retention pin

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re·ten·tion pin

(rē-tenshŭn pin)
One or more metal pins projecting from a cast restoration to enhance retention by being inserted in one or more parallel holes in dentin.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
The entire unit is easily removed for cleaning by pushing out its two retention pins in the side of the receiver.
The pipes feature either one or two retention pins that snap into PC boards up to 0.125 in.