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1.crest module:- the crest module of an implant is
that portion designed to retain the prosthetic component.
It represents the transition zone from implant body design
to transosteal region of the implant at the crest of the ridge.
Designs that incorporate a microscopic component into the
implant bodies by coatings with hydroxyapatite, at the superior aspect of the
The collar allows functional remodeling to occur to a more
consistent region on implant.
It suggests that crestal modeling is limited to the smooth
region of the implant.
At the time of insertion of the implant body or stage 1
surgery, a first stage cover is placed into the top of implant to prevent bone,
soft tissue, or debris from invading the abutment connection area during
Abutment :- is the portion of the implant that
supports and\or retains a prosthesis or implant super structure.
Three categories of implant abutments are
3.abutment for attachment uses an attachment device to retain a
HYGIENE COVER SCREW:-place over the abutment to prevent
debris and calculus from invading the internal portion of abutment during
TRANSFER COPING:-transfer coping is used to position
an analog in an impression and defined by the portion of implant it transfers
to the master cast, either the implant body transfer coping or the abutment
After a prescribed healing period sufficient to allow a
supporting interface to develop, the second stage may be performed to expose
the implant and\or attach a transepithelial portion.
This Tranepithelial portion is termed a permucosal
extension because it extends the implant above the soft tissue and results in
development of permucosal seal around the implant.
IMPLANT ANALOG:-used in the fabrication of the master
cast to replicate the retentive portion of the implant body or abutment.
After the master impression is obtained, the corresponding
analog is attached to the transfer coping and assembly poured in the die stone
Usually designed to fit the implant abutment for screw
retention and serve as connection between the implant and prosthesis.
The macroscopic body design can be cylinder, threaded,
plateaued, perforated, solid, hollow and vented.
Their surface can be smooth, coated, non coated, or
They are available in submergible or non submergible
There are three primary basic designs of the implant.
1.CYLINDER- this form of implants depend on the coating to provide
microscopic retention and/or bonding to bone and are usually pushed or tapped
into the bone.
2.SCREW- This form of implants are Threaded
into a bone site and have a microscopic retentive elements for initial bone
Three basic screw thread geometries are available:-
A) V- thread.
B) Buttress thread.
C)Square thread design.
3.combination of root forms are available:-cylinder and
screw- this root form design may also benefit from microscopic retention to
bone by addition of coatings.
Different smaller or larger implant diameters for use in
limited anatomic situations or surgical complications.
The functional area of threaded implant is greater
cylinder implant by a minimum of 30% and may exceed 500%, depending on the
The cylinder implant design system offer the advantage of
ease placement, even in difficult access locations.
Cylinder implants are essentially smooth sided and bullet
shaped implants that require a bio active or increased surface area coatings
for retention in the bone.
Smooth sided tapered implants allows for a component of
compressive loads to deliver to the bone to implant interface.
The larger the taper the greater the compressive loads
deliver to the implant interface.
But unfortunately the taper cannot be more than 30 degrees