EXCHANGEABLE RETAINER HOOK AND MATRIX HOOK FOR REMOVABLE PARTIAL DENTURES

摘要

Exchangeable retainer hook and matrix hook for removable partial dentures, consisting of flexible U-shaped wires of stainless steel having non parallel branches, a circular elliptic cross-section, etc. The cross-section of the matrix hook is 1/10 mm larger than the cross-section of the retainer hook. They can be made by using pliers specifically designed for this process or industrially. They can substitute positively hooks which are currently used owing to their characteristics: they are exchangeable, actuatable, aesthetic and inexpensive.