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Tooth
Terminology
Palmer?s Notation - Palmer?s Notation is a widely used system to identify teeth. In Palmer?s Notation,
the oral cavity is divided into four quadrants -the upper left
quadrant, the upper right quadrant, the lower left quadrant, and the
lower right quadrant. Each individual tooth in each quadrant is
given a name. The name of the quadrant and the name of the tooth
form an individual identification; for example, the central incisor
on the upper left side of the mouth is called an upper left central.
| Names of Teeth |
Description |
| Central: |
The two upper
and two lower teeth in the very center of the mouth. |
| Lateral: |
The teeth adjacent
to the centrals. |
| Cuspid: |
The pointy teeth
behind the laterals. These teeth have one cuspal, or point.
Cuspids also are called canines. |
| First Biscuspid: |
The teeth behind the
cuspids. These teeth have two cuspals, or points. |
| Second Biscuspid: |
The teeth behind the
first bicuspids. These teeth also have two cuspals, or points. |
| First Molar: |
The teeth behind the
second biscuspids. These teeth have a level surface with four
cuspals, or points. |
| Second Molar: |
The teeth behind the
first molars. These teeth also have a flat surface with four
cuspals. |
| Third Molar: |
The teeth behind the
second molars. These teeth also have a level surface with four
cuspals. |
| |
Other Names
for Teeth |
| Incisor: |
Another name for the
central and laterals. |
| Canine: |
Another name for the
cuspids. |
| 6-year Molar: |
Another name for the
first molar. |
| 12-year Molar: |
Another name for the
second molar. |
| Wisdom Teeth: |
Another name for the
third molar. |
| Anterior Teeth: |
The centrals,
laterals and cuspids ?the teeth in the front of the mouth. |
| Posterior Teeth: |
The bicuspids and
molars ?the teeth in the back of the mouth. |
| Deciduous Teeth: |
The primary, or ?baby
teeth? -the first set of teeth to erupt. |
| Secondary Teeth: |
The permanent or
second group of teeth to erupt. |
| |
Parts of a Tooth and the Oral Cavity |
| Apex - |
The very bottom of
the root of a tooth. |
| Buccal - |
The tooth surface
which is next to the cheek. Usually only posterior teeth touch
the cheek, so dentists usually use the term ?buccal? when
talking about back teeth. |
| Crown - |
The part of the
tooth above the gum. |
| Cuspal - |
The chewing or
tearing points of the cuspids, bicuspids and molars. |
| Dentin - |
The calcium part of
a tooth below the enamel containing the pulp chamber and root
canals. |
| Cuspal - |
The chewing or
tearing points of the cuspids, bicuspids and molars. |
| Gingiva - |
Another name for
gums. |
| Gums - |
The pink tissue that
surrounds the teeth. |
|
Root -
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The part of the
tooth that descends below the gums. |
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- What is tooth decay?
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Tooth
decay, also known as dental caries, is a disease of the teeth
that affects individuals of all ages,
although it is more common in children and young adults. Dental
caries occurs when the tooth enamel is
destroyed. Decay begins at the tooth?s hard external surface,
and may advance to internal structures of the tooth including the
dentin and pulp. The earlier decay is treated, the better chance
of saving the tooth.
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- How does it happen?
- The bacteria inside of the mouth
changes the food (primarily sugars and starches) we eat into
acids. Over a period of time, the bacteria and acids form a sticky
deposit called dental plaque that clings to the teeth. If
the plaque is not removed, the acids will destroy the tooth?s
enamel surface ?resulting in holes or cavities. Sugar and
starches (such as candy, cakes, cookies, milk and pop) are
responsible for much of tooth decay, but sour or acidic foods
(such as lemons and fruit juices), also contribute to decay
because they change the pH (acidity level) in the mouth. If left
untreated, the decay will progress and can lead to tooth
infection. Children?s teeth primarily decay in the grooves. In
addition to the grooves, older adults decay in
other areas, including the roots of the teeth, which may be
exposed as a result of receding gums.
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- How do you prevent tooth decay?
- Taking good care of your teeth,
eating nutritious foods and visiting the dentist on a regular
basis will help prevent cavities. Here are some guidelines for
preventing tooth decay:
- ►Brushing twice a day with a
fluoride toothpaste
- ►Cleaning between the teeth
daily with floss
- ►Cleaning the teeth and gums
daily with a Hydro Floss? oral irrigator
- ►Eat well-balanced meals and
limit snacking
- ►Visiting the dentist on a
regular basis for check-ups and cleanings
- If brushing is not possible, the
next best thing is to rinse the mouth
- with water to neutralize the acids
and change the pH level in the mouth, which may curb tooth decay.
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- When should you contact a dentist?
- At least every six months for a
cleaning and a thorough examination.
- You should consult a dentist if you
experience any problems or need emergency care.
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- Gingivitis
What is gingivitis?
Gingivitis is an inflammation or
infection of the gums (gingiva) that is an early stage of
periodontal disease (gum disease). Healthy gums appear pink in
color. Gingivitis causes the gums to become inflamed and swollen
and bleed easily when they are brushed or flossed. Gingivitis is
reversible and there is no permanent damage to the gums or teeth
when treated early. If allowed to progress, the infection can
advance below the gum line and cause periodontal disease. Gum
disease, left untreated, can destroy the soft tissue, bone and
ligaments that support the teeth. Teeth may become loose and
then fall out. Periodontal disease is the leading cause of tooth
loss in adults.
Why does it occur?
Gingivitis often results from
poor oral health care. Individuals who do not brush or floss
their teeth regularly or correctly; increase their chances of
developing gingivitis.
How does it happen?
A combination of bacteria, saliva
and acids in the mouth form a sticky deposit called dental
plaque that clings to the teeth. Plaque that is not removed from
the teeth hardens into hard calculus (tartar), which irritate
the gums.
What are the symptoms?
Symptoms include gums that
are tender, red and swollen. The gums may bleed when brushed or
flossed, and it can also cause bad breath. In some cases,
there may be no obvious symptoms.
How do you treat gingivitis?
If you have inflamed gums or your
teeth bleed during brushing or flossing, you need to visit a
dentist or periodontist. The first step is to have the teeth
cleaned professionally to remove the soft plaque and tartar.
Brushing and flossing at home cannot remove the hard deposits or
calculus. Oral irrigating with the Hydro Floss
will help soften the hard deposits or calculus.
How do you prevent gingivitis?
►Brush your teeth twice a
day to remove the bacteria from the teeth.
►Use the Hydro Floss
oral irrigator daily to remove bacteria and food.
►Eat a well-balanced diet
and limit between-meal snacks.
►Visit your dentist on a
regular basis for an exam and cleaning.
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- Plaque
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- What is dental plaque?
- Plaque is a colorless film that is
constantly forming in the mouth. It is made up of a combination of
bacteria, saliva and acids that form into a
sticky deposit ?adhering to the teeth. Plaque can irritate the
gums and the acids can destroy the tooth?s enamel surface ?causing
holes or cavities. When plaque isn?t removed, it turns into
calculus and tartar.
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- What is a Plaque Attack?
- A ?plaque attack? occurs when
sugar and acids in the mouth begin to dissolve the enamel on the
tooth and starts to decay.
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- How can you prevent plaque?
- Good oral hygiene ?including
brushing at least twice a day, flossing, and oral irrigation with
the Hydro Floss? oral irrigator ?and regular
check-ups with the dentist will help eliminate plaque and tooth
decay. Dentists also recommend eating nutritiously and limiting
the number of between-meal snacks.
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- Who is affected by plaque?
- Plaque affects those as young as six
months who are just getting their primary teeth, and it continues
to form in your mouth for your whole life.
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- What if plaque is not removed?
- If plaque is not removed, it can
lead to periodontal disease (gum disease). The two most common
forms of gum disease are gingivitis and adult periodontitis.
Gingivitis is an inflammation or infection of the gums (gingiva)
and it is an early stage of periodontal disease. Gums become red,
inflamed and swollen. If not treated, gingivitis may progress to
adult periodontitis, a more serious stage of gum disease, that can
lead to tooth loss.
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- When should you contact a dentist?
- It is recommended to visit a dentist
at least every six months for a cleaning and a thorough
examination. If you experience any problems with your gum or
teeth, you should consult a dentist immediately.
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- Gum Disease
-
- What is periodontal disease?
- Periodontal disease is also known as
gum disease or periodontitis. There are various stages of gum
disease, and the two most common forms are gingivitis and adult
periodontitis. Gingivitis is an inflammation or infection of the
gums (gingiva) that is an early stage of periodontal disease. When
left untreated, gingivitis may progress to periodontal disease,
which can progress to the loss of teeth. Only a professional ?a
dentist or periodontist ?can diagnose gum disease, which often
is painless. Research shows that periodontal disease may also be
linked to heart, lung, kidney and respiratory disease, and to
premature birth.
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- How does it progress?
- A combination of bacteria and acids
in the mouth form a sticky deposit called dental plaque that
clings to the teeth. Plaque that is not removed from the teeth
hardens into calculus and tartar, which aggravate the gums.
Pockets (filled with plaque) form between the teeth and gums ?causing
the irritated gums to detach or pull away from the teeth. At this
point, the infection has advanced below the gum line and it can
then destroy the soft tissue, bone and ligaments that support the
teeth. The teeth may become abscessed and loose, and even fall
out. Periodontal disease is the leading cause of tooth loss in
adults.
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- What are the symptoms?
- The symptoms of gingivitis are
inflamed, swollen gums that bleed easily when they are brushed or
flossed. Many times bad breath is present and there are times when
there is little or no pain in the early stages. The late stage
symptoms of periodontitis are loose teeth, spaces in between the
teeth, pain upon chewing, pus around the teeth or gums, or
abscessed teeth. Receding gums may be a symptom and the tooth may
appear to look longer because the gums are
- withdrawing. Also the teeth may be
sensitive to cold, hot and sugars.
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- Who is at risk for gum disease?
- Periodontal disease is not
hereditary, but it may play a role in the progression of the
disease. Individuals with diabetes and those on certain
medications may be at risk for periodontitis. Use of tobacco in
any form can cause periodontal disease to advance more rapidly.
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- How do you prevent it?
- Keeping the teeth clean by brushing
and flossing on a regular basis will help prevent gum disease.
Using the Hydro Floss? oral irrigator on a
daily basis will help prevent gum disease.
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- Oral Cancer
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- What is oral cancer?
- Oral and throat cancer, also
referred to as pharyngeal cancer, may involve the lips, gums,
tongue, teeth, cheeks, roof or floor of the mouth or back of the
throat. It usually starts out as a small white spot that looks
like an irritation, or an ulcer that may be red or white. The most
common site is on the side of the tongue, and it oftentimes is not
painful. The lesion may become infected and increase in size.
There are 30,000 new cases of oral cancer each year, according to
the
- National Centers for Disease
Control. The Center estimates that 8,000 individuals die each year
from oral cancer. Some tumors are benign, meaning non-cancerous,
and others are malignant or cancerous. If a malignant growth is
not treated, cancer cells can spread to other areas of the body.
With early diagnosis and advanced technology, oral cancer can be
treated with success.
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- What are the symptoms?
- The symptoms, according to the
National Institutes of Health (NIH), include: A sore on the lip or
in the mouth that does not heal, a lump on the lip or in the
throat or mouth, a white or red patch on the gums, tongue or mouth
lining, unusual bleeding, numbness or pain in the mouth, a sore
throat that won?t disappear, or a feeling something is caught in
the throat, difficulty or pain with swallowing or chewing, jaw
swelling that causes dentures to fit poorly or be uncomfortable,
voice changes, and ear pain.
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- How is it detected?
- Most dentists or hygienists check
for oral cancer during the routine examination. If you have any
symptoms, you should contact your dentist or physician
immediately. Oral cancer is detected via a biopsy that includes
removing all or part of the tissue growth. The sample is sent to a
lab where the cells are examined.
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- How is it prevented?
- Good oral hygiene can help prevent
oral cancer, as well as having your dentist or physician check
your mouth regularly for skin lesions and abrasions.
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- Halitosis
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- What is halitosis or bad breath?
- Halitosis is a condition of having
offensive or ?bad breath?. Nobody wants to have bad breath,
and many consumers are in search of Products ?including
toothpaste, mouthwash and mints ?that promise a quick cure for
halitosis and fresher-smelling breath. Bad breath is often
self-perceived and there is no test or device to diagnose or
measure the problem. Breath mints or mouthwash may freshen the
breath short-term, but do not often get to the root of the
problem. A common source of bad breath is the mouth and tongue.
therefore, a trip to the dentist is the first step to rule out any
dental problems.
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- What causes halitosis?
- ►Decaying or rotten teeth.
Bacteria and acids in the mouth form a sticky deposit called
dental plaque that clings to the teeth. If the plaque is not
removed, the acids will destroy the tooth?s enamel surface ?resulting
in holes and cavities. If left untreated, tooth decay can result
in a foul odor in the mouth.
- ►Food trapped in the teeth or
tongue. Bacteria and food particles can become lodged in the teeth
or stuck on the papillae (small projections on the tongue) -
causing bad breath. It?s important to brush and floss the teeth,
and brush
- the tongue and back of it to remove food debris. Tongue
scrapers are available to help remove debris from the tongue. The Hydro
Floss? oral irrigator is an excellent tool to
remove trapped food and debris from the teeth and gum.
- The Hydro
Floss? oral irrigator also assist in the removal
and flushing of plaque and tartar build-up on the teeth.
- ►Periodontal (gum) disease.
Pockets of plaque form between the teeth and gums - causing
inflammation and irritation to the gums. The constant inflammation
can damage the ligament supporting the teeth and an infection can
occur, eventually resulting in tooth loss. Gum disease can cause a
bad taste in the mouth or halitosis.
- ►Sinus problems. Infections in
the sinus cavity can contribute to bad breath.
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- How should it be treated?
- Good oral health care ?brushing
the teeth and flossing will help reduce foul odors in the mouth.
The Hydro Floss? oral irrigator used daily will
help reduce halitosis. If you have chronic bad breath, visit your
dentist who can rule out dental problems such as decay or
periodontal disease.
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- Orthodontics
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- What is orthodontics?
- Orthodontics is the specialty of dentistry
that involves the treatment of malocclusion, which is when the upper and
lower teeth or jaw do not meet correctly. Individuals may need to be
treated by an orthodontist if they have problems with their bite (such
as an over or under bite), crooked teeth or overcrowding in the mouth.
An orthodontist may move the teeth into position or correct the bite
using braces, which are appliances
bonded to the teeth and use brackets, wires, rubber bands or other ways
of moving the teeth. An orthodontist may also use removable
appliances to reposition the teeth. In more serious cases, a patient may
need jaw surgery to align the bite. Children and adults can be treated
for malocclusion. A dentist or orthodontist can perform an initial
evaluation to determine if braces are needed.
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- What if the teeth are not straightened?
- Left untreated, an individual may suffer
from chewing or jaw (TMJ or temporomandibular joint) problems because
the bite is off, increased tooth decay because teeth may be difficult to
clean or gum disease. An individual with crooked teeth and an
unattractive smile may suffer from low self-esteem, social problems or
even depression.
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- What are the types of problems?
- There are three main types of
malocclusions, including:
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- ►Type 1. The upper and lower jaw are
proportionally related from front to back, but there are problems with
the teeth lining up straight within the jaws.
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- ►Type 2. The upper jaw is too far
forward and/or the lower jaw is too far back resulting in an overbite,
and ther may also be problems with alignment of teeth.
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- ►Type 3. The upper jaw is too far
back and/or the lower jaw is too far forward resulting in an under bite,
and the teeth may also be crooked.
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- How long will treatment take?
- It?s impossible for an orthodontist to
project the actual treatment time. In most cases, however, treatment
will range from 15 to 48 months for those with severe problems. In
calculating total treatment time, the ?resting stages? between
multi-stage treatment periods (when the teeth are not actually being
moved), should not be included. If a patient does not follow
instructions from the dentist, treatment may take longer. If the
interceptive stage is a success, subsequent stages may be avoided. An
orthodontist develops a tailord treatment plan for each patient.
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- How effective is treatment on adults?
- More and more adults are getting braces.
There is an array of treatment options for adults on the market?including
ceramic braces and removable appliances?but they may have limited
applicability and effectiveness. Many dentists report that metal braces
are still the most effective and least expensive option.
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- Child Oral Health
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- Cavity prevention is not the only concern
parents should have when considering their children?s oral health.
Recent studies show that periodontal disease continues to plague
millions of Americans, including children.
- The best way to ensure that your child
does not get cavities or gingivitis is to instill proper oral habits
early. Good oral hygiene routines should be established as early as
infancy and continued throughout life.
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- When do teeth appear?
- Teeth begin to erupt at about six months
of age. The tooth appears first and the root begins to develop
underneath. When a child?s mouth is fully developed there should be 20
teeth?10 on the bottom and 10 on the top. However, the top and bottom
teeth erupt at different times.
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- Top: The
central incisors, or very front teeth, are the first to erupt between 6
to 12 months. The teeth next to them, called the lateral incisors, erupt
between 9 to 13 months. The canines erupt between 16 to 22 months. The
fist molars erupt between 13 to 19 months. And the second molars erupt
between 25 to 33 months.
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- Bottom: The
central incisors erupt between 6 to 10 months. The lateral incisors erupt
between 10 to 16 months. The canines erupt between 17 to 23 months. The
first molars erupt between 14 to 18 months. The second molars erupt
between 23 to 31 months. Under all this activity, the 32 adult teeth
are forming. In fact, the adult teeth began developing when the baby was
three months old.
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- At what age should my child visit the dentist?
- Children should visit the dentist for the
first time between the ages of six months to one year. Do not wait for
the child to be in pain to bring him or her to the dentist. Most
procedures are painfree and your child should know that a trip to the
dentist can be a comfortable and fun experience. Regular brushing
should become a part of a child?s daily routine as soon as he or she
can hold a brush. Parents should also swab infant?s gums to prevent
plaque buildup. Children?s teeth should be brushed as soon as they
erupt. Although the enamel of a child?s tooth is stronger than
that of an adult, it is also thinner, so cavities develop more quickly.
Children?s primary teeth require as much care as their permanent
teeth. Untreated cavities in primary teeth can adversely affect the
development of permanent teeth. Such cavities result in a roughening of
adult teeth, or may result in primary teeth that erupt with cavities.
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- Are ?baby? teeth important?
- Your child?s primary teeth are extremely
important. Without them your child cannot chew food properly and will
have difficulty learning to speak clearly. Children who lose their
primary teeth too soon require a space maintainer until their permanent teeth
erupt. Otherwise, the teeth will tilt toward the empty space, causing
the permanent teeth to come in crooked.
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- When do children lose their teeth?
- The permanent teeth do not erupt until the
child is almost 8 years of age. They continue to erupt until the child
is about 13 years of age. Girl?s teeth tend to erupt a little earlier
than boys?. The only teeth to appear after that are third molars, or
wisdom teeth. They usually form between the ages of 12 to 16 and do not
erupt until 17 to 20 years of age.
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- How can I help my child prevent cavities?
- Children are the most cavity-prone of all
age groups. It is critical that children brush twice each day and floss
once
- each day to remove plaque, the colorless film of bacteria that
forms on teeth and leads to decay and gum disease.
- A well-balanced diet
and limited snacking also promote good oral health. Fluoride toothpastes
and mouth rinses
- provide important protection. And, of course, regular
dental check-ups are important.
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- When and how often should my child brush their teeth?
- Dentists recommend brushing at least twice
a day ?after breakfast and before bedtime.
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- How often should my child visit the dentist?
- Most children need appointments every six
months. However, children who are experiencing cavities or other dental
problems may need to see the dentist more frequently.
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Adult Oral Hygiene
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Why is oral hygiene important?
-
Good oral hygiene is important to an
individual?s overall health. Taking excellent care of your teeth
and
visiting the dentist on a regular
basis are key ways to prevent tooth decay and gum disease, as well
as
maintain healthy-looking teeth. Good
oral health care should begin at birth so that it develops into a
lifetime habit.
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How often should you brush and floss?
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Dentists
recommend that you brush at least twice a day (morning and night), and
if possible, after every meal. It?s important to brush at bedtime
because saliva ?that washes away food particles decrease at night,
making it easier for decay to start. Individuals should floss their
teeth once a day. Oral irrigation using the Hydro Floss oral irrigator will assist in flushing out food particles and
debris, also in reducing plaque. Toothpicks are not recommended because
they may splinter in the gum area.
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What is the best way to brush?
-
An individual should receive advice
from his or her dentist on how to properly brush the teeth.
Dentists recommend using a soft
toothbrush, and brushing for one to two minutes. In addition:
►Brush the outer surface of each
tooth (upper and lower) and the gumline ?brush using gentle, small
circles
►Hold the brush so that the
bristles point toward the gums at about a 45 to 60 degree angle
►Brush both the teeth and gums
at the same time.
►Brush your tongue to help
freshen your breath and clean your mouth by removing bacteria
Why do you need to brush, floss and irrigate?
Brushing, flossing and irrigating will
remove plaque, a colorless film that is constantly forming in the
mouth. Plaque is made up of bacteria, saliva and acids that form
into a sticky deposit ?clinging to the teeth. When plaque is not
removed, it hardens into tartar that only a professional may be able
to remove via cleaning. Using an oral irrigator will help soft the
harden plaque (tartar or calculus).
Which is better: a manual toothbrush or an electric
one?
Comparisons have been made between the
power-assisted (electric) toothbrushes and manual toothbrushes to
look at the ability of each to remove plaque and prevent or reduce
calculus (tartar) buildup, thus reducing gingivitis
(gum disease).
These research studies have shown both powered and manual
toothbrushes to be equally effective
when used correctly. So
probably, in practical terms, which brush you use is not the
critical factor, but how you use
it that is the most important. It
basically comes down to personal preference.
If I use fluoride toothpaste and the water in my
area is fluoridated, do I still need additional fluoride?
This depends on your oral health
status and any additional sources of fluoride that you may be
receiving.
Talk to your health care professionals
about this topic for individualized information.
How do I get rid of bad breath?
That depends on what is causing it.
Often, bad breath results from less-than-optimal oral health, and
sometimes people are not aware that they are not performing oral
hygiene as effectively as they could be. A dental hygienist or
dentist will be able to evaluate your oral health procedures and
make recommendations for improvement; also, these professionals will
be able to recognize any associated problems that might be
contributing to an unpleasant mouth odor. In addition to evaluating
and suggesting alterations to your brushing, flossing, irrigating,
and tongue deplaquing regimen, your dental hygienist may recommend
products such as mouthrinse that contains zinc. If it turns out that
the problem isn?t in the mouth, a physician appointment is
advisable. Sinus problems, stomach problems, and certain foods and
medications, and other factors can contribute to bad breath.
Do older adults get cavities?
Cavities are as much a problem for
older adults as they are for children. As we age, our gums recede
away from teeth, which exposes the tooth root to plaque. Our teeth
are covered with enamel, but the root is covered with a softer
tissue called ?cementum?. Thus, tooth roots are as susceptible
to decay as teeth. According to the American Dental Association, the
majority of people age 50 and older have tooth-root decay. Older
adults are also prone to decay around the edges of fillings. Because
many older adults lacked the benefits of fluoride, they often have
many restorations. Over the years, fillings may weaken or fracture
or leak around the edges. Bacteria accumulate in the tiny crevices
causing acid to build up, which leads to tooth decay.
Is oral health important to my overall health and
well-being?
Research has reported back with an
absolute. Oral health has been directly linked to our overall health
and well-being. The mouth has been regarded to as the ?gateway?
into the body. The mouth?s oxygen-rich environment connects to
many blood vessels that provide a perfect habitat for bacteria and
to house oral cancer cells. If unattended, these same blood vessels
will transport these cells throughout the body.
The Surgeon General has reported that,
?Periodontal disease affects
75% of adults and has been linked to numerous life-threatening illnesses,
including heart and lung diseases, stroke, diabetes, anemia,
hemophilia, oral cancer, kidney disease, and low-birth weight and
premature births.?
For additional information, please
review: Oral
Health in America: A Report of the Surgeon General
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