Latest technology For Regeneration of Broken Tooth

Researchers from the University of Alberta believe they have found a method of regrowing teeth and possibly bone that have been broken. The scientists use a miniaturized low-intensity pulsed ultrasound (LIPUS) system-on-a-chip which offers a non-invasive and novel way to stimulate jaw growth and dental tissue healing.

Dr. Tarak El-Bialy from the Faculty of Medicine and Dentistry and Dr. Jie Chen and Dr. Ying Tsui from the Faculty of Engineering developed a tiny wireless ultrasound transducer device that comfortably fits inside the patient’s mouth while packed in biocompatible materials. The device is mounted on an orthodontic or “braces” bracket or even a plastic removable crown. The team also designed an energy sensor that will ensure the LIPUS power is reaching the target area of the teeth roots within the bone.

Dr. Chen says “It’s very exciting because we have shown the results and actually have something you can touch and feel that will impact the health of people in Canada and throughout the world.” Chen works out of the Department of Electrical and Computer Engineering and the National Institute for Nanotechnology.

The technology has already been patented, and they hope they will have the system-on-a-chip finished to complete the miniaturized device by next year. El-Bialy says “If the root is broken, it can now be fixed. And because we can regrow the teeth root, a patient could have his own tooth rather than foreign objects in his mouth.”

The device is aimed at people experiencing dental root resorption, a common effect of mechanical or chemical injury to dental tissue caused by diseases and endocrine disturbances. The market potential in the US alone is 1.4 million.

The device was first tested on rabbits. After positive results the scientists moved onto humans and found similar results. They have also shown that LIPUS can improve jaw growth in cases with hemifacial microsomia, a congenital syndrome where one side of the child’s jaw or face is underdeveloped compared to the other “normal” side.

Usually these patients undergo many surgeries to improve their facial appearance. The work on human patients was presented at the World Federation of Orthodontics in Paris, September 2005.

Source: Dental Scientists Use Ultrasound To Regrow Teeth And Bone - A Broken Tooth Can Be Re-Grown In One Year

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Relation Between Porcelain Veneers & Tooth Cavity

Providing an instant smile restoration, porcelain veneers are the shining star in the cosmetic dentistry universe. However, just because there is a ceramic sheet protecting your teeth and hiding their imperfections does not mean that your teeth are now immune from future decay.

Benefits of Veneers:

• Porcelain veneers can address numerous cosmetic issues in your smile, such as:
• Discolored enamel
• Cracked, chipped, crooked or fractured teeth
• Gaps between teeth

While these are all important cosmetic benefits, porcelain veneers also act as a barrier between tooth enamel and staining agents such as sugary foods, chocolate, tobacco products, or dark beverages such as coffee, tea, or wine. However, even though the ceramic material that porcelain veneers are made of is resistant to decay, the teeth behind are still vulnerable.

Dangers To Consider:
Porcelain veneers are placed onto a person’s teeth after a small amount of tooth enamel is shaved off. However, if an inexperienced or unskilled dentist attaches the porcelain veneers, it’s possible that a ledge may exist along the border of the veneer. Over time, undetectable crumbs of food can gather in these pockets and gnaw away at your teeth, making a root canal or dental crown inevitable.

Just because there’s a shell protecting your teeth does not mean their immune from cavities. Maintaining quality oral health through daily brushing, flossing and regular dental visits is still required to guarantee the health of your teeth.

What Happens If You Get A Cavity?
It’s not the end of the world. Cavities can only occur on the area where the porcelain veneer does not cover your tooth and, so long as it’s caught early, the cavity is easy to fix.

In fact, fixing a cavity on a porcelain veneer protected tooth is the same process as fixing it on a non-veneered tooth. The only difference is if the cavity directly borders the porcelain. This then requires a procedure that will bond the composite resin material to the porcelain veneer.

Maximizing Your Porcelain Veneers Lifespan:
While maintaining good oral hygiene is important to avoiding cavities around your porcelain veneers, there are additional steps you can take to maximize your porcelain veneers lifespan.

Avoid clenching and grinding your teeth. If you grind your teeth while asleep, be sure to speak with your dentist to receive a protective mouth guard don’t chew on inedible items.

Source: Porcelain Veneers & Cavities

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Dental Implants: Teeth Loss Treatment

Unlike sharks, humans do not have a near-infinite supply of teeth constantly growing in. Nor do we have constantly-growing incisors like rodents. Instead, we are issued a finite supply of teeth, and when they're gone, that's it. Once one tooth is gone, others can drift, crowd, and come out of alignment. The jawbone can decay, making it fragile and susceptible to breakage. It can look very unattractive, and the functions of the mouth, including chewing and speaking, can be affected.

Fortunately, cosmetic dentists have a number of solutions that are both aesthetic and functional to remedy the loss of teeth.

The Old War Horse:
With the exception of cosmetic bridges wired into the mouths of corpses following death, dentures were the first treatment for lost teeth. Dentures are prostheses that fit in the mouth, with one or more ponitcs (false teeth) that fill the spaces left by lost teeth. Dentures can be full or partial, and either top or bottom. Dentures can be a reasonable cosmetic and functional appliance, if well-made, but they can also be a poor solution for the problem of missing teeth, as they sometimes fit uncomfortably and are not fastened to the jaw, so they can slide out of place.

Fully-Functional Appliance:
Modern dental bridges are a fully-functional, highly cosmetic solution to the problem of missing teeth. In a dental bridge, the pontic (or pontics, though bridges are rarely recommended for very many teeth) are fastened to a neighboring tooth or neighboring teeth. This can be done either by modifying the supporting teeth with a dental crown, or it can be done using dental bonding that bond the pontic directly to the other teeth.

Bridges are near-perfect prostheses from both a functional and a cosmetic standpoint. Their only problem comes if bacteria begins to collect under the pontic as a result of poor oral hygiene. Their dependence on other teeth can also be a drawback, because they either require neighboring teeth to be modified with crowns, or if directly bonded they can fail if a neighboring tooth fails.

High-Tech Solution:
A dental implant goes even further toward a high-functioning and highly attractive prosthetic. In fact, a dental implant functions like the root of the tooth, and the crown on top is a fully-functioning tooth for all intents and purposes. Once a dental implant has been integrated into the jawbone, it requires no special treatment, and in most cases it will function as well or better than your natural teeth.

If you require many or all your teeth to be replaced in either arch, you can consider a system like Nobel's All-on-4 system, in which an entire arch of teeth is anchored using four implants into the jaw.

Although there are many ways to avoid the negative effects of missing teeth, the crown jewel is the dental implant.

Source: Dental Implants: When a Tooth Goes Bad

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Causes & Solutions For Stained Teeth And Chipped Tooth

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Bright, white teeth are part of our view of ideal beauty. Unfortunately, many of us have teeth that don’t quite meet that standard. They’re not quite as white as we’d like, or they look yellowish, or even gray or brown, making us self-conscious.

Several factors can cause teeth to look discolored or stained. Some of these are easily prevented or corrected, while others are harder to avoid and difficult to treat.

Some of the most common causes of stained teeth are foods and beverages. Examples of these that can discolor your teeth include:

• Coffee
• Tea
• Wine
• Darkly pigmented food

Mild stains of this type, called extrinsic staining, can often be removed by a regular dental cleaning. More stubborn staining might require tooth whitening treatments in order to eliminate them.

Other factors can also cause stains. Smoking can cause nicotine stains, as can any other form of tobacco use. Discoloration can also result from:

• Trauma
• Aging
• Root canals
• Cracks in the teeth
• Regular wear and tear

Wear and tear on the teeth, as well as aging, can erode the enamel layer of the tooth, allowing the darker-colored dentin to show through. Cracks in the teeth caused by wear or trauma can collect food particles and other staining agents. Trauma to an individual tooth can also cause it to darken. This could mean that the nerve has been damaged, so if an individual tooth becomes dark after it’s been injured, you should have a dentist evaluate its condition.

Tooth discoloration and staining caused by trauma and wear can often be corrected with whitening treatments. Over the counter tooth whitening products can provide effective results, but for truly dramatic whitening, consult a qualified cosmetic dentist. In-office whitening treatments can lighten your teeth as many as six shades in one session. Take-home kits are also available, with powerful whitening agents that work over a longer period of time.

Other forms of discoloration in the teeth can occur while the permanent teeth are forming. This is most often caused when a child ingests too much fluoride or must take certain kinds of medication, especially antibiotics. This kind of stain becomes a part of the tooth. This intrinsic staining is difficult to treat with whiteners. In order to restore your teeth to a pleasant white color, you might have to have porcelain veneers placed to cover the stains.

Source: Causes of Stained Teeth

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