Until a few decades back when natural
tooth was lost, it was replaced by a removable partial
Denture, or a fixed prosthesis, Each of these treatment
options had their own disadvantages, With the advancement
of technology and research, dentistry today has a better
option for the replacement of a natural tooth - with
dental implants. Dental implant is an artificial substitute
to replace the root portion of teeth and put into the
bone and gums of mouth. Replacement teeth are then fixed
on to these new roots. Dental implants allow people
who are with missing teeth to be able to smile, speak
and chew well and comfortably.
Types of Implants:
There are three types of implants
1) Endosseous Implant:
These implants are usually shaped like a screw or
cylinder. They are placed within the jaw bone.
2) Subperiosteal Implants:
These Implants consist of mental frame work that attaches
on top of the jaw bone but underneath the gum tissue.
3) Transosteal Implant:
These implants are either a metal pin or a U- shaped
frame that passes through the jaw bone and the gum
tissue, in to the mouth.
Implants are made from metals and alloys such as Titanium,
Titanium-Aluminium-V alloy, Chromium-cobalt-mobedium
alloy, ceramics.
Advantage of Implant over traditional prosthesis
The goal of modern dentistry is to return patientas
to oral health in a predictable fashion. The partial
and complete edentulous patient may be unable to recover
normal function, esthetics, comfort, or speech with
a traditional removable prosthesis.
The patient’s function when wearing a denture
may be reduced to 60% compared with that formerly experienced
with natural dentition, however, an implant prosthesis
may return the function to near normal limits. The esthetics
of the edentulous patient also is affected because of
bone atrophy continued resorption leads to irreversible
facial changes. An implant stimulates the bone and maintains
its dimension in a manner similar to healthy natural
teeth. As a result, the facial features are not compromised
by lack of support. In addition, implant supported restorations
are positioned in relation to esthetics, function and
speech, not in neutral zones of soft tissue support.
The soft tissues of the edentulous patient are tender
form the effects of thinning mucosa decreased salivary
flow, and unstable or unretentive prosthesis.
The implant retained restoration does not require soft
tissue support and improves oral comfort. Speech and
function are compromised with prostheses form the supporting
structures during use. The tongue and peri-oral musculature
may be compromised to limit the movement of the mandibular
prosthesis. The implant prosthesis is stable and retentive
without the efforts of the musculature.
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