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

Each cusp contacts the opposing marginal ridges only

Answer

All cusps are reduced flat to eliminate centric contacts

Answer

Cusps occlude only against opposing cusp tips

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

To establish and maintain the vertical dimension of occlusion

Answer

To maximize the number of centric occlusion contacts on anterior teeth

Answer

To align the dental midline with the facial midline

Question 3

What characterizes a lingualized occlusal scheme used in complete dentures?

Accepted Answer

Maxillary palatal cusps contact mandibular tooth central fossae exclusively

Answer

All denture teeth are set lingual to the residual ridge crest

Answer

Mandibular lingual cusps contact maxillary palatal fossae

Answer

All teeth are arranged with an extreme lingual tilt to aid stability

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

It describes the transverse width of the mandibular dental arch

Answer

It measures the interarch distance for denture base thickness

Answer

It defines the relationship between tooth width and arch perimeter

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

They provide balanced bilateral contacts during all lateral excursions

Answer

They serve as the primary power teeth during heavy chewing

Answer

They provide protrusive guidance but not lateral guidance

Question 6

What is the envelope of function in occlusion?

Accepted Answer

The three-dimensional boundary of all mandibular movements during functional activities

Answer

The maximum mouth-opening measurement of the mandible

Answer

The arc traced only by the mandibular incisors during protrusion

Answer

The range of lateral movement measurable with a mandibular kinesiograph

Question 7

What is vertical dimension of occlusion (VDO)?

Accepted Answer

The measured distance between maxillary and mandibular reference points when teeth are in maximum intercuspation

Answer

The clinical crown length measured from gingival margin to cusp tip

Answer

The vertical depth of the overbite measured from incisal edges

Answer

The height of the posterior occlusal table in a complete denture