Application of the gold alloy with age-hardning ability at 37ﾟC to resin-bonded fixed partial denture

37℃时效硬化金合金在树脂粘接固定局部义齿中的应用

• 批准号: 08457531
• 负责人: ATSUTA Mitsuru
• 金额: $ 5.57万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08457531/
• 关键词: gold-alloy with age-hardning ability at 37ﾟC; Sofard; adhesion of gold alloy; resin-bonded fixed partial denture; Fittness of RBF partial denture

1) Fabrication of a replicated cast of dentition with a missing areaA metal die was used to fabricate a replicated cast with the same missing area as the one produced last year, and extracted human teeth were embedded in it. The replicated cast with the missing area was fabricated for the maxilla, while a splint replicated cast was fabricated for the mandible ; original and retentive type retainer designs were formed on the abutments.2) Fabrication of a resin-bonded fixed partial denture and bonding to the abutmentsDirect waxing was used to fabricate the resin-bonded fixed partial denture on the abutments. Based on the assumption that recovery of the natural dentition would be accomplished by means of porcelain fused to metal, the pontic metal framework was fabricated from the alloy used for the porcelain fused to metal. This pontic and the gold alloy retainer were joined using the same soldering method as last year. Following sandblasting of the surfaces to be bonded with alumina, met … More al bonding primer was applied to the completed resin-bonded fixed partial denture and splint, and they were bonded to the abutments with an adhesive resin. The resulting fixture was placed in an oven at 37ﾟC and l00% humidity for three days for age-hardening.3) Bonding durability testAfter subjecting the central portion of the pontic of the resin-bonded fixed partial denture to 20,000 cycles of a repeating load of 10 kg, a universal testing device was used to apply peel out force to the embrasure of the fixed partial denture and maximum peel out strength from the abutments was measured. Maximum resistance to load was shown by the retentive type covering a portion of the occlusal surface and by the posterior fixed partial denture. In contrast, the original type anterior fixed partial denture was found to exhibit a major weakening in retentive strength following the repeating load. In conclusion, application of the room temperature age-hardening gold alloy to resin-bonded fixed partial denture was found to be possible for virtually all anticipated cases. Less

1)牙列缺损区复制模型的制作用金属模具制作与去年制作的牙列缺损区相同的复制模型，将离体牙嵌埋其中，上颌制作缺损区复制模型，下颌制作夹板复制模型; 2）树脂粘结固定义齿的制作及粘结方法采用直接上蜡法制作树脂粘结固定义齿。基于自然牙列的恢复将通过烤瓷熔附金属的方式来完成的假设，桥体金属框架由用于烤瓷熔附金属的合金制成。这桥体和金合金保持器连接使用相同的焊接方法，去年。在对要与氧化铝结合的表面进行喷砂处理后， ...更多信息 将Al粘结底漆涂敷到完成的树脂粘结的固定局部义齿和夹板上，并用粘合树脂将它们粘结到基牙上。将得到的固定物放置在37 ℃和100%湿度的烘箱中3天以进行时效硬化。3）粘结耐久性测试在使树脂粘结的固定部分义齿的桥体的中心部分经受10 kg的重复载荷的20，000次循环之后，使用通用测试装置对固定局部义齿的牙嵌口施加剥离力，并测量从基牙的最大剥离强度。最大的负载阻力被证明是由固位型覆盖一部分的咬合面和后固定部分义齿。与此相反，原始类型的前固定局部义齿被发现表现出一个主要的固位强度减弱后，重复负载。总之，室温时效硬化金合金应用于树脂粘结固定局部义齿被认为是可能的，几乎所有预期的情况下。少

项目成果

Yoshida, K.: "Effect of adhesive primers for noble metals on shear bond strengths of resin cements." J Dent. 25. 53-58 (1997)

Yoshida, K.：“贵金属粘合底漆对树脂水泥剪切粘合强度的影响。”

Yoshida, K.: "Shear bond strengths of three resin cements used with three adhesive primers for metal." J Prosthet Dent. 75. 254-261 (1996)

Yoshida, K.：“三种树脂水泥与三种金属粘合底漆一起使用的剪切粘合强度。”

Matsumura,H.: "Effect of acidic primers on bonding between stainless steel and auto-polymerizing methacrylic resins." J Dent. 25. 285-290 (1997)

Matsumura,H.：“酸性底漆对不锈钢和自聚合甲基丙烯酸树脂之间粘合的影响。”

Yoshida,K.: "Effect of adhesive primers for noble metals on shear bond strengths of resin cements." J Dent. 25. 53-58 (1997)

Yoshida,K.：“贵金属粘合底漆对树脂水泥剪切粘合强度的影响。”

Yoshida,K.: "Shear bond strengths of three resin cements used with three adhesive primers for metal." J Prosthet Dent. 75. 254-261 (1996)

Yoshida,K.：“三种树脂水泥与三种金属粘合底漆一起使用的剪切粘合强度。”