Anterior and posterior controlling factors

By Dr. Vishaal Bhat on Sunday 6 July 2008 with 0 comments

Anterior controlling factors:

1. Incisal guidance: the influence on mandibular movements by the contacting surfaces of the mand and max anterior teeth.

2. Anatomy of incisal guidance: vertical and horizontal overlap

-increase HO leads to a decrease in incisal guidance

-a decrease in HO leads to an increase in incisal guidance

3. Esthetic and phonetics: factors entirely controlled by the operator

-it’s believed that a shallow incisal guidance is more conducive to denture stability than steep guidance

Posterior controlling factors:

1. Cusp height-depends on the type of occlusion we want

2. Compensating curve-curve of Wilson and curve of Spee combined

3. Plane of occlusion

Theilman’s formula: K(balance) = IG x CG / CH x OP x CC

5 limitations and occlusal errors that are produced by the Hanau articulator:

1. Fixed intercondylar distance

2. Straight condylar path vice the curved path in the patient

3. No Fischer angle

4. No individual working condylar motion

5. Arbitrary hinge axis location

REALEFF (resiliency and like effects): compensates for the limitations of the articulator.

Category: Prosthodontics Notes



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