Background& Objective: The reduction of alveolar crestal bone density is one of the earlier signs of periimplant
disease and precedes the loss of height of the alveolar crest, because of that early detection of the
small changes in density is impor
tant and lead to the early onset of treatment and increases its success's
percentage.
This study aimed to evaluate the ability of the direct conventional digital method in detection of density
changes around dental implants by the mean value of the gray level of the histogram of the selected area
comparing with radiographic subtraction method.
Isthe radiographic bone density bigger at the area of implant orof tooth?and is
thisdensity changingafter one year of function betweentooth and implant connected with bridge? the aim
of the studyis tostudythe changing of radiographic bone density d
uring one year of radial observation of
the bone area around the tooth and implant connected with bridge with 3 units(rigid or non-rigid
connection) depending on digital periapical radiographic.
To report the results of evaluation of the color digital subtraction technique in
assessing quality and quantity peri-implant bone changes in dental x-ray imaging.
Is the changing of biomechanics between the tooth and implant affected on the
homogeneity of bone surrounding the tooth and implant connected with fixed prosthesis. the aim of the
study is to study the connection of bone area in both sides (mesial&distal) of tooth & implant connected
with bridge(in the form of rigid or non-rigid connection) during one year of radial observation of
radiographic bone density.
