|
Dental
Implants
A dental implant is an artificial tooth root replacement
and is used in prosthetic dentistry to support restorations
that resemble a tooth or group of teeth. There are several
types of dental implants. The most widely accepted and
successful implant today is the osseointegrated implant,
based on the discovery by Swedish Professor Per-Ingvar
Branemark that titanium can be successfully fused into
bone when osteoblasts grow on and into the rough surface
of the implanted titanium. This forms a structural and
functional connection between the living bone and the
implant. This discovery has lead to the development
of not only single tooth replacement but also implant-supported
bridge, or implant-supported denture.
History of Dental Implants
The Mayan civilization has been shown to have used the
earliest known examples of endosseous implants (implants
embedded into bone), dating back over 1,350 years before
Per-Ingvar Brånemark started working with titanium.
While excavating Mayan burial sites in Honduras in 1931,
archaeologists found a fragment of mandible (lower jaw
bone) of Mayan origin, dating from about 600 AD. This
mandible, which is considered to be that of a woman
in her twenties, had three tooth-shaped pieces of shell
placed into the sockets of three missing lower incisor
teeth. The first modern day dental implantation was
performed in 1965 by Per-Ingvar Branemark of Sweden
while working with titanium metal. Branemark found titanium
integrated with bone, and coined the term osseointegration.
Branemarks first experiments were on the limbs of animals,
but later he began to experiment in the mouth which
allowed him easier access and observation.
After
publishing many articles on osseointergration and dental
implants he began to market and develop implants devices
for dental application in 1978. It was found that the
first dental implants exhibited an unacceptable failure
rate. As research continued the dental implant was refined
and has developed in to one of the greatest dental prosthetic
devices ever created.
Branemark's
discovery has led to the establishment of many implant
companies and has changed dentistry forever.
|