Pameijer C H
Scan Electron Microsc. 1979(2):571-4.
New materials and new techniques have enabled the fabrication of more reliable and more accurate replicas. Not only is the reproduction of detail of importance, but the expertise required from the operator and the time involved to produce a replica are considered key factors. For various reasons a reliable and reproducible replication technique for scanning electron microscopy offers many advantages. Recently a new dental precision impression material has been introduced, which in combination with low viscosity resins has produced superior results over other techniques. This combination processed by means of a centrifugal casting machine has produced replicas which could easily be compared to a standard test die at magnifications up to 3000 X. More in depth testing will have to be performed to establish whether these materials can be universally applied to a broad spectrum of replication problems. The combination Reprosil/Spurr low viscosity imbedding medium yielded replicas of high quality which can be made with simple equipment and without possessing special skills. Centrifugation of the positive replication material into the negative impression virtually eliminated the entrapment of airbubbles.
新材料和新技术已能够制造出更可靠、更精确的复制品。不仅细节的再现很重要，而且操作员所需的专业技能以及制作复制品所花费的时间也被视为关键因素。出于各种原因，一种用于扫描电子显微镜的可靠且可重复的复制技术具有许多优势。最近引入了一种新型牙科精密印模材料，它与低粘度树脂相结合，比其他技术产生了更优异的效果。通过离心铸造机对这种组合进行处理，制作出的复制品在放大倍数高达3000倍时，能够轻松与标准测试模具进行比较。还需要进行更深入的测试，以确定这些材料是否能普遍应用于广泛的复制问题。Reprosil/Spurr低粘度包埋介质的组合产生了高质量的复制品，这些复制品可以用简单的设备制作，且无需特殊技能。将正性复制材料离心到阴性印模中几乎消除了气泡的截留。
