Gregory E. Oxford, DDS, MS, PhD  &  Isabell G. Oxford, DMD
100 Whetstone Place, Suite 308, St. Augustine, FL 32086  (904) 810-2345

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Posts for: February, 2018

TheresStillHopeforaRe-InfectedToothAfterRootCanalTreatment

Most first-time root canal treatments achieve their purpose in saving an internally decayed tooth and extending its life to match those of the patient’s non-decayed teeth. Occasionally, though, a root canal-treated tooth may become re-infected by decay.

There are a number of reasons for this: the permanent crown meant to add further protection against decay may have been delayed, giving bacteria an opening to re-infect the tooth; it’s also possible the original seal for the pulp chamber and root canals after filling wasn’t sufficient to prevent bacterial contamination.

There‘s also another reason that’s very difficult to foresee — the presence of narrow, curved root canals in the tooth that can pose complications during the procedure. Some of these known as accessory or lateral canals branch off the main canals to create a complex network that’s difficult to detect during the initial procedure. If they’re not cleaned out and filled during the procedure any tissue trapped in them can remain infected and ultimately die. If these canals also open into the periodontal membrane at the attachment between the teeth and bone, the infection can spread there and become a periodontal (gum) infection that can trigger future tooth loss.

Fortunately, a reoccurrence of infection isn’t necessarily a death sentence for a tooth. A second root canal treatment can correct any problems encountered after the first treatment, especially complications from accessory canals. It may, though, require the advanced skills of an endodontist, a dental specialist in root canal problems. Endodontists use microscopic equipment to detect these smaller accessory canals, and then employ specialized techniques to fill and seal them.

If you encounter pain or other signs of re-infection for a tooth previously treated with a root canal procedure, contact us as soon as possible. The sooner we can examine and diagnose the problem, the better your tooth’s chances of survival by undergoing a second root canal treatment.

If you would like more information on tooth preservation through root canal treatment, 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 “Accessory Canals.”


By Oxford Dental Associates
February 02, 2018
Category: Oral Health
Tags: oral health  
CrackedMouthCornerscanbeIrritating-HeresHowtoTreatThem

As dentists, we often see other mouth problems besides those with teeth and gums. One of the most common is cracking around the corners of the mouth. Although usually not serious, it can be irritating and uncomfortable.

Medically known as angular cheilitis (literally “an inflammation of the angles of the lip”), it’s also called perleche, derived from the French lecher, “to lick.” The latter moniker aptly describes the tendency of sufferers to compulsively lick the sores to relieve irritation, which actually can make things worse.

Perleche has a number of possible causes, mostly from in or around the mouth (although systemic diseases or medications can cause it on rare occasions). It’s often found among younger people who drool during sleep or older people with deep wrinkles along the sides of the mouth that increase the chances of dryness and cracking. Long-term wind or cold exposure, ill-fitting dentures or a lack of back teeth (which help support facial structure) may also contribute to the condition.

Patients with perleche can also develop yeast infections from a strain called candida albicans. The infection can spread through the whole mouth, significantly increasing the chances of physical discomfort.

Treating perleche often involves topical ointments with inflammation-reducing steroids and zinc oxide, which has antifungal properties, to provide an environmental barrier during the healing process. If a yeast infection occurs, we may treat it with oral or topical antifungal medication like Nystatin for the whole mouth and chlorhexidine rinses, which has antibacterial properties.

It also helps to adopt a few preventive measures that can minimize the occurrence of perleche. If you wear dentures, for example, cleaning them often (including, if necessary, with chlorhexidine) and leaving them out at night reduces bacterial and fungal growth. We can also see if your dentures are fitting properly. Replacing missing teeth provides better facial support and could minimize wrinkling around the mouth. And, of course, keeping up daily brushing and flossing helps ensure a healthy and disease-free mouth.

If you’re experiencing cracked mouth corners, let us know at your next appointment. With our help and of other medical professionals we may be able to give you relief from this irritating condition.

If you would like more information on gaining relief from angular cheilitis, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor article “Cracked Corners of the Mouth.”