METHOD FOR MANUFACTURING REMOVABLE ORTHOPEDIC STRUCTURES WITH INJECTION CASTING USING ADDITIONAL CANALS Russian patent published in 2008 - IPC A61C13/00 A61C13/14 

FIELD: medicine.

SUBSTANCE: method involves preparing wax assembly, fitting it in oral cavity and fixing with wax to model. Blind sprue holes are drilled with dental drill along prosthesis boundary as herring-bone pattern of 2 mm large diameter and 5 mm deep with 10 mm large spaces separating each other at the moment of sprue system preparation in addition to main ingate brought close to future structure base. The canals are superficially covered with wax at the places of maximum thermopolymer shrinkage within the framework of given technology for additionally fixing material at the injection moment. The cell is plastered. Wax is evaporated in traditional way. The cell is fixed in the thermal pressure apparatus and thermopolymer injection casting is carried out and the prosthesis is finished.

EFFECT: reduced material shrinkage; tight adjacency to micro- prosthesis bed relief.

8 dwg