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The International Journal of Oral & Maxillofacial Implants



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Int J Oral Maxillofac Implants 13 (1998), No. 6     15. Dec. 1998
Int J Oral Maxillofac Implants 13 (1998), No. 6  (15.12.1998)

Page 851-856

Mandibular Implant-Retained Overdenture: A Clinical Trial of Two Anchorage Systems
Menicucci, Giulio / Lorenzetti, Massimo / Pera, Paolo / Preti, Giulio
This in-vivo study aimed to investigate the load on the working-side implant and on the edentulous distal mucosa of the nonworking side in a mandibular implant-retained overdenture (MIR-OVD) anchored to 2 implants by either a ball- or a clips-and-bar attachment. Three female patients were provided with duplicate dentures anchored in the 2 ways. Strain on the implant was investigated using a strain-gauged abutment, and load on the mucosa was measured using a suitably placed load cell. Ball attachments appeared to provide greater stability to the MIR-OVD, since load was more evenly distributed onto the distal mucosa of both sides. When the MIR-OVD was bar-anchored, axial load on the working-side abutment increased.

Keywords: ball attachments, bar, implants, load, overdenture, strain gauges