SETUP OF THE LOWER ANTERIOR TEETH
The two central lower incisors, 31 and 41, touch the incisor pointer with their mesial edge at the level of the rubber of plane of occlusion. Their vestibular surfaces touch the front edge of the silicone key to reflect the shape of the lower lip support as determined on the patient using the esthetic control template (Figs. 13, 14, 15).
Overbite and overjet depend on several factors. A well-known rule of thumb is that the overbite and the sagittal step are 1 mm each. Rules of thumb imply a solution based on average values that may be correct, but do not have to be. Here, only the dentist can determine correct physiological information relating to the case on the patient and provide this to the laboratory in the form of the esthetic control template and the silicone key fabricated there (Figs. 16, 17).
Position teeth 42 and 32 with their incisal edges traversing the rubber band and their vestibular surfaces touching the silicone key. The tips of the lower canines, teeth 33 and 43, protrude about 0.5 mm above the rubber band. Their axis is slightly inclined mesially, their mostly distal cutting edge contour is aligned with the static lines.
Fig. 13, 14, 15 and 17: Setup of teeth 31 and 41
Fig. 16: Overjet reconstructed according to the silicone key