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Related to direct retainer: indirect retainer, indirect retention
a clasp or attachment applied to an abutment tooth for the purpose of maintaining a removable appliance in position.
a clasp, attachment, or assembly fastened to an abutment tooth for the purpose of maintaining a removable restoration in its planned position in relation to oral structures. See also precision rest.
di·rect re·tain·er(di-rekt rĕ-tānĕr)
Clasp or attachment applied to an abutment tooth to keep a removable appliance in position.