Dentistry: Articulators and Jaw Movements
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Questions and Answers

What is the optimal speaking space according to Silverman?

  • 2-3 mm
  • 4-5 mm
  • 1 mm (correct)
  • 1-2 mm

What is the result of a decrease in vertical dimension on the TMJ?

  • No effect
  • Improved function
  • Relaxation
  • Trauma (correct)

What happens to the muscles between the anteriors due to loss of vertical dimension?

  • No change in muscle tone
  • Loss of muscle tone (correct)
  • Increase in muscle tone
  • Muscle paralysis

What is affected by the presence of space during production of certain sounds?

<p>Eustachian tube (B)</p> Signup and view all the answers

What is the consequence of reduced speaking space on the oral cavity?

<p>Loss of space (B)</p> Signup and view all the answers

What is the result of premature contact of the anterior teeth?

<p>Strained facial muscles (C)</p> Signup and view all the answers

What type of articulator requires a CR record, at least 2 lateral records, and some means for controlling the height and inclination of the cusps?

<p>Fully Adjustable (D)</p> Signup and view all the answers

What is the main characteristic of a Simple Hinge articulator?

<p>Can only be opened and closed (D)</p> Signup and view all the answers

What is the condylar guidance angle in a Mean Value articulator?

<p>30 degrees (A)</p> Signup and view all the answers

What is the purpose of a face-bow transfer in a Semi Adjustable articulator?

<p>To record the condylar guidance (C)</p> Signup and view all the answers

What is the formula used to determine the lateral condylar guidance in programming the articulator?

<p>H/8+12 (B)</p> Signup and view all the answers

What is the name of the device used to produce tracings called pantograms?

<p>Pantograph (D)</p> Signup and view all the answers

What is the primary function of an articulator in prosthodontics?

<p>To replicate the natural movements of the temporomandibular joint (B)</p> Signup and view all the answers

Which part of an articulator represents the maxilla and mandible?

<p>Upper and lower arm/member (B)</p> Signup and view all the answers

What is the purpose of the condylar guidance on an articulator?

<p>To represent the slope of the articular eminence (B)</p> Signup and view all the answers

What type of movement is replicated by the translatory movement on an articulator?

<p>Translatory movement forward or protrusive (A)</p> Signup and view all the answers

What is the function of the incisal guide table on an articulator?

<p>To represent the lingual slopes of the maxillary anterior teeth (B)</p> Signup and view all the answers

What is the purpose of the mounting plates on an articulator?

<p>To connect the casts to the articular arm (A)</p> Signup and view all the answers

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