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PostSubject: Cavities/tooth decay   Cavities/tooth decay EmptyThu Jan 20, 2011 9:53 am

Cavities/tooth decay
Filed under: Boomer's Health
Cavities are decayed areas of your teeth that develop into tiny openings
or holes. Cavities, also called tooth decay or caries, are caused by a
combination of factors, including not cleaning your teeth well, frequent
snacking and sipping sugary drinks.

Cavities and tooth decay are one of the most common health problems
around the world. They're especially common in children, but anyone who
has teeth can get cavities, including infants and older adults.

If cavities aren't treated, they get larger and the decay can cause a
severe toothache, infection, tooth loss and other complications. Regular
dental visits and good brushing and flossing habits go a long way
toward preventing cavities and tooth decay.


The signs and symptoms of cavities and tooth decay vary depending on the
extent and location of the cavity. When a cavity is just beginning, you
may not have any symptoms at all.

But as the decay gets larger, it may cause such signs and symptoms as:

* Toothache
* Tooth sensitivity
* Mild to sharp pain when eating or drinking something sweet, hot or cold
* Visible holes or pits in your teeth
* Pain when you bite down
* Pus around a tooth

When to see a doctor
You may not be aware that a cavity is starting, so visiting your dentist
regularly is your best protection against cavities and tooth decay.
However, a toothache or tooth pain is commonly a telltale sign of a
cavity. If your teeth or mouth hurts, visit your dentist as soon as

In addition to pain, contact your dentist if you develop any of these signs or symptoms:

* Red, tender or swollen gums
* Bleeding gums
* Gums that are pulling away from your teeth, which may make your teeth seem longer
* Pus around your teeth and gums when you press on the gums
* A bad taste in your mouth
* Unexplained bad breath
* Loose teeth
* Changes in the way your top and bottom teeth touch
* Sensitivity to sweet, hot or cold foods or beverages
* Pain that causes you to avoid brushing or cleaning certain teeth or areas

If a cavity is treated before it starts causing pain, you probably won't
need extensive treatment. That's why it's important to have regular
dental checkups and cleanings even when your mouth feels fine. By the
time you notice symptoms, the damage is getting worse.


Cavities are caused by tooth decay, which is a process that occurs over time.

* Plaque forms. Your mouth, like many other parts of your body,
naturally contains many types of bacteria. Some of these bacteria thrive
on food and drinks that contain sugars and cooked starches, also known
as fermenting carbohydrates. When these carbohydrates aren't cleaned off
your teeth, the bacteria can convert them into acids. The bacteria,
acids, food particles and saliva then form into dental plaque — a sticky
film that coats your teeth. If you run your tongue along your teeth,
you can feel this plaque several hours after you've brushed. The plaque
is slightly rough and is more noticeable on your back teeth, especially
along the gumline.
* Plaque attacks. The acids in plaque attack minerals in the tooth's
hard, outer surface, called the enamel. This erosion causes tiny
openings or holes in the enamel — cavities. Once spots of enamel are
worn away, the bacteria and acid can reach the next layer of your teeth,
called dentin. This layer is softer and less resistant to acid than is
* Destruction continues. As tooth decay continues, the bacteria and
acid continue their march through the layers of your teeth, moving next
to the pulp, or the inner material of the tooth. The pulp contains
nerves and blood vessels. The pulp becomes swollen and irritated from
the bacteria. The bone supporting the tooth also may become involved.
When a cavity and decay is this advanced, you may have severe toothache
pain, sensitivity, pain when biting or other symptoms. Your body also
may respond to these bacterial invaders by sending white blood cells to
fight the infection. This may result in a tooth abscess.

Risk factors

Cavities are one of the most common worldwide health problems, and
everyone who has teeth is at risk of getting them. But some factors
increase the risk that you'll get a cavity or develop tooth decay. These
risk factors include:

* Tooth location. Tooth decay most frequently occurs in the back
teeth — the molars and premolars. These teeth have lots of grooves, pits
and crannies. Although these grooves are great for helping chew food,
they can also collect food particles. These back teeth are also harder
to keep clean than your smoother and more accessible front teeth. As a
result, plaque can build up between these back teeth and bacteria can
thrive, producing acid that destroys the enamel.
* Certain foods and drinks. Some foods and drinks are more likely
than others to cause decay. Foods that cling to your teeth for a long
time, such as milk, ice cream, honey, table sugar, soda, raisins and
other dried fruit, cake, cookies, hard candy, breath mints, dry cereal
and chips, are more likely to cause decay than are foods that are easily
washed away by saliva.
* Frequent snacking or sipping. When it comes to your teeth, the
amount of sugary snacks you eat is less important than when you eat
them. If you frequently snack or sip sodas, acid has more time to attack
your teeth and wear them down. This is also why parents are encouraged
not to give babies bottles filled with milk, formula, juice or other
sugar-containing liquids at bedtime. The beverage will remain on their
teeth for hours and cause erosion — often called baby bottle tooth
decay. If you're nursing or feeding an infant formula, talk to your
baby's doctor about how to prevent early tooth decay. If you have a
toddler who's transitioning from the bottle, don't let him or her wander
around drinking from a "sippy" cup.
* Not brushing. If you don't clean your teeth after eating and drinking, plaque builds up, eroding your teeth.
* Bottled water. Adding fluoride to public water supplies has helped
decrease tooth decay by offering protective minerals for tooth enamel.
But today, many people drink bottled or filtered water that doesn't
contain fluoride, and they may miss out on the protective benefits of
fluoride. On the other hand, some bottled water may contain added
fluoride, and if your drinking water also contains fluoride, babies and
children could then get too much fluoride. Talk to your child's dentist
about the amount of fluoride he or she may be getting and check
ingredient labels on your bottled water.
* Older age. An increasing number of older adults still have their
natural teeth. However, over time, teeth can wear down and the gums may
recede, making teeth more vulnerable to tooth decay and cavities. Older
adults also may use more medications that can reduce the saliva flow,
increasing the risk of tooth decay.
* Receding gums. When your gums pull away from your teeth, plaque
can form on the roots of your teeth. Tooth roots are naturally covered
with a coating called cementum, but the cementum is quickly lost when
the root surface is exposed. The underlying dentin is softer than enamel
and can become decayed more easily, leading to root decay.
* Dry mouth. Dry mouth is caused by a lack of saliva. Saliva has an
important role in preventing tooth decay. It washes away food and plaque
from your teeth. Minerals found in saliva help repair early tooth
decay. Saliva also limits bacterial growth and neutralizes damaging
acids in your mouth.
* Weak or rough dental fillings. Over the years, dental fillings can
become weak and begin to breakdown, or the edges can become rough.
Either of these situations can allow plaque to build up more easily and
make it harder to completely remove plaque.
* Eating disorders. Anorexia and bulimia can lead to significant
tooth erosion and cavities. Stomach acid from vomiting, for instance,
washes over the teeth and erodes the enamel. Eating disorders can also
interfere with saliva production. In addition, some people with eating
disorders may sip soda or other acidic drinks throughout the day, which
creates a continual acid bath over the teeth.
* Heartburn. Gastroesophageal reflux disease (GERD), acid reflux and
heartburn can cause stomach acid to flow into your mouth, wearing away
the enamel of your teeth. If your dentist notices enamel loss and
doesn't think this loss is caused by grinding your teeth, consult your
physician to see if gastric reflux is the cause. Untreated reflux can
cause significant tooth damage that is costly to correct.
* Close contact. Some harmful, decay-causing bacteria in the mouth
can be passed from one person to another by kissing or sharing eating
utensils. Parents or even child care providers may pass along harmful
bacteria to infants and children, for example.
* Certain cancer treatments. Having radiation to your head or neck
areas can increase the risk of getting cavities by changing the saliva
produced in the mouth, which allows more cavity-producing bacteria to


Cavities and tooth decay are so common that you may not take them
seriously. And you may think that it doesn't matter if children get
cavities in their baby teeth. However, cavities and tooth decay can have
serious and lasting complications, even for children who haven't yet
gotten their permanent teeth.

Complications may include:

* Pain
* Tooth abscess
* Tooth loss
* Broken teeth
* Chewing problems
* Serious infections

In addition, when cavities and decay become very painful and severe,
they can interfere with daily living. The pain may prevent you from
going to school or work, for instance. If it's too painful or difficult
to chew or eat, you may lose weight or have nutrition problems. If
cavities result in tooth loss, it may affect your self-esteem. In rare
cases, an abscess from a cavity can cause serious or even
life-threatening infections when not properly treated.

©Preparing for your appointment

If you're experiencing pain or sensitivity in your teeth, make an
appointment with your dentist. Here's some information to help you get
ready for your appointment, and what to expect from your dentist.

What you can do

* Make a list of all medications, as well as any vitamins or
supplements, that you're taking. Be sure to let your dentist know if you
have any allergies to medications or if you've ever had a bad reaction
to local anesthetics in the past.
* Write down questions to ask your dentist.

Some basic questions to ask your dentist include:

* Do I have a simple cavity, or do I need a root canal?
* How many visits will it take to treat this tooth?
* Will the pain go away after today?
* What can I take to help lessen the pain?
* How long should I wait before I eat or drink after this procedure?
* Are there any brochures or other printed material that I can take home with me? What Web sites do you recommend?
* What can I do differently to prevent decay?

What to expect from your doctor
Your dentist may ask:

* Do extremes in temperature cause you pain?
* Does pressure make your pain worse?
* Do you floss regularly?
* How often do you brush your teeth?
* Do you eat a lot of sweets or drink sugary beverages?

What you can do in the meantime
If cavities and tooth decay are causing pain, sensitivity or discomfort,
the first thing to do is make an appointment with your dentist. While
you're waiting for your appointment, some steps you can take at home to
control your pain include:

* Taking over-the-counter pain relievers, if your doctor has said it's OK for you
* Using an over-the-counter anesthetic specifically designed to soothe painful teeth
* Thoroughly cleaning all parts of your mouth and teeth — don't avoid painful areas
* Using warm water to brush your teeth
* Using a toothpaste designed for sensitive teeth
* Avoiding foods or beverages that are hot, cold or sweet enough to trigger pain

©Tests and diagnosis

Your dentist usually can detect tooth decay easily. He or she will ask
about tooth pain and sensitivity. Your dentist will examine your mouth
and teeth and may probe your teeth with dental instruments to check for
soft areas. You may also have dental X-rays, which can show the extent
of cavities and decay. Your dentist will also be able to tell you
specifically which of the three types of cavities you have — smooth
surface, pit and fissure, and root.

©Treatments and drugs

Treatment of cavities depends on how severe they are and your particular situation. Treatment options include:

* Fluoride treatments. Fluoride is a mineral that helps prevent
cavities and helps teeth repair themselves. If your cavity is just
getting started, a fluoride treatment may be able to help restore
enamel. Professional fluoride treatments contain more fluoride than
what's found in over-the-counter toothpaste and mouth rinses. Fluoride
treatments may be in a liquid solution, a gel, foam or varnish that is
brushed onto your teeth or placed in a tray that fits over your teeth.
Each treatment takes a few minutes. Your dentist may suggest having
periodic fluoride treatments.
* Fillings. A filling is material that replaces decayed areas of
your teeth. Fillings, sometimes called restorations, are the main
treatment option when the decay has progressed beyond the initial
enamel-erosion process. Your dentist drills away the decayed material
inside your tooth. The gap is then filled to restore the tooth shape.
Fillings are made of various materials, such as tooth-colored composite
resins, porcelain, or combinations of several materials. Silver amalgam
fillings contain a variety of materials, including small amounts of
mercury. Some people don't like using mercury fillings because they fear
possible adverse health effects. While some medical studies have shown
these fillings to be safe, they remain controversial.
* Crowns. If you have extensive decay or weakened teeth, you may
need a crown rather than a filling to treat your cavity. The decayed
area is drilled away. A crown is then fit over the remaining portion of
tooth. Crowns are made of gold, porcelain or porcelain fused to metal.
* Root canal. When decay is severe and reaches the inner material of
the tooth, you may need a root canal. In this procedure, the pulp of
the tooth is removed and then replaced with a filling.
* Tooth extractions. A severely decayed tooth may need to be removed
entirely. Having a tooth extracted can cause the other teeth in your
mouth to move, so if possible, consider getting a dental implant to
replace the missing tooth.


Good oral and dental hygiene can help prevent cavities and tooth decay. Follow these tips to help prevent cavities:

* Brush after eating or drinking. Brush your teeth at least twice a
day and ideally after every meal, using fluoride-containing toothpaste.
To clean between your teeth, floss or use an interdental cleaner. If you
can't brush after eating, at least try to rinse your mouth with water.
* Rinse your mouth. If your dentist feels you are at higher risk of
developing a cavity, he or she may recommend that you use a fluoridated
mouth rinse.
* Visit your dentist regularly. Get professional tooth cleanings and
regular oral exams, which can help prevent problems or spot them early.
Your dentist can recommend a schedule that's best for your situation.
* Consider dental sealants. A sealant is a protective plastic
coating that's applied to the chewing surface of back teeth — sealing
the grooves in the teeth most likely to get cavities. The sealant
protects tooth enamel from plaque and acid. Sealants can help both
children and adults. The Centers for Disease Control and Prevention
strongly recommends sealants for all school-age children. Sealants last
up to 10 years before they need to be replaced, though they need to be
checked more frequently to assure they're still intact.
* Drink some tap water. Adding fluoride to public water supplies has
helped decrease tooth decay significantly. But today, many people drink
bottled water that doesn't contain fluoride.
* Avoid frequent snacking and sipping. Whenever you eat or drink
something other than water, you help your mouth create acids that
destroy your tooth enamel. If you snack or drink throughout the day,
your teeth are under constant attack.
* Eat tooth-healthy foods. Some foods and beverages are better for
your teeth than others. Avoid foods that get stuck in grooves and pits
of your teeth for long periods, such as chips, candy or cookies.
Instead, eat food that protects your teeth, such as cheese, which some
research shows may help prevent cavities, as well as fresh fruits and
vegetables, which increase saliva flow, and unsweetened coffee, teas and
sugar-free gum, which wash away food particles.
* Consider fluoride treatments. Your dentist may recommend a
fluoride treatment, especially if you aren't getting enough fluoride
naturally, such as through fluoridated drinking water. In a fluoride
treatment, your dentist applies concentrated fluoride to your teeth for
several minutes. You can also use fluoridated toothpaste or mouthwash.
* Ask about antibacterial treatments. Some people are especially
vulnerable to tooth decay, because of medical conditions, for instance.
In these cases, your dentist may recommend special mouth rinses or other
antibacterial treatments to cut down on harmful bacteria in your mouth.

Check with your dentist to see which methods are best for you.

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