Evaluation of low – profile attachments for implant – retained mandibular overdentures in restoring cases with limited interarch space

الملخص EN

The aim of the present study was to evaluate both ZAAG and OT REVERSE / 3 attachments retaining complete mandibular overdentures supported by two Legacy implants regarding both periimplant bone and residual ridge resorpotion and maintenance complications in patients with limited interarch space during a 2 year follow- up period.

The two implants were placed in the canine region.

Mandibular overdentures were provided for 12 edentulous male patients.

Subjects were divided equally into ZAAG and OT REVERSE / 3 groups.

Once patients were comfortable, they were placed on a one week, 6, 12 and 24 months follow -up periods.

Marginal periimplant bone levels and distal residual ridge height were monitored on intraoral radiographs using long cone paralleling technique.

Frequency of maintenance complications were also detected during the follow-up periods.

A significant decrease in periimplant bone loss was recorded in favor to the OT REVERSE / 3 group.

However a significant decrease in vertical residual bone loss was recorded in favor to the ZAAG group.

It could be concluded that although mandibular implant–retained overdentures with OT REVERSE /3 attachments are an acceptable treatment option for edentulous patients with limited interarch space, routine maintenance is required to ensure successful long - term outcomes.