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It is the most simple and versatile clasp (clasp of choice in tooth-borne cases). Clasp assembly has one retentive arm opposed by a reciprocal arm originating from the rest. The retentive arm begins above the height of contour, and curves and tapers to its terminal tip, in the gingival 1/3 of the
36:. The bracing arm is in the middle 1/3 of the tooth, and is broader occluso-gingivally, does not taper and is either entirely above the height of contour or completely on a prepared guiding plane – it should never be designed into an undercut, as it is a rigid element.
24:. Named after its inventor, Polk E. Akers, this suprabulge clasp consists of a rest, a guide plate, a retentive arm and a reciprocal arm. Akers' clasps, as a rule, face away from an
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area. Should they face the edentulous area, they are termed reverse Akers' clasps.
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