A STUDY OF CLINICAL APPLICATION OF DENTAL CAD/CAM SYSTEM

应用CAD/CAM系统进行临床应用，并对系统进行评价。在拮抗牙的测量中，用专用的黑色咬合材料描述拮抗牙。还有设计皇冠的危险，它稍微突出了模型，高于实践，当这是测量。认为在这一点上，还必须检查测量直接对抗牙齿模型。用于处理的数据，其中CAD软件变得越来越实用，而且，在细节上的设计很容易在10-20分钟的短时间内完成，这是可能的，在15 - 20分钟内自动完成。处理时间几乎在60分钟内完成。而且，这个问题在临床上也可能非常有效，而不需要特别认识到基牙安装条件。1998年，使用基牙的测量数据，连续测量牙冠的厚度以及中间-远中轴面和颊-舌侧轴面的每个面向倾斜角，作为牙科教育的应用。在CAD软件的菜单中，成形后有一个自动检查设计牙冠厚度的功能，首先输入牙冠厚度的参考值，并将此功能应用于此时的基牙数据牙冠外形数据参考值画面，并将成形前的三聚氰胺牙的数据作为牙冠数据进行登记。通过与基牙数据的对比，测量牙冠厚度的缺失量。从宏观上看，通过目前的评价方法，结果判断，对于小范围的缺失，决策困难，以及超过一半的已形成基牙在缺失中不足，也可以自动决策。

The clinical application was carried out using CAD/CAM systems for crown, and the evaluation of the system was examined. In the measurement of antagonistic tooth, the antagonistic tooth was described by the exclusive black occlusion material. And there was the danger which had designed the crown that it slightly stands out from the model and is higher than the practice, when this was measured. It is considered that on this, it must be also examined that the direct antagonistic tooth model is measured. The data for the processing in which that CAD software becomes more and more practical, and that moreover, the design in the detail easily does it in the short time of 10-20 minutes would be possible was automaticaliy made in 15〜20 minutes. The processing time finished within 60 minutes almost. And, the problem might be also clinically very effective without recognizing especialiy, abutment tooth mounting condition. Using measured data of the abutment tooth, thickness of the crown was continuously measured in addition to each facing tilt angle of meslal-distal axial surface and buccal-lingual side axial surface as an application to the dentistry education in 1998. In the menu of the CAD software, after the formation there is a function which automatically checks the thickness of designed crown, and first the reference value of the thickness of the crown is input, and this function is applied this time abutment tooth data crown external form data reference value screen, and the data of melamine tooth In the before formed as a crown data is registered. Deletion quantity of thickness of the crown was measured by the comparison with the abutment tooth data. In the macroscope, by present evaluation method, It was judged as the result, that the decision became also automatically possible on the deletion shortage of small range with the difficult decision and that the over half of formed abutment tooth is insufficient in the deletion.