Patent ID: 8500448

Claim:
An articulator, comprising: an upper portion and a lower portion, said upper portion including a first holding part arranged to hold a model of at least a part of an upper dental structure and including a first positioning device, said lower portion including a second holding part arranged to hold a model of at least a part of a lower dental structure and including a second positioning device, said first and second positioning devices enabling adequate positioning of and movability of said models to test the interfit therebetween, by means of having surfaces of said first and second positioning devices in direct contact with each other and further at least one male/female device having at least one element that protrudes from, or near, one of said surfaces and a corresponding recess near or in the other one of said surfaces, wherein said male/female device is in the form of at least two, preferably at least three, separate, discrete elements arranged near or in said surfaces, wherein said upper and lower portion are formed from free form fabrication and in wherein the first and second positioning devices are configured such that when said first and second positioning devices are engaged with each other said upper portion and said lower portion are in a position corresponding to a digital registered position of said upper and lower portion of a dental model; wherein the size and position of said discrete elements and recesses, respectively, are arranged to form a gap that is in the range 0-1 mm, preferably less than 0.5 mm, between side walls of each one of said elements recesses, respectively, when said surfaces are in contact.