All-ceramic crown prepared by a new method

我们设计了一种全陶瓷冠的覆膜生产方法，可以在很短的时间内降低成本。但是，仍然需要改进才能使它广泛使用。4步堆积最适合生产厚度为0.5 mm的顶部。结果表明，粗粒与细粒混合比例为40:50 （wt%）时，其三点抗弯强度显著提高，达到183 ~ 211.3 MPa；基牙预备设计对牙顶的适宜性没有影响。建议在干燥过程中使用热风来提高适应性。即使将玻璃浸润烧制时间缩短30分钟，玻璃浸润也足够。

We devised a production method for copings of all-ceramic crowns, which is possible at low cost and in a very short time. However, improvement was still necessary to make it widely available. A 4-step build up was most suitable for producing a coping of 0.5 mm in thickness. We found that the 3-point bending strength of the coping markedly increased to 183-211.3 MPa, and the highest strength was achieved when the mixing ratio of rough to fine grains was 40:50 (wt%). The fitness of coping did not have the influence by the preparation design of abutment tooth. It was suggested that fitness was improved by using a hot blast in a dry process. Even if glass infiltration firing time was shortened for 30 minutes, the glass infiltrated it enough.