the lower jaw and oberkieferbogendehnschraube for transverse and sagittale enlargement in the lower jaw and the frontzahnbogens maxilla

摘要

HOLDER (FOR TOOTH) WITH POLYCARBONATE PARTS Lower and upper jaw bridge expanding screw for traverse and sagittal dilation of the upper or lower jaw. Usual apparatus is made of a precise metal cylinder which is very expensive. This expander can be injection moulded in a plastic and can be made more lingual and much thinner. The screw spindle and the bow-shaped guiding band (2) are held together on both sides of the spindle head (1a) by the traverse carriers (3). These traverse carriers are manufactured in one piece of a plastic, specifically polycarbonate. This adheres itself rigidly to the acrylic expanding plate whether the process is hot or cold.