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Dental Crown Terminologies

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Questions and Answers

What is the purpose of a bevel on the functional cusps of posterior teeth and incisal edges of anterior teeth?

To reduce the amount of tooth preparation required

To create a path of insertion for the restoration

To create parallelism between abutments

To prevent fracture and chipping off of the restoration as well as the supporting tooth or abutment during masticatory load (correct)

What is the purpose of parallelism in fixed bridge preparation?

To create a smooth transition between the abutment teeth

To create a single path of insertion for the restoration (correct)

To prevent excessive tooth reduction

To ensure the restoration fits properly on the prepared teeth

What is the purpose of a finish line guiding stone/bur in tooth preparation?

To guide the creation of the finish line (correct)

To shape the tooth to the desired form

To polish the prepared tooth surface

To create the depth of tooth reduction

What is the recommended amount of occlusal/incisal reduction for tooth preparation?

1.5-2 mm Signup and view all the answers

What is the recommended amount of proximal reduction for tooth preparation?

1-1.5 mm Signup and view all the answers

What is the purpose of rounding off line angles and point angles during tooth preparation?

To create a smooth transition between surfaces Signup and view all the answers

What is the definition of an ARTIFICIAL CROWN?

A cemented extracoronal restoration that covers the outer surface of the clinical crown Signup and view all the answers

What is the difference between the CLINICAL CROWN and the ANATOMICAL CROWN?

The clinical crown is covered by enamel and exposed to oral fluid, while the anatomical crown is covered by the enamel but extends to the part that is covered by the gingiva. Signup and view all the answers

What is the definition of a FULL / COMPLETE VENEER CROWN?

An extracoronal restoration that covers all of the clinical crown Signup and view all the answers

Which of the following is NOT a type of PARTIAL VENEER CROWN?

Full / complete veneer crown Signup and view all the answers

What is the definition of a FIXED PARTIAL DENTURE?

A prosthetic appliance permanently attached to remaining teeth that replaces one or more missing teeth Signup and view all the answers

What is the definition of an ABUTMENT?

A natural tooth serving as an attachment for a fixed partial denture Signup and view all the answers