h. Articulators (ARTICULATOR, DENTAL). An articulator is a mechanical
device that represents the temporomandibular joints and jaw members to which
maxillary and mandibular casts may be attached. Articulators are classed as
nonadjustable and adjustable.
(1) Nonadjustable. Nonadjustable articulators (figure 5-6) permit opening,
closing, protrusive and lateral movements at a fixed, average inclination. For example:
Stephan Model Plainline.
Figure 5-6. Nonadjustable articulators.
(2) Adjustable. Adjustable articulators permit opening, closing movements
and adjustment of condylar elements that can be set to accept a protrusive record. For
example: Hanau Model H (figure 5-7).
Figure 5-7. Adjustable (Hanau) articulator.