Violation
Which of the following is/are desirable in an overdenture abutment? 1. Absence of extensive restorations. 2. Pre-existing endodontic treatment. 3. A 1:1 crown to root ratio. 4. A large band of attached gingiva.
(2) and (4)
(1) (2) (3)
(1) and (3)
(4) only
All of the above.