Rotational Mechanism - Planmeca Proline CC Technical Manual

Chapter I - FUNCTIONAL DESCRIPTION
1.1

Rotational mechanism

I-2 Planmeca Proline CC panoramic x-ray
The rotating mechanism is designed so that the x-ray beam passes the patient's teeth and tem-
poro-mandibular joints in an optimal way throughout the excursion.
The geometry of the driving groove of the block (Fig. 3, 4) is as follows. The groove has the
shape of a curve of a circle symmetrically to both directions from the center the driving groove to
± 25° turning angle (point A being the center of the circle). From ± 25° turning angle to ± 85° turn-
ing angle, the radius of the shape of the groove varies and reminds of an evolvent curve. There-
after the groove follows the tangent of the curve.
Figure 1
Technical Manual