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White filling is
normally made of Glass ionomers. The material has
translucent property, tooth-colored materials made
of a mixture of acrylic acids and fine glass powders
that are used to fill cavities, particularly those
on the root surfaces of teeth. Glass ionomers can
release a small amount of fluoride that may be
beneficial for patients who are at high risk for
decay. When the dentist prepares the tooth for a
glass ionomer, less tooth structure can be removed;
this may result in a smaller filling than that of an
amalgam.
Glass ionomers are primarily used in areas not
subject to heavy chewing pressure. Because they have
a low resistance to fracture, glass ionomers are
mostly used in small non-load bearing fillings
(those between the teeth) or on the roots of teeth.
Resin ionomers also are made from glass filler with
acrylic acids and acrylic resin. They also are used
for very small, non-load bearing fillings (between
the teeth), on the root surfaces of teeth, and they
have low to moderate resistance to fracture.
Ionomers undergo high wear when placed on chewing
area. Both glass and resin ionomers mimic natural
tooth color but lack the natural translucency of
enamel. Both types are well tolerated by patients
with only rare occurrences of allergic response.
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Amalgam filling is
known to be used by dentists for over 100 years. Dental
amalgam is the most thoroughly researched and tested
restorative material among all those in use. It is
durable, easy to use, highly resistant to wear and
relatively inexpensive in comparison to other
materials. For those reasons, it remains a valued
treatment option for dentists and their patients.
Dental amalgam is a stable alloy made by combining
elemental mercury, silver, tin, copper and possibly
other metallic elements. Although dental amalgam
continues to be a safe, commonly used restorative
material, some concern has been raised because of
its mercury content. However, the mercury in amalgam
combines with other metals to render it stable and
safe for use in filling teeth.
There is contradict about the safety of
dental amalgam for mercury content. According to Major USA and international scientific and health
bodies, including the National Institutes of Health,
the U.S. Public Health Service, the Centers for
Disease Control and Prevention, the Food and Drug
Administration and the World Health Organization,
including Pattaya Public health have been satisfied that dental amalgam
is a safe, reliable and effective restorative
material.
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