CALCINABLE RING IN THERMOPLASTIC MATERIAL FOR TAKING IMPRINTS WHEN MAKING PERMANENTLY FIXED FALSE TEETH

摘要

This invention relates to the taking of imprints for permanently fixed false teeth. The ring forming the subject matter of the invention is made of calcinable thermoplastic material and is of substantially cylindrical shape with a wall thickness of 0.3 - 0.4 mm and a height of 8 - 12 mm, the ring being provided to suit diameters increasing by 0.5 mm for example over the range 4 to 13 mm approximately. Its cervical edge is indented. To obtain the imprint, this ring is fitted on to the stump of the tooth to be replaced and the imprint or model is then taken directly. This ring avoids the need for preparing a ring in special metal.