Circumferential Clasp Approach — NDEB AFK MCQ
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Correct answer: B — Circumferential (Akers) clasp
The circumferential (Akers) clasp approaches the retentive undercut from an occlusal (supabulge) direction — the clasp arm originates from the body of the clasp near the occlusal rest and traverses the tooth surface from above the survey line downward into the undercut. In contrast, the I-bar and other bar-type clasps approach the undercut from a gingival (infabulge) direction, contacting only the cervical third of the tooth. Circumferential clasps are preferred when the survey line is at the junction of the middle and occlusal thirds.
Reference: Carr – McCracken's Removable Partial Prosthodontics, 13th ed., 2015