CIT Prosthetics & Restoration Flashcards

What is the function of a healing abutment (cover screw) placed after stage-one implant surgery?

Answer: To shape the gingival tissue during osseointegration

A healing abutment protrudes through the gingiva during the healing phase to maintain tissue shape and prepare the soft tissue profile before the final restoration.

Which technique is used when insufficient inter-arch space exists for a standard abutment and crown?

Answer: Selecting a low-profile or angled abutment

Low-profile or angled abutments are selected when vertical space is limited, allowing the prosthetic components to fit within the available inter-arch dimension.

What does the term 'passivity of fit' mean in implant prosthetics?

Answer: The prosthesis seats without inducing internal stress on implants

Passivity of fit means the framework or prosthesis seats completely on all implants simultaneously without generating internal stress or distortion.

When torquing an abutment screw, the CIT should use a calibrated torque wrench set to the manufacturer's specification primarily to:

Answer: Prevent screw loosening and fracture

Applying the correct torque value prevents under-tightening (which causes loosening) and over-tightening (which can fracture the screw or damage the implant-abutment connection).

A pink ceramic or gingiva-colored composite added to a prosthesis is primarily used to:

Answer: Simulate lost gingival tissue for esthetic purposes

Pink esthetic materials replace missing gingival volume in cases of bone and soft tissue loss, restoring a natural appearance to the smile.

Which type of implant prosthesis is removable by the patient but supported and retained primarily by implants?

Answer: Implant-supported overdenture

An implant-supported overdenture is a removable prosthesis that clips or snaps onto implants for retention and support, allowing patient removal for cleaning.