, K Iijima
{"title":"[Cast structures and mechanical properties of Ir added to Ag-based alloys. (Part 1) (author's transl)].","authors":"H Honma,&nbsp;K Iijima","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The effect of very small quantity of Ir added to pure Agb or Ab-based casting alloys on the mechanical properties were investigated by microstructure observation, tensile test, XMA (electron probe micro analysis) and electrical resistivity measurement. 1) An addition of 0.005% Ir to pure Ag caused grain refinement, increased elongation, yield point, tensile strength. However, the refinement effect did not proportionally increase to the amount of additional Ir. 2) An addition of Ir to Ag alloy containing 7% Cu caused to finely dispersed beta phase in the as cast alloy and degraded the dendrite structure. As a result, homogenization and aging were accelerated. Mechanical properties i. e. elongation, yield point and tensile strength increased in castings and homogeneous state and yield point increased in aging state. The addition of about 0.05% Ir appeared optimum. 3) An addition of Ir to an Ag alloy containing 15% Cu caused grain refinement of the alloy as cast but its effect on the mechanical properties of the alloy was not clarified owing to casting defects. 4) 0.05% Ir added to an Ag alloy containing 20% Pd and 7% Cu did not show an apparent refinement effect. The optimum quantity of Ir is assumed to differ depending on the amount of Pd content.</p>","PeriodicalId":76541,"journal":{"name":"Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials","volume":"22 59","pages":"235-40"},"PeriodicalIF":0.0,"publicationDate":"1981-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18080681","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
Evidence of a critical value in the porosity-strength relationship for a conventional spherical amalgam. 一个临界值的证据，在孔隙率-强度关系的传统球形汞合金。
Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials Pub Date : 1981-01-01
M Adachi, H Otani
{"title":"Evidence of a critical value in the porosity-strength relationship for a conventional spherical amalgam.","authors":"M Adachi,&nbsp;H Otani","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":76541,"journal":{"name":"Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials","volume":"22 57","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17991770","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
[The fluidity of alloys in high temperature. (Part 1) Testing apparatus of fluidity in high temperature (author's transl)]. 合金在高温下的流动性。(第1部分)高温流动性测试仪[作者简介]。
Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials Pub Date : 1981-01-01
H Inaba
{"title":"[The fluidity of alloys in high temperature. (Part 1) Testing apparatus of fluidity in high temperature (author's transl)].","authors":"H Inaba","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The method and apparatus for testing the fluidity of molten alloy in the mold of high temperature as far as about 650 degrees C were designed and the fluidity of pure Ag and Ag-Cu alloy were measured. The results were summarized as follows. (1) The flow length (y mm) of pure Ag increased as the degree of superheat (B degree C) watch with casting temperature minus melting point and the temperature of mold (A degree C) increased. Estimating the formula for the flow length y, it was found that y was represented by the sum of the first order formula of A and B. (2) The flow length of Ag-Cu alloy took large value when the mold with heated up to 650 degrees C. Estimating the formula for the flow length y, it was found that y was represented by the sum of the third order formula of A and the first order formula of B and the formula of the product of A and B.</p>","PeriodicalId":76541,"journal":{"name":"Shika rikogaku zasshi. Journal of the Japan Society for Dental Apparatus and Materials","volume":"22 57","pages":"37-44"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17991772","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信