Level of bone crest surrounding the implant is of utmost significance to
determine osseointegrated implant success, as a preservation of marginal
bone height is highly important for the long-term dental implant.There
are multiple factors which may lead to crestal bone loss. These include
bone volume, biological width, soft-tissue biotype, a condition of the
adjacent teeth, implant design, implant dimensions, abutment design,
augmentation procedures, implant insertion depth, time of loading, time
of restoration, suturing techniques and patient compliance.therefore, An
understanding of the etiology of crestal bone loss is very important for
the implant success. There are various approaches to preserve the
crestal bone for the long-term success of implant.