CDT Occlusion & Articulation 3

Question 1

What defines a cusp-to-fossa occlusal arrangement?

Accepted Answer

Each supporting cusp is directed into the opposing central fossa

Answer

In cusp-to-fossa occlusion, the supporting cusps are directed into the opposing central fossae, creating stable tripod centric contacts and favorable load distribution along the long axis of teeth.

Question 2

What is the primary function of anterior guidance in fixed prosthodontic restorations?

Accepted Answer

To disclude posterior teeth during eccentric mandibular movements

Answer

Anterior guidance causes immediate disclusion (separation) of posterior teeth during all eccentric movements, protecting posterior restorations from destructive lateral forces.

Question 3

What characterizes a lingualized occlusal scheme used in complete dentures?

Accepted Answer

Maxillary palatal cusps contact mandibular tooth central fossae exclusively

Answer

Lingualized occlusion positions only the maxillary palatal cusps to contact the mandibular central fossae, combining balanced occlusion stability with improved esthetics and chewing efficiency.

Question 4

What is the clinical significance of the curve of Spee in dental prosthetics?

Accepted Answer

It is the anteroposterior curvature of the mandibular occlusal plane from canine to molar

Answer

The curve of Spee is the anteroposterior curvature of the mandibular occlusal plane, incorporated into complete denture tooth arrangements to facilitate balanced occlusion.

Question 5

In canine-protected (mutually protected) articulation, what is the specific role of the canine teeth?

Accepted Answer

They immediately disclude all posterior teeth during lateral excursion

Answer

In canine-protected articulation, the canines bear lateral forces and their steep guidance immediately separates all posterior teeth during any lateral excursion, protecting posterior restorations.

(CDT) Certified Dental Technicians Practice Test

(CDT) Certified Dental Technicians Practice Test

CDT Occlusion & Articulation 3