retention arm


re·ten·tive arm

, retention arma flexible segment of a removable partial denture that engages an undercut on an abutment and is designed to retain the denture.

re·ten·tion arm

(rē-tenshŭn ahrm) Portion of a removable partial denture clasp that engages a retentive area of the tooth and provides resistance to displacement of the prosthesis.
Synonym(s): retentive arm.