Cusp-Fossa Relationship
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each of the black spaces below before clicking
on it to display the answer.
Help!
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| Maxillary Functional Cusp | Lingual
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| Mandibular Functional Cusp | Buccal
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| Definition of a Functional Cusp | Cusp that lands in a functional fossa
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| What % of the population has ideal Cusp-Fossa relationships? What type of relationship does most of the population have? | 5%, Rest are cusp-marginal ridge
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| 2 Reasons that Cusp-Fossa is ideal | 1) Occlusal forces are near the center of the tooth 2) Less food impaction
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| What are the two other names for the Functional cusp? | 1. Working 2. Supporting
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| What is the other name for the non-Functional cusp? | Guiding cusp
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| What does FOA stand for? | Functional Outer Aspect
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| What is the FOA? | The outer 1-2 mm of the supporting cusp that makes contact with the guiding inclines of the guiding cusps of the opposing teeth when in occlusion
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| Where are the FOA contacts - A, B, and/or C? | A and C
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| What is doing the work in a cusp-fossa relationship, the tip or the ridges? | Cusp Ridges!
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| What is disclusion? | The prevention of contact on either working or non-working sides during excursive movement
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| Does wax shrink or expand? | Shrinks!
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