Posts for: March, 2018
If you’re facing cancer treatment, we wish you the best outcome possible. Treating this disease has advanced tremendously in recent decades, but the available options are still often challenging to endure. It will be your primary focus for the foreseeable future.
As a dental provider we also want you to be aware how the two main treatments, chemotherapy and radiation, could adversely affect your teeth and gums, especially if you’re receiving radiation therapy near the head and neck. The aim of cancer treatment is to attack and destroy cancer cells to prevent their growth. Unfortunately, it can also destroy neighboring healthy cells and lead to harmful consequences in different parts of the body, including the mouth.
Salivary glands, for example, are especially vulnerable to damage during cancer treatment. This could create a situation where the mouth no longer produces adequate saliva flow, leading to a condition called xerostomia or dry mouth. Besides a lot of discomfort, restricted saliva flow can also increase your risk of tooth decay and other dental diseases. This is because saliva is the body’s acid neutralizer (acid can erode tooth enamel) and its first line of defense against microbial infection.
To guard against this, it’s important to support salivary flow as much as possible if you experience dry mouth symptoms during treatment (as well as beyond—it’s possible the damage to these glands could be permanent). Since some medications also contribute to dry mouth, you should speak with your physician about the prescriptions you’re taking: if any have dry mouth side effects ask if there’s an alternative drug without these side effects. You should also drink more water during the day and especially when taking medications. And consider substances like xylitol gum that can help boost saliva flow.
Unfortunately, it may not be possible to fully avoid the effects of these treatments on your teeth and gums. So, be sure you keep up daily brushing and flossing and see your dentist regularly for cleanings and checkups. If necessary, there are a number of restoration options to restore your smile after you’ve completed your treatment.
Home whitening kits are a popular way to turn a dull smile into a dazzling one. But these self-applied products only work for teeth with outer enamel stains — if the discoloration originates inside a tooth, you’ll need professional treatment.
Known as “intrinsic staining,” this type of discoloration most often occurs within a tooth’s pulp or dentin layers. There are a number of causes like tooth trauma or tetracycline use at an early age. A root canal treatment used to remove infection from deep within a tooth can also cause discoloration: sometimes blood pigments left after tissue removal or the filling materials themselves can stain a tooth’s interior.
Intrinsic staining can often be treated by placing a bleaching agent, usually sodium perborate, into the tooth’s pulp chamber. But before undertaking this procedure on a tooth that’s undergone a root canal treatment,Â we want to first ensure the filling is intact and still adequately sealing the tooth from infection. We also want to make sure the supporting bone is also healthy.
If all’s well, we access the pulp in the same way as the root canal treatment, and preferably through the same access hole. We then clean out the pulp chamber of any stained matter and then ensure the root canals remain filled and sealed off from the pulp chamber.
We can then place the bleaching agent into the pulp, a process that will need to be repeated every three or four days to achieve the desired level of brightness. After each session we place a cotton pellet over the opening and held in place with a temporary adhesive; we can easily remove and re-apply this covering during subsequent sessions. Once we’ve achieved the desired color change, we seal the tooth with a permanent filling and restore the access cavity with a tooth-colored composite resin material bonded to the enamel and dentin.
There are other options for an intrinsically stained tooth like veneers or crowns that outwardly cover the discoloration. Internal bleaching, however, is a more conservative approach that causes less alteration of the tooth. If successful, it can restore a stained tooth to a brighter, more attractive shade.
If you would like more information on internal bleaching, 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 “Whitening Traumatized Teeth.”