Posts for: March, 2020
While we often associate tooth decay with cavities forming in a tooth’s visible or biting surfaces, the occurrence of this all too common disease isn’t limited to those areas. Cavities can develop in any part of a tooth exposed to bacteria.
Gum recession, the shrinking back of the gums from the teeth, can cause such exposure in areas normally covered by the gums. Because these areas are usually more vulnerable to infection when exposed, cavities can develop at or right below the gum line. Because of their location it can be difficult to fill them or perform other treatments.
One way to make it less difficult is to perform a crown lengthening procedure. While the term sounds like we’re increasing the size of the tooth, we’re actually surgically altering the gums to access more of the affected tooth surface for treatment. It’s typically performed in a dental office with local anesthesia by a general dentist or a periodontist, a specialist in the gums.
During the procedure, the dentist starts by making small incisions in the gums to create a tissue “flap” that can be lifted out of the way. This exposes the underlying bone, which they then reshape to support the gum tissue once it’s re-situated in its new position. The dentist then sutures the gums back in place. Once the gums heal, the decayed area is ready for treatment.
Crown lengthening is also useful for other situations besides treating cavities. If a tooth has broken off at the gum line, for example, there may not be enough remaining structure to support a crown. Crown lengthening can make more of the underlying tooth available for the crown to “grab” onto. It’s also useful in some cases of “gummy smiles,” in which too much of the gum tissue is visible in proportion to the tooth size.
Because crown lengthening often involves removing some of the bone and is thus irreversible, you should discuss this procedure with your dentist in depth beforehand. It could be, though, this minor procedure might make it easier to preserve your teeth and even make them look more attractive.
Overbites, underbites, crossbites—these are just a few of the possible malocclusions (poor bites) you or a family member might be experiencing. But no matter which one, any malocclusion can cause problems.
Besides an unattractive smile, a malocclusion makes it more difficult to chew and to keep the teeth and gums clean of disease-causing bacterial plaque. Thus correcting a malocclusion improves dental health; a more attractive smile is an added bonus.
This art of correction—moving teeth back to the positions where they belong—is the focus of a dental specialty called orthodontics. And, as it has been for several decades, the workhorse for achieving this correction is traditional braces.
Braces are an assembly of metal brackets affixed to the teeth through which the orthodontist laces a metal wire. The wire is anchored in some way (commonly to the back teeth) and then tightened to apply pressure against the teeth. Over time this constant and targeted pressure gradually moves the teeth to their new desired positions.
The reason why this procedure works is because teeth can and do move naturally. Although it may seem like they’re rigidly set within the jawbone, teeth are actually held in place by an elastic tissue network known as the periodontal ligament. The ligament lies between the tooth and bone and keeps the tooth secure through tiny fibers attached to both it and the bone. But the ligament also allows teeth to continually make micro-movements in response to changes in chewing or other environmental factors.
In a sense, braces harness this tooth-moving capability like a sail captures the wind propelling a sailboat. With the constant gentle pressure from the wires regularly adjusted by the orthodontist, the periodontal ligament does the rest. If all goes according to plan, in time the teeth will move to new positions and correct the malocclusion.
In a way, braces are the original “smile makeover”—once crooked teeth can become straight and more visually appealing. More importantly, though, correcting a poor bite improves how the mouth works, especially while eating, and keeping things clean. A straighter smile isn’t just more attractive—it’s healthier.
If you would like more information on correcting misaligned teeth, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Moving Teeth with Orthodontics.”
How do you know if you have periodontal (gum) disease? Sometimes your gums will tell you—when they’re red, swollen or bleed easily.
But your gums can also look and feel healthy while a gum infection still brews below the gum line. In this case, a regular dental visit could make the difference. Even without overt signs of infection, we may be able to detect gum disease with a slender metal instrument called a periodontal probe.
Gum disease is a bacterial infection that most of the time arises from dental plaque. This thin film of bacteria and food particles accumulates on tooth surfaces, especially because of poor or non-existent oral hygiene. A continuing infection can weaken gum tissues and cause them to pull away or detach from the teeth.
Normally, there’s a slight gap between the gums and teeth. But as the infected gums pull away, the gaps grow larger and deeper, forming what are known as periodontal pockets. They become filled with infection that soon spreads to the root and bone and increases the risk of tooth loss.
These pockets, though, could be the means for detecting a gum infection with the help of the periodontal probe. During a dental exam we gently insert the probe, which has millimeter depth markings etched on it, between a tooth and its adjacent gums. While a depth of 1 to 3 mm is normal, a probe measurement of 4 to 5 mm could be a sign of an early stage infection. A reading of 7 to 10 mm, on the other hand, may indicate more advanced disease.
Along with other factors, periodontal probing can be quite useful identifying both the presence and extent of a gum infection and then how to treat it. The goal of any treatment is to remove plaque and tartar (calculus) deposits that sustain the infection. But probing, along with other diagnostic methods like x-rays, could point to deeper infection below the gum line that require more extensive methods, including surgery, sometimes to access and remove the disease.
Achieving the best treatment outcome with gum disease often depends on finding the infection early. Periodontal probing helps to make that discovery more likely.