BOND CHARACTERISTICS OF PORCELAIN FUSED TO MILLED TITANIUM
BOND CHARACTERISTICS OF PORCELAIN FUSED TO MILLED TITANIUM
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DOI：
10.1016/0109-5641(94)90054-x
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发表时间：
1994-03-01
期刊：
影响因子：
5
通讯作者：
LAUTENSCHLAGER, EP
中科院分区：
文献类型：
--
作者：
GILBERT, JL;COVEY, DA;LAUTENSCHLAGER, EP
目标。最近介绍了一种粘接剂，用于制备研磨钛涂层表面，用于与低熔合牙科瓷的粘接。本研究通过比较三种材料组合试样的剪切强度和三点弯曲强度来评估粘结剂的有效性：1)带粘结剂的铣削钛/瓷，2)不带粘结剂的相同铣削钛/瓷，3)铸造高钯/常规瓷。由直径6毫米、长度8毫米的瓷筒组成的剪切试样被烧制到直径6毫米、长度13毫米的金属筒的两端。用25 × 3 × 0.5 mm金属棒制成的三点弯曲试样在金属棒的中心贴面8 × 3 × 1 mm的瓷。试件在万能试验机上进行剪切和弯曲试验。数据分析采用单因素方差分析和Newman-Kuels事后检验（p = 0.05）。当使用钛结合剂时，瓷对钛的结合强度略大于瓷对高钯的结合强度，但有统计学意义。剪切和三点弯曲试验的结果是相同的。在不添加粘结剂的情况下，瓷对钛的抗剪强度明显低于添加了粘结剂和高钯基团的瓷的抗剪强度。结合剂的使用提高了瓷熔磨钛的结合强度。
Objectives. A bonding agent has recently been introduced that prepares the surface of milled titanium copings for bonding to low fusing dental porcelains. This study evaluated the effectiveness of the bonding agent by comparing the shear and three-point bending strength of specimens made with three combinations of materials: 1) milled titanium/porcelain with bonding agent, 2) the same milled titanium/porcelain without bonding agent, and 3) cast high palladium/conventional porcelain.Methods. Shear specimens consisting of porcelain cylinders 6 mm in diameter and 8 mm in length were fired to the ends of metal cylinders 6 mm in diameter and 13 mm in length. Three-point bend specimens made of 25 x 3 x 0.5 mm metal bars were veneered with 8 x 3 x 1 mm of porcelain in the bar's center. Specimens were tested in shear and bending in a universal testing machine. The data were analyzed using one-way ANOVA and Newman-Kuels post hoc tests (p = 0.05).Results. When a titanium bonding agent was used, porcelain to titanium bond strength was slightly but statistically significantly greater than the porcelain to high palladium bond strength. The result was the same when measured by both shear and three-point bending tests. Without the bonding agent, the shear strength of porcelain to titanium was significantly lower than that of the bonding agent and high palladium groups.Significance. The use of a bonding agent improves the bond strength of porcelain-fused-to-milled titanium.