Dentist Markings on the Bite Registration Block
Midline (middle of face)
This line is not necessarily identical to the upper and lower lip tendons
or the midline of the model.
This determines the width of the upper anteriors, also where the tips
of the canines are to be positioned. Also, their positioning can be
determined on the basis of the corners of the mouth or a vertical
extension of the outer nasal wings.
This is decisive for the length of the upper anteriors. The tooth necks
should normally be above this line.
It follows the upper edge of the lower wax bite rim (ie: between the
lower incisal edges in the anterior area and the distobuccal cusps of
the lower second molar). It intersects the midline which is the fix
point for the incisal pin, and runs parallel with Campers line.