Objectives: The aim of the present study was to report on the survival of dental implants placed in conjunction with nasal floor elevation.

Objectives: To compare the biomechanical fixation and histomorphometric parameters between twoimplant surfaces: non-washed resorbable blasting media (NWRBM) and alumina-blasted/acid-etched(AB/AE), in a dog model.

Gaps and hollow spaces at the implant abutment interface will act as a bacterial reservoirwhich may cause peri implantitis . Hence, the sealing ability of O-ring [an addition polysiloxane] and GapSeal [anantibacterial sealing gel] was evaluated .A total of 45 identical implant systems of ADIN companywere taken and divided into 3 groups with 15 implants in each group. The group labeled U consistedof unsealed implants; the group O consisted of implants sealed with O-rings and the group G implantswere sealed with GapSeal gel.

The reliability and failure modes of molar crowns supported by three different implant-supported designs were tested according to the following groups: group 1, one standard-diameter implant (3.75mm); group 2, one narrow-diameter implant (3mm); and group 3, two-narrow diameter implants (3mm).