Comparison of detachment forces of two implant overdenture attachment types: effect of detachment speed.

Purpose: To compare detachment (retentive) force for overdenture retainers used with conventional and "mini" implant designs over a range of different detachment (separation) speeds.

Methods: Two dental implant fixtures [Sendax MDI ("mini" dental implant) and Replace Select (conventional dental implant design)] with ball attachments were mounted in brass cylinders. Corresponding attachments were processed into acrylic denture resin blocks and connected to the ball attachments on the implants.