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What are the areas
of tooth prone for decay?
The grinding surface of teeth usually
has many grooves and pits and is therefore prone for accumulation of food
and microorganisms. Thus the grinding surface of the back teeth shows
high incidence of dental decay. In addition the area around the contact
between the teeth, is also the starting point of decay. Other areas of
decay are the pits found on the outer surface of the molars and small
pits on the inner side of the upper front teeth
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Is
any tooth resistant to decay?
No, but usually lower incisors, canines
and upper canines are least prone. The first permanent molars are most
commonly affected by caries as their grinding surface is often full of
deep pits and grooves that tend to accumulate food and microorganisms.
In addition the first permanent molars erupt early at a time when the
oral hygiene of children is poor. Proper, regular tooth brushing with
fluoride containing tooth pastes can help to make the tooth more resistant
to decay.
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from one tooth to other?
No, it does not. However, it can start
on many teeth simultaneously.
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Do all cavities
on tooth cause pain?
The pulp of the tooth contains the
nerve endings and blood vessels and is protected by the outer enamel and
dentin layer. Shallow cavities at the depth of enamel and the surface
of dentin are painless. As the depth of the cavity increases in dentin
the tooth becomes painful on eating hot, cold, sour or sweet foods. Once
the decay reaches pulp the pain is intolerable.
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Can
a badly decayed tooth be saved?
If sufficient sound tooth structure remains, then the tooth
can be saved by covering the whole tooth with a metal crown / cap. A dentist
specialized in crown and bridge prostheses will be the best person to
treat such teeth.
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Can a filled or restored tooth
get decayed?
Yes, even a cavity filled with a permanent filling can develop dental
caries below the filling. Hence, better care by brushing, flossing the
restored tooth along with routine checkup will enhance the long-term success.
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Does regular brushing
keep decay away?
Yes to a great extent, since it controls
the formation of dental plaque that predisposes to decay. However, other
factors like deep grooves and pits on the grinding surface of teeth, weak
teeth with less calcium content can make them more susceptible to decay
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Is decay of teeth
only due to eating of chocolates and sweets?
Sticky and sweet foodstuff promote plaque and growth of
caries causing microorganisms. This predisposes to dental caries. In addition
other causes include poor oral hygiene, teeth having deep grooves and
pits etc.
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Should decay in
milk teeth be filled?
Milk teeth are important for the overall growth and development
of children and in particular the jaws and face. In addition they maintain
the space for incoming permanent teeth. Hence, they need to be saved with
restorations until their exfoliation..
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Does decay occur
in old age?
Yes, it does but less frequently and is commonly seen on
the exposed part of the root. Advancing age usually results in recession
of the gums resulting in exposure of the root surfaces of the teeth. Food
and plaque easily accumulates around these areas leading to decay if the
oral hygiene is poor
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Does an abscessed
tooth need to be removed?
Dental abscess is the extension of infection from the tooth
to the underlying bone. Once, active infection is controlled by antibiotics,
the tooth is treated by special procedure called root canal filling. This
helps the tooth to be retained in position and function normally.
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Why do teeth not
white in some people?
Just as skin is of different shades in different people,
teeth also exist in different shades of white. A close observation of
a single tooth shows that at the tip, it is translucent and becomes darker
as it approaches the neck of the tooth. Sometimes external and internal
stains do change the colour of teeth. These can be ruled out on examination
by a dentist.
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