Fixed factor according to Hanau is:

 # Fixed factor according to Hanau is:
A. Orientation of occlusal plane
B. Condylar guidance
C. Incisal guidance
D. Compensating curve

The correct answer is B. Condylar guidance.

Increase in the condylar guidance will increase the jaw separation during protrusion. This factor
of balanced occlusion cannot be modified. All the other four factors of occlusion should be modified to compensate the effects of this factor. In patients with a steep condylar guidance, the incisal guidance should be decreased to reduce the amount of jaw separation produced during protrusion and vice versa. But it should be remembered that the incisal guidance cannot be made very steep because it has its own ill effects.

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