CIT Prosthetics & Restoration Flashcards

Which type of implant-supported restoration replaces a single missing tooth without involving adjacent teeth?

Answer: Single-unit crown

A single-unit crown is an implant-supported restoration that independently replaces one tooth without affecting neighboring teeth.

What is the primary purpose of an emergence profile in implant prosthetics?

Answer: To shape the peri-implant soft tissue contour

The emergence profile shapes the transition from the implant or abutment through the soft tissue, creating a natural-looking gingival contour.

Which impression technique captures the position of the implant in the arch for prosthetic fabrication?

Answer: Open-tray implant-level impression

An open-tray implant-level impression uses impression copings and allows the tray to remain open so copings are retrieved with the impression.

What material is commonly used for CAD/CAM-milled implant abutments due to its strength and biocompatibility?

Answer: Zirconia

Zirconia is widely used for CAD/CAM abutments because it combines excellent biocompatibility with high flexural strength and esthetic tooth-colored appearance.

A screw-retained implant crown differs from a cement-retained crown primarily because it:

Answer: Can be retrieved without cutting the restoration

Screw-retained crowns are accessed via a screw channel and can be removed non-destructively, allowing easy retrieval and maintenance.

Which occlusal scheme is generally recommended for implant-supported full-arch prostheses to distribute forces evenly?

Answer: Bilateral balanced occlusion

Bilateral balanced occlusion distributes masticatory forces across all teeth simultaneously in both centric and eccentric movements, reducing stress on implants in full-arch cases.