巻号一覧
20 巻 (1953)
- 4 号 p. 229-
- 3 号 p. 187-
- 2 号 p. 129-
- 1 号 p. 1-
20 巻, 1 号
選択された号の論文の16件中1～16を表示しています
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特殊低熔人工陶歯の製造について末野 悌六, 加藤 一男, 秦 孝明1953 年 20 巻 1 号 p. 1-11
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーLow fusing porcelain teeth (800° to 900°C) was manufactured from borosilicate glass powder. And its superiority to other usual porcelain teeth was tested in comparison of their physical properties, such as: transparency, strength, expansion, chemical-proof, porocity and spalling test.抄録全体を表示PDF形式でダウンロード (3274K) -
三浦 維四, 本間 久夫1953 年 20 巻 1 号 p. 12-15
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーThe effects of 0.5 and 2 per cent Si added to Ag and Ag-Zn alloys were studied and the Ag-16% Zn-0.5% Si showed the best tarnish-resistivity against 0.1 per cent natrium sulphide solution. No peculiar improvement of resistivity could be found from the results obtained anodizing these alloys.抄録全体を表示PDF形式でダウンロード (501K) -
三浦 維四, 本間 久夫, 櫻井 実1953 年 20 巻 1 号 p. 16-21
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーThe problem on solutions for chemical polishing of Ni-Cr alloy and the effect of chemical and electrolytic polishing on the strength and anti-corrosibility of Ni-Cr alloy were studied. The important results obtained in this study are as follows :
1. As chemical polishing solution, conc. HCl, HCl+HNO3, H2SO4+HNO3, H3PO4+H2SO4+HNO3, etc. were excellent, but these reagents could only remove the secondary black surface-film produced by gas-fire.
2. Loss in weight became marked, when the time for chemical polishing were too long. This resulted in a decrease of strength, but the result of bending test showed no diminution of ductility.
3. The result on electrode potential in 0.05 per cent HCl solution showed an improvement of anti-corrosibility of alloy by chemical and electrolytic polishing.抄録全体を表示PDF形式でダウンロード (802K) -
村松 篤良1953 年 20 巻 1 号 p. 21-24
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーThe relations of the mechanical properties to the reduction of area of 18 Cr : 8 Ni stainless steel wires were studied. The measured properties were tensile strength, elongation, elastic limit and torsional strength, and used specimen's reduction of area was 0, 10—15, 30, 60 and 75 per cent.抄録全体を表示PDF形式でダウンロード (441K) -
歯科用アクリツクレジンの性質に対するポリマーの粒度並に平均重合度の影響に就て増原 英一, 樽見 二郎1953 年 20 巻 1 号 p. 25-33
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーThe purpose of this study is to make clear the relationship between particle size and average degree of polymerization of polymers for the esthetic properties, the process of dough preparation, and the physical properties of the processed resins. The experimental materials by Mitubisi Rayon Co. was utilized and the size of the polymer particles varies from 40 mesh to 200 mesh. Material H.DAC is average degree of polymerization 6000-8000. And L.DAC is 2000-4000 degree.
The series of these experiments clearly shows that the difference in particle size can not be correlated with any particular physical properties of processed resin, but the esthetic properties is different. A large polymer of particle size 40-80 mesh is likely to produce a somewhat mottled appearance in the finished denture base.
The degree of polymerization is more effective than particle size, in the process of dough, preparation and H.DAC is markedly rapid in the same process, while L.DAC is slow in this process.抄録全体を表示PDF形式でダウンロード (5804K) -
増原 英一, 小島 邦晴, 田中 吉三, 樽見 二郎1953 年 20 巻 1 号 p. 34-40
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーSince the self-curing resin was discovered by Schnebel (Germany) in 1941, it has been manufactured by all other countries.
The first part of this study, which is now being continued, was begun to determine desirable amines and the method of their synthesis. From the results obtained it was found that the desirable amine is dimethyl p-toluidine or diethyl p-toluidine and the useful concentration of amine is 0.7-1.2 percent in monomer.
Then the filling self-curing resins could be pxoduced by which we had obtained the speed of polymerization and the curing characterist's.抄録全体を表示PDF形式でダウンロード (5406K) -
村松 篤良, 塩川 延洋, 増原 英一, 三宅 聰1953 年 20 巻 1 号 p. 41-44
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーTension, compression, impact, hardness were tested, and the effect of test-conditions on acrylic resins could be explained by the appearance of rupture in the tension test.抄録全体を表示PDF形式でダウンロード (389K) -
アルキル (アリル) クロヽシランの合成小島 邦晴1953 年 20 巻 1 号 p. 45-54
発行日: 1953年
公開日: 2010/12/08
ジャーナル フリーThe Synthesis of alkyl chloro silane, i.e, silicon resin is described. It could be found that therate of reaction is maximum under the following conditions : 300°C of reaction temperature 30-50cc per minute of flow velocily of methylchloride, silicon and copper powder containing 50% Cu as contact mass, and stanuous chloride or cuprous chloride as catalysts in the direct reaction between silicon and methyl chloride. Then a new method of synthesis of Phenyl chloro silane was described. Tetraphenyl silane was first prepared by Post's method. It was found that by heating the mixture of tetraphenylsilane and silicon tetrachlorid at high temperature under the presence of catalyst of aluminum chloride in seald glass tubes, transferences of phenyl radicals between each substance occured and gave phenyl chlorosilane.
This new method of synthesis of other alkyl chlorosilane was applied as described in the fourth part.抄録全体を表示PDF形式でダウンロード (1139K) -
川上 道夫1953 年 20 巻 1 号 p. 55-58
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーThe author examined accuracy dimensional change and compression tests of alginate impression materials made in Japan.
1) Length change of models was less than 0.1 per cent as compared with prototypes except one product.
2) When alginate impression moulds were exposed in air, they shrank 0.1 per cent in 10 to 20 minutes.
3) When they were immersed in water, they also shrank ; when one of them was immersed in fixing solution, the shrinkage was more remarkable than in water.
4) Under the stress of 1Kg/cm2, strain was 10.2 to 24.0 percent and permanent set over 4.5 per cent.抄録全体を表示PDF形式でダウンロード (469K) -
寺田 正一, 広田 キヱ子, 小林 茂夫1953 年 20 巻 1 号 p. 59-60
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーA kind of the innoxious temporary dental stopping was prepared, which was characterized by mixing the powder with the solution and causing them a reaction : the powder consisted of aluminium sulphate, whose crystal water was reduced to 4 to 5 molecules, calcium sulphate, bolus alba, and wax taken from ceroplasters rubens maskell, while the solution consisted of water solution of gum Arabic or carrageen.抄録全体を表示PDF形式でダウンロード (245K) -
寺田 正一1953 年 20 巻 1 号 p. 61-66
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーPDF形式でダウンロード (776K) -
I弗素イオンとエナメル質中の燐酸根とのイオン置換に関する研究 (I, II, III)増原 英一, 伊藤 貞司, T. Umiuti1953 年 20 巻 1 号 p. 67-81
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーPDF形式でダウンロード (3837K) -
IIエナメル質粉体に対する弗稀薄化物溶液の作用について (I)増原 英一, 海内 敏子1953 年 20 巻 1 号 p. 82-84
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーPDF形式でダウンロード (408K) -
村松 篤良, 隈部 淳一郎1953 年 20 巻 1 号 p. 85-88
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーMachinability of the tooth was measured by means of the machinability testing machine designed by the authors which elastic ring and bellows were applied to. The results obtained showed that this machine is satisfactory as a cutting tool for dental use.抄録全体を表示PDF形式でダウンロード (2453K) -
第1編 新しい研削試驗法増田 泰二, 石岡 靖1953 年 20 巻 1 号 p. 89-102
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーPDF形式でダウンロード (7922K) -
末野 悌六, 加藤 一男, 秦 孝明1953 年 20 巻 1 号 p. 103-127
発行日: 1953年
公開日: 2010/10/08
ジャーナル フリーFine-grained powder of cristobalite was produced from some special raw material by means of baking at about 1, 300°C. It has heating expansive percentage up to 1.6.
The following various problems on casting conditions of investment material was discussed : influence of plasters, various testing methods, the properties of investments, and the heating expansion of the casting ring.抄録全体を表示PDF形式でダウンロード (8599K)
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