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a clasp or attachment applied to an abutment tooth for the purpose of maintaining a removable appliance in position.
Farlex Partner Medical Dictionary © Farlex 2012
di·rect re·tain·er(di-rekt rĕ-tānĕr)
Clasp or attachment applied to an abutment tooth to keep a removable appliance in position.
Medical Dictionary for the Dental Professions © Farlex 2012