Friday, March 20, 2009
Video "I told you so" by carrie underwood feat randy travis
first time i heard this song, i luv it...
collaboration between carrie underwood (american idol's winner) with randy travis absolutely fantastic n amazing... you better listen it too.....
thx to : idolstalker
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Wednesday, March 18, 2009
How a Tooth Decays
1. Healthy Tooth
Enamel is the hard outer crystal-like layer. Dentin is the softer layer beneath the enamel. The pulp chamber contains nerves and blood vessels. It is considered the living part of the tooth.
2. White Spots
Bacteria that are exposed to sugars or carbohydrates can make acid. The acid attacks the crystal-like substance in the tooth's outer surface. This process is known as demineralization. The first sign of this is a chalky white spot. At this stage, the decay process can be reversed. Using fluorides at home and in the dental office can help the tooth repair itself.
3. Enamel Decay
Demineralization continues. Enamel starts to break down. Once the enamel surface is broken, the tooth can no longer repair itself. The cavity has to be cleaned and restored by a dentist.
4. Dentin Decay
The decay reaches into the dentin, where it can spread and undermine the enamel.
5. Pulp Involvement
If decay is left untreated, it will reach the tooth's pulp. This is where the tooth's nerves and blood vessels are found. The pulp becomes infected. An abscess (swelling) or a fistula (opening to the surface of the gum) can form in the soft tissues.
thx to: simple steps to better dental health
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Is that dangerous to get anasthesia duirng Pregnance
If you are pregnant or think you might be pregnant, tell your dentist during your visit.
During the first trimester, it is best to avoid any dental treatment that's not essential. After that point, discuss your anesthesia options with your dentist and your obstetrician or midwife. They can help to decide on the safest choice for you.
Local Anesthetics
Sometimes a dentist will give you a shot to numb part of your mouth. This is called a local anesthetic. Pregnant women can receive some local anesthetics for necessary treatment. But most dentists say it's best to have dental treatment before pregnancy or postpone treatment that's not essential.
Nursing women can receive normal doses of local anesthetics. This does not affect the baby.
If possible, pregnant women should avoid local anesthetics that contain epinephrine. If it accidentally enters a blood vessel, it could reduce the blood supply to the placenta. It also could cause spasms in blood vessels. Spasms could affect the arteries that supply the uterus.
Sedation
Sedation makes you drowsy and less anxious. Pregnant women should avoid nitrous oxide, particularly during the first trimester. There are many other options to reduce dental anxiety. Examples include listening to music or acupuncture. Women who are pregnant or could be pregnant should not be given diazepam or similar drugs.
General Anesthesia
General anesthesia causes you to become unconscious. The effects of general anesthesia on a pregnant woman and her fetus vary. It depends on the drugs used. In most cases, pregnant women should avoid general anesthesia. If you are pregnant or believe you may be pregnant, tell your dentist or oral surgeon.
from :Simple Steps to Better Dental Health
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Monday, March 16, 2009
unique church all over the world
Saint Basil's Cathedral: The Red Square's Colorful Church
The St. Basil's Cathedral is located on the Red Square in Moscow, Russia. A Russian Orthodox church, the Cathedral sports a series of colorful bulbous domes that taper to a point, aptly named onion domes, that are part of Moscow's Kremlin skyline.
The cathedral was commissioned by Ivan the Terrible to commemorate the capture of the Khanate of Kazan. In 1588 Tsar Fedor Ivanovich had a chapel added on the eastern side above the grave of Basil Fool for Christ, a Russian Orthodox saint after whom the cathedral was popularly named.
Temppeliaukio Kirkko: The Rock Church
The Temppeliaukio Kirkko (Rock Church) is a thrilling work of modern architecture in Helsinki. Completed in 1952, it is built entirely underground and has a ceiling made of copper wire. It was designed by architect brothers Timo and Tuomo Suomalainen and completed in 1969. They chose a rocky outcrop rising about 40 feet above street level, and blasted out the walls from the inside. It is one of the most popular tourist attractions in Helsinki and frequently full of visitors.
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Myths About Root Canals
There are many misconceptions surrounding root canal (endodontic) treatment. The American Association of Endodontists wants you to have accurate information. As always, when considering any medical procedure, you should get as much information as you can about all of your options. Your dentist or endodontist can answer many of your questions, and if you still have concerns, it is often wise to seek a second opinion.
Myth #1—Root canal treatment is painful.
Truth—Root canal treatment doesn't cause pain, it relieves it.
Most patients see their dentist or endodontist when they have a severe toothache. The toothache can be caused by damaged tissues in the tooth. Root canal treatment removes this damaged tissue from the tooth, thereby relieving the pain you feel.
The perception of root canals being painful began decades ago when root canal treatment was painful. But with the latest technologies and anesthetics, root canal treatment today is no more uncomfortable than having a filling placed. In fact, a recent survey showed that patients who have experienced root canal treatment are six times more likely to describe it as "painless" than patients who have not had root canal treatment.
Myth #2—Root canal treatment causes illness.
Truth—Root canal treatment is a safe and effective procedure.
Research studies performed in the 1930s and 1940s and those conducted in later years showed no relationship between the presence of endodontically treated teeth and the presence of illness. Instead, researchers found that people with root canal fillings were no more likely to be ill than people without them.1,2
Over the past several years, however, a very small number of dentists and physicians have been claiming that teeth that have received root canal (endodontic) treatment contribute to the occurrence of illness and disease in the body. This claim is based on the outdated research performed by Dr. Weston Price from 1910-1930. His research stated that bacteria trapped in the teeth during root canal treatment can cause almost any type of disease, including arthritis, heart disease, kidney disease, and others.
The presence of bacteria in teeth and mouth has been an accepted fact for many years. But presence of bacteria does not constitute "infection" and is not necessarily a threat to a person's health.3 Bacteria are present in the mouth and teeth at all times, even in teeth that have never had a cavity or other trauma.
More recent attempts to copy the research of Dr. Price (and to check its accuracy) have been unsuccessful. Researchers now believe that the earlier findings may have been caused by poor sanitation and imprecise research techniques that were common in the early 1900s.1
These more recent studies support the truth we report today—that teeth that receive proper endodontic treatment do not cause illness.
Myth #3—A good alternative to root canal treatment is extraction (pulling the tooth).
Truth—Saving your natural teeth, if possible, is the very best option.
Nothing can completely replace your natural tooth. An artificial tooth can sometimes cause you to avoid certain foods. Keeping your own teeth is important so that you can continue to enjoy the wide variety of foods necessary to maintain the proper nutrient balance in your diet.
Endodontic treatment, along with appropriate restoration, is a cost-effective way to treat teeth with damaged pulp and is usually less expensive than extraction and placement of a bridge or an implant.
Endodontic treatment also has a very high success rate. Many root canal treated teeth last a lifetime.
Placement of a bridge or an implant will require significantly more time in treatment and may result in further procedures to adjacent teeth and supporting tissues.
Millions of healthy endodontically treated teeth serve patients all over the world, years and years after treatment. Those healthy teeth are helping patients chew efficiently, maintain the natural appearance of their smiles and enhance their enjoyment of life. Through endodontic treatment, endodontists and dentists worldwide enable patients to keep their natural teeth for a lifetime
source : American Association Endodontists
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Endodontic retreatment . . .
Why do I need another endodontic procedure?
As occasionally happens with any dental or medical procedure, a tooth may not heal as expected after initial treatment for a variety of reasons:
* Narrow or curved canals were not treated during the initial procedure.
* Complicated canal anatomy went undetected in the first procedure.
* The placement of the crown or other restoration was delayed following the
endodontic treatment.
* The restoration did not prevent salivary contamination to the inside of the tooth.
In other cases, a new problem can jeopardize a tooth that was successfully treated. For example:
* New decay can expose the root canal filling material to bacteria, causing a new
infection in the tooth.
* A loose, cracked or broken crown or filling can expose the tooth to new infection.
* A tooth sustains a fracture.
What will happen during retreatment?
First, the endodontist will discuss your treatment options. If you and your endodontist choose retreatment, the endodontist will reopen your tooth to gain access to the root canal filling material. In many cases, complex restorative materials—crown, post and core material—must be disassembled and removed to permit access to the root canals.
After removing the canal filling, the endodontist can clean the canals and carefully examine the inside of your tooth using magnification and illumination, searching for any additional canals or unusual anatomy that requires treatment.
After cleaning the canals, the endodontist will fill and seal the canals and place a temporary filling in the tooth. If the canals are unusually narrow or blocked, your endodontist may recommend endodontic surgery. This surgery involves making an incision to allow the other end of the root to be sealed.
After your endodontist completes retreatment, you will need to return to your dentist as soon as possible to have a new crown or other restoration placed on the tooth to protect and restore it to its full function.
thx to : American Association of Endodontists
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