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.

第一部分研究了膜厚对铸件固位强度的影响。1.水泥膜厚度的不同对复合型和MMA型两种水泥的固位强度没有影响。2.实际水泥空间小于计算确定的水泥空间。实际骨水泥间距与计算骨水泥间距之比为0.85±0.09。3.SuperBond C/B比Panavia 21具有更高的粘结强度。由比表面积换算得到的拉伸结合强度分别为10和6 Mpa。4.大多数情况下，牙本质与骨水泥之间的界面断裂是通过目视观察到的。第二部分，研究了在热应力(5~58℃、1,000或10,000次)作用下，膜厚对固位强度和粘接剂渗漏的影响。1.一般情况下，除富士路特外，膜厚对固位强度的影响不明显，膜厚对边缘渗漏的影响除Super Bond外也不明显，2.在Panavia的固位强度约为20 kg。经10,000次热应力处理后，边缘渗漏显著增加，染料渗入深度是1,000次的3倍。3.在超级粘结的情况下，发挥了最高的固位强度，约35公斤。膜厚与边际渗漏的相关性接近显著水平，即膜厚越厚，边际渗漏越小。4.对于富士鲁特，固位力随膜厚的增加而增大。其固位力与帕纳维亚相当。即使在1000次热应力循环后，仍观察到相对较高的从侧壁到型腔地板的边缘渗漏。5.Panavia和Fuji Lute的固位力与边缘渗漏的相关性较低，而Super Bond的相关性接近显著水平。

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。