الفهرس 
Osseointegration and Dental implant
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Abstract
Summary and Conclusion
Summary:
The stress produced during the insertion of implant-supported
prosthesis and the masticatory function directly transmitted to the bone so
treatment plans should provide methods to reduce the stress on the bone
implant junction and decrease the initial bone loss. there were several
methods to reduce these stresses on of them was using an abutment made of
a flexible material that deforms within its elastic limit and absorbing a part of
the load to reduce the stresses.
This study was planned to evaluate the effect of BIOHPP implant
abutment material on the bone implant contact and transmission of stresses
to bone in comparison to titanium and zirconia abutments using both
experimental animal work and confirmed by finite element analysis work.
In the experimental animal part fifteen adult male dogs were used then
medicated properly for starting the procedure of extraction of the third
premolar tooth after taking a preoperative x-ray film to examine the roots
before extraction. A root form titanium implant fixture inserted in the
extraction socket immediately after extraction then left for three months to
osteointegrate.
The drilling sequence was done following the manufacturer
instructions for the implant. Then Ti abutments were screwed on the implant
fixtures of five dogs (control group I) while the zirconia and BIOHPP
abutments were screwed in the other ten dogs (five dogs for each one) a
confirmatory x-ray film was taken. Secondary impression was taken to
fabricate porcelain fused to metal crowns to allow the dogs to eat on it for
other three months.