Beyron point is located at:

 # Beyron point is located at:

A. 13 mm anterior to posterior margin of tragus on a line from center of tragus to outer canthus 

B. 11 mm anterior to posterior margin of tragus on a line from parallel to and 7 mm below FHP 

C. 10 mm anterior to posterior margin of tragus on a line from center of tragus to outer canthus 

D. 13 mm anterior to tragus on a line from base of tragus to outer canthus 

The correct answer is A.  13 mm anterior to posterior margin of tragus on a line from center of tragus to outer canthus. 

The first step in placing a face bow is to locate the hinge axis on the skin on the each side of the patients face. One frequently recommended method is to position the condyle rods on a line extending from the counter canthus of the eye to the top of the tragus of the ear and approximately 13 mm in front of the external auditory meatus is called Beyron Point.This placement generally locates the rods within 5mm of the true center of the opening axis of the jaws. The imaginary line joining the two Beyron points is an approximate hinge axis.