The ball attachment abutment is the classic way to attach full dentures to implants and can be equipped with standard or TIMA matrices. The withdrawal force of the standard matrice is controlled with retention rings of different degrees of hardness. The scope of supply includes a soft and a hard retention ring. The retention force of the closed TIMA matrice made of titanium is based on a replaceable spring collar of ultra-durable special spring steel, which can be easily replaced by opening the matrix screws.
