By a clinical case to go into many
teeth of the incisal, a dentist surely makes a temporary crown. When
a technician makes a prosthesis, the study model is necessary by all
means.
It transfers the anterior guidance from the study model. But, the
temporary crown made in the mouth is very vague. A patient's
mandibular position and the mandibular movement change to the low one
to the low part.
But, even if a patient can recognize that a mandibular position is
high or low, it is common that it can't be recognized to the
direction of the mandibular movement.Therefore, the anterior guidance
given to it by a temporary crown lacks reliability very much.
But, the problem is very much dissolved by adjusting it on the
Articulator.
1) First, a study model is mounted in the Articulator. On that occasion, it becomes a premise that it mounts with the environment that a working model is the same as the study model. An occlusion rim in the dentate arch is effective in the case as well. By using the occlusion rim in the dentate Arch used when working model mounted, you can mount a study model.
2) Next time, it has the check of the protrusive movement.
On that occasion, return a left-right Bennet angle to the zero. In
other words, when a protrusive movement was done, try so that you can
move it straight only in the protrusion. Then, the error adjusted in
the mouth of the patient is understood on the Articulator.
A patient's mandibular movement shifts in the low direction. It is
functioning in the angle. Therefore, adjust it in accordance with the
low angle. In other words, adjust it until all incisal teeth touch
each other equally.
Make it an angle of sagittal incisal path that the guide of the
protrusive movement which it could get as a result.
Even when you make custom incisal table, do this work by all
means.
If it doesn't do so, the anterior guidance of the prosthesis which
you made has the possibility that it becomes a much severer angle
than it of the provisional restoration.
3) Next time, you do the adjustment of the lateral incisal
path. On that occasion, if there is a check bite, you return an angle
of lateral condyle path to the value. If it is not here, you will
make an angle of lateral condyle path a mean.
If you finish the adjustment of the angle of lateral condyle path , you move an Articulator to the position of the canine tooth reproduced by the provisional restoration, and adjust an angle of lateral incisal path.
The above is how to adjust the anterior guidance which the model for the diagnosis of the provisional restoration was used for.
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