18 Questions
What is the primary purpose of the reciprocal clasp arm on the lingual surface of the abutment?
To counteract lateral displacement of the abutment tooth
Which of the following is NOT a requirement of a clasp assembly?
Facial Esthetics
Which of the following is NOT a requirement of a clasp assembly?
Aesthetics
Where should the reciprocal clasp arm be positioned on the lingual surface of the abutment tooth?
Near the junction of the middle and gingival thirds of the tooth
Which component of a clasp assembly contributes the most to its stability?
The reciprocal element
What is the primary function of the retentive clasp arm?
To flex and pass over the height of contour of the abutment tooth
Which type of clasp component is responsible for providing support to the prosthesis?
Vertically oriented hard and soft tissues
Which of the following is the most important requirement of a clasp assembly?
Retention
How does the reciprocal clasp arm help to prevent lateral displacement of the abutment tooth?
By acting as a rigid component that resists lateral movement of the abutment tooth
Which of the following is a characteristic of a wrought-wire clasp?
It is flexible throughout its length
Which two components of a clasp assembly work together to provide reciprocation?
The mesial and distal minor connectors
What is the purpose of the lingual plating (arrow) shown in the image?
To serve as the reciprocal element
What is the primary requirement for the reciprocal element in a dental prosthesis design?
It should contact the abutment tooth at the height of contour
In dental prosthesis design, why is it crucial that the reciprocal element loses contact with the tooth during vertical movement of the prosthesis?
To maintain proper reciprocation
Which element serves as the reciprocal element in a first premolar clasp assembly?
Lingual plating
What design consideration ensures simultaneous contact of the retentive terminus & reciprocal element during prosthesis insertion & removal?
Placing the reciprocal element at the junction of gingival & middle thirds of crown contours
What happens if the retentive terminus contacts the abutment before the reciprocal element does?
Ineffective reciprocation
Why is it important for the axial surface of an abutment to be prepared parallel to the path of insertion & removal?
To optimize reciprocation
Learn about the different types of reciprocal elements used in dental prosthetics, such as cast clasps, lingual plating, and minor connectors. Understand the importance of rigidity and proper placement of the reciprocal element in relation to the abutment tooth.
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