Dentistry focuses on diagnosing, preventing, and treating conditions of the teeth, gums, and oral structures, supporting oral health and overall well-being.
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Once a tooth has undergone root canal therapy, it requires specific care to ensure its longevity. A common misconception is that a “dead” tooth cannot get cavities. In reality, the tooth structure is still susceptible to decay, and the gum tissue around it is susceptible to periodontal disease.
The success of the root canal depends heavily on the seal of the restoration on top. If the crown leaks or decay starts at the margin, bacteria can re enter the canal system and reinfect the bone. Therefore, meticulous oral hygiene is the best insurance policy for the investment made in saving the tooth.
Care must be taken immediately after the procedure while the temporary filling is in place, and long term habits must be established to protect the permanent crown.
In the days following the procedure, the area may be tender. However, it is crucial to keep the area clean to prevent gum inflammation. Patients should brush the treated tooth gently.
Flossing requires care if a temporary filling is in place. The floss should be pulled through to the side rather than snapped back up, which could dislodge the temporary. Warm salt water rinses can help soothe the gums and keep the area clean.
Between the root canal appointment and the placement of the permanent crown, the tooth is sealed with a temporary filling. This material is softer than a permanent filling and can wear down or fracture.
Patients must avoid chewing sticky foods (gum, caramel) that can pull the filling out, or hard foods (nuts, ice) that can break the tooth. If the temporary falls out, the seal is broken, and bacteria can re enter the canals quickly.
Once the permanent crown is cemented, it should be treated like a natural tooth. The margin where the crown meets the tooth is the vulnerability point. Plaque accumulation here causes “recurrent decay.”
Because the tooth has no nerve, the patient will not feel the pain of a new cavity until it is very deep or has destroyed the tooth structure. Daily brushing and flossing specifically targeting the crown margin are essential.
Flossing around a crown is vital. The floss should be wrapped in a “C” shape around the tooth and moved up and down to scrub the side of the root and the crown margin.
For bridges or connected crowns, floss threaders or Superfloss must be used to get underneath the contact point. Water flossers are also highly effective for flushing out debris from around the crown margins and reducing gingival inflammation.
While a crowned tooth is strong, porcelain can chip and roots can fracture. Patients should avoid using their teeth as tools to open packages or tear tape.
Chewing on ice, unpopped popcorn kernels, or hard candies can generate enough force to crack the root of a root canal treated tooth or chip the porcelain crown. A diet that minimizes these risks prolongs the life of the restoration.
Grinding or clenching teeth (bruxism) is a leading cause of failure for root canal treated teeth. The excessive force can cause the brittle root to fracture vertically, necessitating extraction.
If a patient grinds their teeth, a night guard (occlusal splint) is mandatory. This appliance distributes the force and protects the crown and the root from the destructive pressures of nocturnal grinding.
Root canal treated teeth should be monitored radiographically. A follow up X ray is typically taken 6 to 12 months after treatment to ensure the bone has healed and the infection has resolved.
Regular dental exams allow the dentist to check the integrity of the crown. If the crown becomes loose or the margin opens, it must be addressed immediately to prevent re infection of the root canal system.
High concentration fluoride toothpaste or mouthrinse can help protect the margins of the crown from decay. Products containing Xylitol can help reduce the bacterial load in the mouth.
For patients with a high risk of cavities, the dentist may prescribe a 5000 ppm fluoride toothpaste to harden the tooth structure at the base of the crown.
Smoking impairs blood flow and the immune response. It slows down the healing of the bone around the root tip after a root canal. Smokers have a lower success rate for endodontic treatment compared to non smokers.
Quitting smoking improves the prognosis of the tooth and the health of the gums surrounding the crown.
Healthy gums are the seal that protects the underlying bone. If the gums around a crown are red, swollen, or bleeding, it indicates inflammation. This could be due to plaque, a rough crown margin, or cement left behind.
Patients should use interdental brushes or rubber tips to massage the gums and remove plaque. If bleeding persists, a professional cleaning and evaluation of the crown fit are necessary.
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Yes, you can and should use an electric toothbrush on a root canal treated tooth once the permanent crown is in place. During the temporary phase, you can use it but should be gentle. The electric brush is more effective at removing plaque from the crown margins than manual brushing.
If the tooth has a crown, whitening products will not change the color of the porcelain. If the tooth does not have a crown and has darkened from the inside, internal bleaching performed by the dentist is required to whiten it. External strips will not work on internal staining.
Floss shredding usually indicates a rough edge on the crown, excess cement, or a cavity starting at the margin. It is a warning sign. You should see your dentist to have the area smoothed or evaluated to prevent plaque buildup and decay.
You should wait until the numbness wears off to avoid biting your cheek or tongue. If a temporary filling was placed, wait at least 30 minutes for it to harden, and then avoid chewing on that side until the permanent restoration is placed.
If your root canal tooth is part of a bridge, you cannot floss down between the teeth. You must use a floss threader or “Superfloss” to thread the floss underneath the false tooth to clean the gum. A water flosser is also excellent for cleaning under bridges.
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