Private Laboratory Awards 2013
Short listed for
- Best (Small) Dental Laboratory
- Best Team
- Most Innovative Laboratory
What is Polycom 2000
Polycom 2000 is a crown, bridge and inlay system that consists of
a high quality composite bonded to an injection-moulded substructure
of polyoxymethylene resin.
Polycom 2000 Crown
How is it Different
Where bonded porcelain to metal systems are used in bridge work, the
abutment teeth are held in a fixed position as metal ceramics are
rigid and don't allow flexing.
Polycom 2000 is kinder to abutment teeth in terms of flexibility and
The lack of metal substructure results in superior aesthetics, with
no greying of margins and as no porcelain is used, the problems with
the leaching of metal oxides is susceptible patients are avoided.
What is it used for
With Polycom 2000 the composite is layered into the substructure formed
under pressure thus avoiding the problems associated with shrinkage
when curing composites in the mouth.
Polycom 2000 can generally be used in any procedure that would normally
involve the use of metal ceramics.
Why was it developed
Polycom 2000 was developed at the request of the late Dr John Lane
of Banstead Surrey.
he was one of a growing number of dentists who are becoming concerned
about the use of metals in the mouth, and their interaction between
each other and with amalgam fillings.
This can lead to electrolytic corrosion of metal parts, metallic tastes,
and the release of metallic compounds causing sensitisation and exacerbating
the problems of mercury release from amalgam fillings.
Mercury / Amalgam
Polycom 2000 was initially developed for crown and bridge work
and not as a restorative / filling material although it does lend
itself well to aesthetic inlays.
It was while researching this particular aspect that I became aware
of the dangers of mercury toxicity with regard to amalgam fillings.
Amalgam should really be called Mercury Amalgam. The mixture contains
between 50% and 70% mercury, one of the most toxic metals known to
Vapour is given off every time it is compressed.
When mercury amalgam is present along with other metals such as gold,
chrome or non-precious metals, electrolytic corrosion takes place
resulting in the liberation of metallic compunds including mercury.
In a USA university toxicology chart, on a scale of 0 to 2000 :-
Nickel is 600 , Lead
is 900 , Mercury is 1600 and Plutonium
is 1900. Mercury is nearer Plutonium than Lead in Toxicity.
Lead is banned in paint, petrol and water pipes yet mercury is still
placed in the mouth!
The dangers of mercury are known, dentists are advised not to use
mercury amalgam in certain categories of people: children, pregnant
women, hypersensitive people and other groups, and if used the patient
must be told of the dangers.
140 countries of the United Nations have signed the Minamata Convention
to ban the use of Mercury by 2020.