Violation
Which procedure(s) require(s) antibiotic prophylaxis in a patient susceptible to bacterial endocarditis? 1. Impressions for partial dentures. 2. Suture removal. 3. Mandibular block anesthetic injection. 4. Periodontal surgery
(1) and (3)
(4) only
(1) (2) (3)
All of the above
(2) and (4)