Abstract
This article described a technique for trimming a die under magnification. However, the microscope is also useful for checking (1) margins of wax patterns for completeness, (2) the internal surfaces of castings for imperfections, bubbles, or retained investment particles which could prevent proper seating of the castings on the dies, (3) for cracks or contamination in dental porcelain as well as porcelain flash on margins; and (4) precision attachment operation after casting or soldering procedures. Attention to detail in these laboratory procedures greatly improves the final fit of dental castings and saves subsequent chairside adjustments and remakes.
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