Method for embedding preservation of cast specimen

Abstract

The invention relates to a method for embedding preservation of a cast specimen. The method comprises the following steps: (1) preparation of a mold: measuring the size of a cast specimen to be embedded and making a synthetic glass specimen box with an opened end and a corresponding size as an embedding mold; (2) blending of polyester resin and bubble removal; (3) embedding: slowly pouring the polyester resin without bubbles into the specimen box until the polyester resin totally soaks the upper end of the cast specimen, then placing the specimen box into an enclosed container, filling gaps between the specimen box and the enclosed container with ice cubes, wherein the level of the ice cubes should be lower than the level of resin liquid, connecting the enclosed container with a vacuum pump, carrying out vacuum-pumping, and after bubbles are extracted from the specimen box, taking the specimen box out from the enclosed container and placing the specimen box in an environment with a temperature of 25 DEG C or below for 24 to 48 h; and (4) processing: after complete curing of the polyester resin, rubbing and polishing unwanted edges. According to the invention, the polyester resin used for embedding the cast specimen, so the phenomenon of fracture of cast branches in use of the cast specimen is overcome, and the embedded cast specimen is convenient for transport, carrying and long-term preservation.

Description

technical field [0001] The invention relates to a method for embedding and preserving cast specimens. Background technique [0002] Cast specimens are one of the commonly used specimen forms in human anatomy teaching, clinical, scientific research and science popularization work. Cast specimens play an important role in teaching, scientific research, life museum construction and science popularization exhibitions because of their colorful colors and strong three-dimensional sense . Existing preservation methods for cast specimens include dry preservation and wet preservation. The dry preservation method is directly exposed to the air, which can easily lead to aging and fading of the cast branches; the wet preservation method uses 5% to 10% formalin to preserve the bright colors The three-dimensional effect is strong, but the cast specimens made of self-setting dental tray materials tend to fade over time and lose their original brilliance. Due to the brittleness of the mol...

AI Technical Summary

Problems solved by technology

Crystal glue needs to be embedded in several stages when embedding larger specimens, resulting in stratification after curing. So far, there has been no report on using crystal glue to embed and preserve cast specimens.