Which of the Following Is True of Computer-Aiding Machining for Crown

question 18

Multiple Choice

Which of the following is true of computer-aiding machining for crown and bridge techniques?

• A) It is available only for fabrication of porcelain veneers.
• B) No die needs to be poured,and no temporary crown is necessary.
• C) A porous ceramic core is infiltrated with molten glass by capillary action.
• D) Ceramic powder is mixed with a water-based liquid to form a mass that is pressed onto a porous refractory die.

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Definitions:

Shared Homologous Structures

Anatomical features that are similar in different species due to shared ancestry, indicating evolutionary relationships.

Taxa

Groups of one or more populations of organisms classified together, representing categories used in biological taxonomy such as species, genus, or family.

Monophyletic

Pertaining to a group of organisms that consists of all the descendants of a common ancestor.

Polyphyletic

A term describing a group of organisms that are classified together but do not share a recent common ancestor.