Implant Prosthetics Techniques Flashcards
7 cards from real CDT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Implant Prosthetics Techniques flashcards as text
Which implant connection type uses a conical interface to create a friction-locked, cold-welded seal between the implant and abutment?
Answer: Internal conical (Morse taper)
Internal conical (Morse taper) connections rely on a tapered, friction-fit interface that creates a cold-weld effect, reducing micromovement and microgap.
When fabricating a screw-retained implant crown, the screw access channel is typically sealed with which material after final torquing?
Answer: Composite resin over PTFE tape
PTFE (Teflon) tape is placed over the screw head followed by composite resin to allow future access while sealing the channel.
A patient presents with a failing implant restoration where the screw repeatedly loosens. Which design modification would BEST address this?
Answer: Use an abutment with anti-rotational features and higher torque specification
Anti-rotational abutment features combined with proper torque values prevent screw loosening by distributing occlusal forces more effectively.
In implant prosthetics, what is the primary purpose of a 'healing abutment' (also called a healing cap or cover screw)?
Answer: To shape the peri-implant soft tissue during osseointegration
Healing abutments contour the gingival tissue to create the desired emergence profile before the final abutment is placed.
Which occlusal scheme is most commonly recommended for implant-supported fixed restorations to minimize lateral forces on the implants?
Answer: Canine-guided occlusion
Canine-guided occlusion discludes posterior teeth during lateral excursions, reducing harmful lateral forces transmitted to implants.
A zirconia abutment is being fabricated for an anterior implant. Which consideration is MOST critical for long-term success?
Answer: Using a titanium base (Ti-base) to interface with the implant
A titanium base (Ti-base) provides a reliable metal-to-metal connection at the implant interface, while the zirconia overlayer achieves esthetics without compromising strength at the critical junction.
During the try-in of a multi-unit implant bridge, the framework does not fully seat on one implant. What is the FIRST step the technician should take?
Answer: Check all the impression copings and verify the master cast accuracy
Framework misfit most often originates from an inaccurate master cast; verifying cast accuracy and impression technique is the logical first diagnostic step.