Equipment Operation & Maintenance Flashcards
7 cards from real CIT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Equipment Operation & Maintenance flashcards as text
What is the recommended maximum reuse count for a carbide implant drill before mandatory replacement, according to most manufacturers?
Answer: Single use only
Most implant drill manufacturers designate their instruments as single-use only to ensure cutting efficiency, sterility, and predictable osteotomy geometry on each patient.
A surgical implant unit's motor control panel allows selection of 'forward' and 'reverse' rotation. In which scenario is reverse rotation clinically indicated?
Answer: Removing a fractured implant using a reverse-torque device
Reverse rotation (counter-clockwise) is used with reverse-torque instruments and specialized trephines when attempting to remove a fractured implant from the osteotomy.
Which parameter on an implant surgical unit controls the maximum force the motor exerts before automatically stopping to protect bone?
Answer: Maximum torque limit (Ncm)
The maximum torque limit (measured in Ncm) defines the rotational force ceiling; when reached, the motor cuts out to prevent fracturing bone or overtightening the implant.
A technician observes a burning smell during osteotomy preparation. The first corrective action should be to:
Answer: Stop drilling, withdraw the drill, and irrigate the site copiously
A burning smell indicates bone overheating; immediately stopping and withdrawing the drill, then irrigating copiously, limits the extent of potential thermal necrosis.
According to standard infection control protocols, implant surgical instruments should be processed in which sequence?
Answer: Clean → Inspect → Package → Sterilize
The correct instrument reprocessing sequence is Clean (remove bioburden) → Inspect (check for damage) → Package (maintain sterility) → Sterilize, ensuring contamination is removed before sterilization.
What does a Spaulding classification of 'critical' mean when applied to implant surgical instruments?
Answer: Instruments must be sterile because they contact sterile tissue or the vascular system
Under the Spaulding classification, 'critical' items penetrate sterile tissue or the vascular system and must be sterilized (not merely disinfected) before use.
When the implant motor's RPM display reads significantly lower than the set target during drilling, the most likely cause is:
Answer: Excessive load on the bur due to dull drill or dense bone
When an actual RPM falls below the target, the motor is being stalled by mechanical load — most commonly a worn drill generating excessive friction in dense bone.