Effect of film thickness of adhesive-resin cements on retentive strength of castings

树脂粘合剂膜厚对铸件保持强度的影响

• 批准号: 10671794
• 负责人: OHSAWA Masahiro
• 金额: $ 1.73万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10671794/
• 关键词: Adhesive resin cements; Film thickness; Retentive strength; Marginal leakage; thermal stress; 接着性レジンセメント; 窩洞試験

In Part I, effect of film thickness on retentive strength of castings were studied. 1. Differences in cement film thickness did not affect the retentive strength in two kinds of cement used, composite type and MMA type. 2. Actual cement space was smaller than that determined by calculation. The ratio of Actual/ calculated cement space was 0.85±0.09. 3. Super Bond C/B exhibited higher bond strength than Panavia 21. The tensile bond strength converted from the surface area was 10 and 6 Mpa, respectively. 4. In most cases, the interfacial fracture between tooth substance and cement was observed with nakied eye.In Part II, effects of film thickness on retentive strength and marinal leakage was investigated under the thermal stress (5〜58℃, 1,000 or 10,000 times). 1. In general, effect of film thickness on retentive strength was not clearly observed except Fuji Lute, and the effect of film thickness on marginal leakage also was not clear except Super Bond, 2. In the case of Panavia, the retentive strength of approximately 20 kg was exhibited. Marginal leakage increased significantly after 10,000 cycles of thermal stress, and the dye penetration was three times deeper compared that of 1,000 cycle. 3. In the case of Super bond, the highest retentive strength of approximately 35 kg was exerted. The correlation between the film thickness and marginal leakage was close to the significant level, that is, the thicker the film thickness, the lesser the marginal leakage. 4. In the case of Fuji Lute, the retentive strength increased in accordance with the film thickness. The retentive strength was comparative to that of Panavia. Relatively higher marginal leakage was observed beyond the side wall to the cavity floor even after 1,000 cycles of thermal stress. 5. Correlation between the retentive strength and marginal leakage was low for Panavia and Fuji Lute, and close to significant level for Super Bond.

在第一部分中，研究了膜厚度对铸件的保留强度的影响。 1。水泥膜厚度的差异不会影响两种水泥，复合类型和MMA类型的保留强度。 2。实际水泥空间小于计算确定的水泥空间。实际/计算的水泥空间的比率为0.85±0.09。 3。超级键C/B暴露于Panavia 21的键强度更高。从表面积转化的拉伸键强度分别为10和6 MPa。 4。在大多数情况下，在第二部分中观察到牙齿物质和水泥之间的界面断裂，在热应激（5-58°C，1,000或10,000次）下，膜厚度对保留强度和玛尔纳尔泄漏的影响进行了研究。 1。总的来说，除了富士叶，膜厚度对保留强度的影响没有清楚地观察到，而且膜厚度对边际泄漏的影响也不清楚，除非超级键，否则2。对于Panavia，暴露了约20 kg的保留强度。 10,000个热应力周期后，边缘泄漏显着增加，并且染料渗透比1,000个周期更深三倍。 3。在超级键的情况下，施加了大约35 kg的最高保留强度。膜厚度和边际泄漏之间的相关性接近显着水平，即膜厚度的厚度，边缘泄漏越小。 4。在富士琵琶的情况下，根据膜厚度，保留强度提高了。保留强度与Panavia相比。即使经过1000个热应力，即使在1000个循环后，也观察到相对较高的边缘泄漏到腔底的边缘泄漏。 5。对于Panavia和Fuji Lute而言，保留强度和边际泄漏之间的相关性很低，超级键接近显着的水平。

项目成果

大澤雅博: "鋳造体の保持力ならびに辺縁漏洩に及ぼす接着性レジンセメントの被膜厚さの影響-熱刺激下の検討-"日本歯科保存学雑誌. 42. 687-696 (1999)

Masahiro Osawa：“粘合树脂水泥涂层厚度对铸体固位力和边缘渗漏的影响 - 热刺激下的研究 -”日本保守牙科杂志 42. 687-696 (1999)。

大澤雅博: "鋳造体の保持力に及ぼす接着性レジンセメントの被膜厚さの影響"日本歯科保存学雑誌. 41. 677-682 (1998)

Masahiro Osawa：“粘合树脂水泥涂层厚度对铸体固位力的影响”日本保守牙科杂志 41. 677-682 (1998)。

Masahiro OHSAWA: "Effect of Film Thickness of Adhesive Resin Cements on Ritentive Strengh of castings"Jap. J. Coservative Dent.. 41(4). 677-682 (1998)

Masahiro OHSAWA：“粘合性树脂水泥的膜厚对铸件的保持强度的影响”Jap。

大澤雅博: "鋳造体の保持力ならびに辺縁漏洩に及ぼす接着性レジンセメントの被膜厚さの影響-熱刺激下の検討-"日本歯科保存学雑誌. 42(4). 687-696 (1999)

Masahiro Osawa：“粘合树脂水泥涂层厚度对铸体固位力和边缘渗漏的影响 - 热刺激下的研究 -”日本保守牙科杂志 42(4) 687-696 (1999)。

Masahiro OHSAWA: "Effect of Film Thickness of Adhesive Resin Cements on Retentive Strengh and Marginal Leakage of Castings -Influence of Thermal Stress-"Jap. J. Coservative Dent.. 42(4). 687-696 (1999)

Masahiro OHSAWA：“粘合性树脂水泥的膜厚对铸件的保持强度和边缘泄漏的影响 - 热应力的影响 -”Jap。