DENTAL IMPRESSION TRAY (VERSIONS) Russian patent published in 2012 - IPC A61C9/00 

FIELD: medicine.

SUBSTANCE: group of inventions relates to orthopedic dentistry and can be used for obtaining impressions of dentition and alveolar process. Impression tray contains of tray, which corresponds to the shape of dental arch of mandible, which has external and internal boards with vertical slots on walls on their entire length, which contain them with formation of chute for impression mass rigid base with holes on entire surface, rigid platform and handle, attached to external wall of external board. Along lower edge of handle there is peripheral projection, connected with ends with first longitudinal stiffening rib oat the same level with formation of flat surface. Rigid platform is formed below rigid base between external and internal boards and represents lattice structure, formed by longitudinal stiffening ribs in form of external, internal and middle bars, passing along entire length of rigid base, and stiffening ribs in form of bars passing on width of rigid base at a distance from each other on entire base length. Around each hole in rigid base formed is reservoir for collection of pressed out impression mass. Impression tray is provided with stiffening ribs, one of which is made in form of lug on entire upper edge of internal board, the other stiffening rib being located from opposite side of handle in the centre between two additional side boards and is fixed with one end to said external longitudinal stiffening rib at the same level with it, and with its other end being fixed to handle surface. The second version of the group includes impression tray for upper and lower jaws.

EFFECT: obtaining impressions with minimal deformation due to rigidity of impression tray.

2 cl, 11 dwg