5 Questions
Define simple, compound, and complex tooth preparations. Provide examples of each type of preparation.
Simple tooth preparations involve only one tooth surface, compound preparations involve two surfaces, and complex preparations involve three or more surfaces. Examples: (1) An occlusal tooth preparation is an 'O'; (2) a preparation involving the mesial and occlusal surfaces is an 'MO'; and (3) a preparation involving the mesial, occlusal, and distal surfaces is an 'MOD'.
What is an internal wall in tooth preparation?
The internal wall is the prepared surface that does not extend to the external tooth surface.
Explain the concept of axial wall in tooth preparation.
The axial wall is the internal wall parallel to the long axis of the tooth.
Describe the pulpal wall (floor) in tooth preparation.
The pulpal wall (floor) is the internal wall that is perpendicular to the long axis of the tooth and occlusal of the pulp.
What is the purpose of the floor (or seat) in tooth preparation?
The floor (or seat) is the prepared wall that is reasonably horizontal and perpendicular to the occlusal forces, providing stabilizing seats for the restoration and increasing the resistance form of the restored tooth against postrestorative fracture.
Test your knowledge of tooth preparation terminology with this quiz. Learn about simple, compound, and complex tooth preparations, and understand the abbreviated descriptions for different types of tooth preparations.
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