الفهرس 
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Abstract
Associated with psychological impairments, Predominantly esthetic
mandibular edentulous ridge has oe + Restoration of
mucl
Edentulism is
functional,
and
atrophic
h attention in the Tecent
* Tucture of the ma
literature shows that Fcc
overdentures are successful in tehabilitating the cas implant Supported
edent
decades due to the challenging anatomic st
st
Scientific evidence from
o A tuloy i c
an increasing success rate. Short dental implants fy US patients with
ave
evade the high-risk ridge augmentation procedures N pied
s. Nor
: metheless, 1
searee researches studying the use of short implant here are
i ’S with mandiby
overdentures. In light of the current trend toward ie
minimally invasive
treatment approaches computer guided implant Placement has received
much aeceptance among clinicians. Similarly, the ability of LLLT to
enhance osseointegration is intensively studied, as there is a plethora of
studies supporting its beneficial effect on bone healing, Therefore, this
study aims to compare clinically and radiographically between two and
four short implants supported mandibular overdenture and evaluate the
effectiveness of LLLT on short implants stability and success,
In the present study, 12 edentulous patients were randomly allocated
into two groups. group I: Patients received two short implant retained
mandibular overdenture and positioner attachments (n=6). group I:
Patients received four short implant assisted mandibular overdenture and
positioner attachments (n=6). Short implants _ were inserted by
stereolithographic surgical guide. Patients received five LLLT sessions
immediately after surgery and every 48 hours. In a split mouth design each
group was further divided into 2 subgroups A and By both received LLLT
by a semi-conductor diode laser with wavelength of 660 nm.