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Removable Prosthodontics Dental Materials Part III Quiz

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Questions and Answers

What is the purpose of placing firm pressure on the end of the nasion relator before tightening the thumbscrew?

To measure the intercondylar width
To ensure stability of the bite registration (correct)
To adjust the condylar inclination
To unlock the centric latch

What is the permanent non-adjustable intercondylar width of the 2200 series instrument?

120 mm
100 mm
130 mm
110 mm (correct)

What is the purpose of adjusting the toggles using a hex driver or a T-screw?

To set the Bennett angle
To adjust the condylar inclination
To fine-tune intercondylar width (correct)
To tighten the facebow

What is the function of the centric lock in an articulator?

Hold condyles in a retruded position (A) Signup and view all the answers

What does Bennett angle refer to in terms of mandibular movement?

Angle formed during lateral mandibular movement (C) Signup and view all the answers

Why is it sometimes difficult to tighten the toggles while the facebow is on a patient's head?

Because of limited space for maneuvering (C) Signup and view all the answers

What is the purpose of using an anterior reference point in a facebow?

To enable duplication of the recorded position on the articulator (D) Signup and view all the answers

What is the main advantage of using a kinematic facebow over an arbitrary facebow?

Enables the clinician to adjust the patient's vertical dimension of occlusion accurately (C) Signup and view all the answers

How does a clinician determine the hinge axis of the mandible using a kinematic facebow?

By observing the movement of the kinematic facebow styli positioned close to the TMJ (C) Signup and view all the answers

What is the purpose of heating a sheet of baseplate wax in hot water when using a facebow?

To adapt the wax to the bitefork uniformly (A) Signup and view all the answers

What should be done after obtaining shallow impressions of only the cusp tips with the wax-covered bitefork?

Allow the patient to close into the wax lightly (B) Signup and view all the answers

What is a key feature of pantograph when used with a fully adjustable articulator?

Determines the hinge axis of the mandible with high accuracy (C) Signup and view all the answers

Which type of denture prosthetic teeth is the material of choice for single dentures opposing natural dentitions?

Composite resin denture teeth (C) Signup and view all the answers

What is a disadvantage of mechanically attaching porcelain denture teeth to resin bases?

Limits the use of the teeth in partial denture fabrication (A) Signup and view all the answers

Why are porcelain denture teeth not indicated in limited interarch spaces?

Difficulty reshaping cervical areas (A) Signup and view all the answers

How do porcelain teeth differ from resin teeth in terms of weight?

Porcelain teeth are heavier (D) Signup and view all the answers

Which property makes porcelain teeth more difficult to grind for occlusal adjustments?

Surface glaze loss (B) Signup and view all the answers

What effect does combining posterior resin teeth with anterior porcelain teeth have on the prostheses?

Creates destructive occlusal forces in the anterior region (C) Signup and view all the answers

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