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- at 11:32:41RSS Feed | Really Simple Syndication

root canal , pulp
Local anesthesia is administered via injections to numb the tooth to be treated and the surrounding tissues. If the pulp in a tooth is acutely inflamed, and therefore very painful, it may take a while to get it numb, but your dentist will not start the treatment until it is.

The diseased and dead pulp tissue is removed from the tooth with specially designed instruments used to clean out the root canals and pulp chamber. This is not painful; the area is numb and the tissue being removed is either dead or dying. Once the pulp, along with the nerves contained in it, is removed, the tooth itself can no longer feel pain.

Root canal fillings are selected that will exactly fit into the freshly prepared canals. Usually a rubber-like material called gutta-percha is used to fill the canal space. It is a thermoplastic material (“thermo” – heat; “plastic” – to shape), which literally is heated and then compressed into and against the walls of the root canals to seal them. Together with adhesive cement called a sealer, the gutta-percha fills the prepared canal space. Sealing the canals is critically important to prevent them from becoming reinfected with bacteria.

A temporary or permanent filling material will then be placed to seal the access hole that was made to treat the canals, and the dental dam is removed. If the tooth lacks sufficient structure to hold a restoration (filling) in place, the dentist or endodontist may place a post (either metal or a very strong plastic) in one of the canals inside the tooth to help retain it.

Your tooth will need a permanent restoration — a filling or a crown — to replace lost tooth structure, and provide a complete seal to the top of the tooth. Your endodontist will send you back to your general dentist to determine which type of restoration is best for you. This step is of particular importance since many studies show that if the filled root canals(root canal treatment equipment) are recontaminated with bacteria from the mouth, there could be a recurrence of infection around the tooth.
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- at 10:43:23RSS Feed | Really Simple Syndication

tooth , dentist , crown
To repair a cracked tooth, a dentist may need to either administer a crown or a filling. The type of treatment used typically depends on the severity of the crack. Minor surface cracks are fairly normal for most people, and these can usually be buffed and polished by a dentist to make them less noticeable.

When a tooth has cracked completely in two, a dentist will normally need to assess the damage to determine whether he should fix it with a crown or a filling. A crown may be necessary to repair a severely cracked tooth, while cracks that are minor may be treated with fillings.

The primary problem with teeth that are cracked in two pieces and left untreated is that the cracks will likely get much worse over time. This tends to happen in much the same way as a cracked windshield in a car. The crack will typically spread until the entire tooth breaks off into two pieces. In most cases, the crack encompasses the entire tooth from the nerve up to the surface. A root canal might be necessary to repair a cracked tooth in a person who has a tooth crack that spreads to the nerves of her teeth.

A person who has a minor surface crack, which is often called a craze line, will not normally require treatment from a dentist. Some people do choose to have surface cracks polished by a dentist so that they are not noticeable, but this isn't always necessary. These small surface cracks affect only the enamel of the tooth and do not normally cause any discomfort. Some people may be able to feel rough spots caused by these surface cracks on their teeth with their tongues. Having surface cracks buffed and polished by a dentist should not only make the cracks less noticeable, but might also take away the rough spots( teeth whitening machine).

To repair a cracked tooth, a dentist will have to assess the damage so she can determine which type of treatment is best. Crowns may be very helpful for teeth that have major cracks because they can normally prevent the cracks from spreading. Fillings are usually helpful for minor cracks, but these may need to be redone over time if cracks start to spread. A person might want to repair a cracked tooth with a filling for a temporary quick fix. Fillings might also be a good option for a person who cannot afford a crown, because fillings are typically less expensive than crowns.
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- at 09:59:00RSS Feed | Really Simple Syndication

When was the last time you gave any thought to your vacuum system? Probably not once since it was bought and installed and probably not again until it needs replacement. Do you ever hear your suction(dental suction unit), smell your suction, does it ever produce inadequate force to allow all the practitioners in the practice to operate effectively at the same time? Traditional wet vacuum systems are loud, smelly (both from the burnt oil and the debris that is trapped in the tanks for an extended period of time) and use massive amounts of water, up to 200,000 gallons per year, equal to an Olympic size swimming pool worth of water every month. Not only is this an environmental concern, but a major financial sinkhole as well.

Averaged over North America, the water required to run a wet vacuum system can cost approximately $2,000 per year. This accounts for the incoming costs only; some communities are beginning to legislate what they consider excessive waste water release, taxing effluents. Thus, the dentist with a wet vacuum system is hit with a double water bill, once on the way in, and again on the way out. Since, a dry vacuum system does not require the water that wet systems do, there is a very positive financial impact (in addition to the environmental one) in switching to the newer technology when the old system needs to be replaced.

The recent introduction of various dry vacuum systems eliminates these concerns and provides excellent clinical vacuuming power. The concerns of retro-fitting a new unit center on practicality and cost. The replacement dry system should be no larger than the existing wet one, and should preferably provide more suction capacity for the practice. Other parameters include reduction of noise and the drainage requirements; most wet system traps must be drained on a regular basis, a task usually allotted (due to its popularity) to the staff member with the least seniority.

Both systems work well for dentistry. However, a new wet vac creates up to 15″ Hg suction pressure while a new dry vac (some but not all) creates up to 25″ Hg. This provides the power and performance that the dentist expects from the vacuum system. This is probably the single most important factor to consider when selecting a new vacuum and should be carefully researched. (Some dry vacs produce only 8″ Hg suction pressure.)
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- at 09:35:04RSS Feed | Really Simple Syndication

cueing light , tip , LED
Never turn off a dental curing light while the fan is still running – it will overheat. Always allow the fan to cool the light. Once the fan stops running, the light can safely be turned off.

Many LED guns also include the timer, battery charge indicator, curing mode adjustment button, and other controls. For most models, these controls are located on the top of the gun so they can viewed by both right-handed and left -handed operators. However, in some instances, the controls are located on the side of the handle visible only to right-handed operators. These lights would not be a good choice for the left-handed minority.

Wand Typical pencil-thin wands were usually found with argon lasers and the original plasma arcs, but these types were corded. The cordless wands of LED lights have more bulk, but are still slimmer and lighter than the guns. Their activation mechanism using a pen grasp, however, may be somewhat awkward, especially if you are used to the triggers on guns.

Tips The power emitted from the face of curing tips is typically highest in the center and decreases as you get closer to the edge. If you are curing a large restoration and you are depending on the edge of the tip to cure critical areas like a veneer margin, you may be unknowingly undercuring.

For example, the mesiodistal width of a MOD preparation in a mandibular first molar may be 11mm. If you are using an 11mm tip, the power at its edges may not be strong enough to fully cure the marginal ridges. So, if you see fractures in these peripheral areas, it may be due to the restorative material not being cured properly to maximize its physical properties.

Using a tip too small could also cause brown lines at margins of veneers due to undercured resin cement. Large restorations would be better served in most instances by curing with a 13mm tip, which overlaps the restoration margins by several millimeters. However, the power output by a 13mm tip may be lower compared to smaller tips and may require longer curing times.

Multiple tips increase the versatility of a curing light and access to hard-to-reach areas. Four tips, all curved at roughly 60, should be sufficient for the vast majority of procedures.
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