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ARTICLES
DENTAL
METAL ACTIVITY METER
Allergy,
the most common complaint of our time gives rise
to a variety of problems. Many people are allergic
to pollen, pet hairs, etc., yet the health risks
resulting from metal alloys used as fillings,
crowns or other restorations in the field of
dentistry are considerably greater.
When
these metals come into contact with saliva, they
form a galvanic cell-an accumulator-in the mouth.
The main elements of the alloys (Ni, Cr, Co, Pd,
etc) can cause allergies and other complaints when
the ions discharged by dissolution in the mouth
enter the organism via the bloodstream. This can
cause a wide variety of
symptoms. Frequently, a burning sensation
or a sour taste can develop in the oral mucous.
Changes may occur within the oral cavity or
throughout the human body. These can vary from the
simple case of gingivitis to pre-cancerous
lesions. Out with the oral cavity, the most
frequently observed symptoms are generalized skin
rashes or eczema, and alopecia. In addition,
dizziness, headaches, high blood pressure, pains
in the joints as well as localized symptoms in the
mucosa can occur. With the aid of new dental
restorations in situ, or those about to be
inserted it is possible, using a simple in vivo
measurement with a minimum degree of invasiveness,
to determine whether existing dental restorations
in the oral cavity are-electrochemically
speaking-in the active or stable state. The active
state is characterized by a migration of ions,
i.e. Metal ions are discharged from the metal
alloy. This migration is hazardous to the health.
In conjunction with albumins, these metal ions
enter via the bloodstream into the entire body,
where they can give rise to a wide variety of
complaints and illnesses, particularly in the
already sensitized organism.
In
our office you can be checked by a DMA meter for
Risk of wearing filling, PFM crown, bridges. It is
well known that metal substructure under PFM
bridges contains metals that can be harmful to
your health: NI, Vanadium, indium, and zinc
cadmium. These metals must be incorporated to the
alloy for acceptable binding to porcelain to metal
understructures.
Should
the measurements taken indicate necessity of
removing your fillings, bridges and crowns, we can
quickly make you new, non-metallic restorations
from ceramic and polymer composite.
The
last method is from Europe, for manufacturing
polymer-composite crowns. These restorations are
not as brittle as ceramics; they do not damage
natural teeth by grinding and finally they are
less expensive than either ceramics or porcelain,
due to the fact that we have in our office our own
laboratory (thus no work is being farmed out). It
should be added that the natural teeth opposing
polymer composite crowns and bridges wear out
considerably less aggressively than under the
ceramics.
A
group of German scientists came to a conclusion
concerning the rationalization of the oral. It
appears that, more often, both the crowns and
bridges prosthesis would have to be replaced after
7 years even if the latter do not bother the
wearer. The reason is not in the fact that the
material from which they are made requires it, but
because of an outset of caries (decay),
including that of the tooth root. The crowns
become shorter due to a progressive periodontitis.
It should be further mentioned that the cementing
material, providing the seat to the crowns and
ridges, undergoes changes, degrades and even
disappears within seven years. Its place being
taken by a film of anaerobic bacteria which is
responsible in some degree, for bad breath.
As
a result of the above consideration, a common
thinking, in Europe on this subject is as follows:
Is
there a reason to pay for expensive
porcelain-ceramic crowns and bridges to stand a
chance of wearing one’s own teeth, exposure to a
danger of fracture due to their brittleness, when
polymer-composite crowns and bridges are
available, providing equally satisfactory
aesthetic results.
There
appears to be only one disadvantage to be
considered, after a period of seven years of
usage, these polymer composites will show a
40-micron wear on chewing surfaces.
This
material can also be used to fabricate inlay
bridges that is non-metal bridges on fillings of
up to 4 pontics. This procedure is an alternative
to implants, should they be economically
prohibitive, or should you have compromised bone
or general health, to consider such implants.
Almost no drilling necessary. These restorations
can be manufactured in our lab in a relatively
short time.
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