of endosseous implant is highly depended on the integration between the implant
surface and the oral tissue which includes both hard and soft tissues.The first
and foremost sign of lost breakdown at the implant tissue interface is
generally seen at crestal region. Therefore, the crestal bone loss around the
implant plays a very vehicle role in determining the success of osseointegrated
healing time and initial loading period the crestal bone loss occur around
dental implants is often more.Various studies and literature references have
demonstrated that stress concentrated around the crestal region during/after
prosthetic loading. It is observed that the density of the alveolar bone
housing may influence the early bone loss around implants. Weber et al studies showed that low density bone had more bone
studies demonstrated that there is a relationship between labial plate
thickness and gingival biotype, mucosal thickness and crestal bone loss around
dental implants.It is also noticed that the dimension and position of biological width formed
around the implant surfaces during early phase of healing may influence the degree
of implant crest module design plays a very crucial role in the formation of
biologic seal around the implant surface.
Platform-switching is a method used to improve
the biological seal and also preserve the crestal bone level around an implant.
Lazzara and Porter,2006 stated that
in platform switching implants inward movement of implant-abutment junction
(IAJ) which leads to the inflammatory cell infiltrate away from the crestal
bone thus reduce the crestal bone loss around dental implants. Because of
horizontal inward movement of implant-abutment union thickens the connective
tissue laterally, which increases blood flow around that area. So a biological
seal establish around dental implants, these changes protect the crestal bone.
conventional implants a high stress around implant’s neck area whereas the
platform switching the stress is distributed inwards towards the central axis
thus improving the distribution of forces and reduces crestal marginal bone
loss after loading.
Berglundh and Lindhe
in 1996 in their animal studies showed that a particular width thickness is
necessary required to establish biologic width around dental implant as well as
they said that if less thickness is present ,crestal bone resorption will occur
upto enough space is establish for both connective tissue and junctional
The gingival biotype may influenced on
formation of biologic width around dental implants. The gingival biotype
contributes significantly to the marginal bone stability around dentition/implant.
Becker W et al in 1997 studies shown
that thin biotype associated with fenestrations and bony dehiscences.
to Wagenberg B et al and Tabata et al at
2010 the gingival biotype, the distance of the implant-abutment
junction(IAJ) from the bone crest, the gingival inflammatory infiltrate cells,
and the diffusion of the forces in the portion of the implant in contact with
the cortical bone are the factors that
plays a major role in the changes of bone height.
demonstrated that implants with thin crestal mucosa more prone to higher
marginal crestal bone loss.
the present study platform switched endosseous implants were placed in patients
with different gingival biotype and to evaluate hard and soft tissue changes
that occur around the dental implant over a period of one year.