الفهرس 
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Abstract
Summary
This study was performed to compare the effect of one piece
implant locator versus two pieces implant and locator on the marginal
bone loss in implant supported overdenture.
Twelve completely edentulous male patients were selected from
the outpatient clinic of Removable Prosthodontics Department, Faculty of
Dentistry, Ain Shams University.
Patients sharing in this study were randomly divided into two equal
groups:
Group I: Six patients in this group received implant supported mandibular
overdenture retained by two pieces implant and locator attachment that
were be placed in two stages surgical protocol.
Group II: Six patients in this group received implant supported
mandibular overdenture retained by one piece implant locator that were
placed in one stage surgical protocol.
All cases have been evaluated for bone height changes using
Digora system and pocket depth changes around the implants using
graduated periodontal probe at 0,6,12 months after loading.
Data were collected, tabulated and statistically analyzed to
compare between the two groups.