Periodontics · single question
All of the following are indications for ultrasonic scalers EXCEPT:
Show answer and explanation
Correct answer: A. Patients with cardiac pacemakers
A) Patients with cardiac pacemakers — CORRECT (this is a contraindication).
Ultrasonic scalers (magnetostrictive type) produce electromagnetic interference that can disrupt older-generation demand-type pacemakers. This is a contraindication. Note: Newer pacemakers are better shielded, but caution is still advised.
B) Heavy calculus: Ultrasonic scalers are highly effective for removal of heavy supragingival and subgingival calculus — an indication.
C) Furcation debridement: Slim ultrasonic tips reach furcations effectively — an indication.
D) Periodontal maintenance: Routine use in supportive periodontal therapy — an indication.
Ultrasonic scalers (magnetostrictive type) produce electromagnetic interference that can disrupt older-generation demand-type pacemakers. This is a contraindication. Note: Newer pacemakers are better shielded, but caution is still advised.
B) Heavy calculus: Ultrasonic scalers are highly effective for removal of heavy supragingival and subgingival calculus — an indication.
C) Furcation debridement: Slim ultrasonic tips reach furcations effectively — an indication.
D) Periodontal maintenance: Routine use in supportive periodontal therapy — an indication.