What is meant by the “retention form” in cavity preparation design?
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Correct answer: Features that resist dislodgement of the restoration along the path of insertion
Retention form involves designing the cavity (walls, grooves, undercuts) so the restoration resists displacement under functional forces, ensuring it stays in place.
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More Cavity Design and Classification questions
- Which class of cavity is most likely to require a matrix band and wedge for proper restoration of proximal contact and contour?
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- Which design principle ensures that the prepared cavity resists displacement or fracture when the restoration is loaded during chewing?
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- Which classification system (by number of surfaces involved) defines a cavity that affects three or more tooth surfaces?
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