FAQs

Below are some frequently asked questions for Irvine Endodontist Root Canal Specialist Peter D. Cancellier, DDS.  When there is a good prognosis for a long tooth life, try to save your tooth with root canal treatment, retreatment, or root end surgery at Endodontics of Orange County. You will save time, money, and chewing comfort by keeping your natural tooth.

Click on a question below to see the answer.


At the first sign of spontaneous dental pain or pain that lingers after chewing or pain after contact with cold or hot food, schedule an appointment for endodontic diagnosis with Irvine endodontist, Peter D. Cancellier, DDS, at our Endodontics of Orange County practice. Patients in pain are offered same-day evaluation and, if needed, root canal treatment.

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How To Manage A Tooth Ache Until Your Appointment

Fortunately, for those without medical restrictions, nonsteroidal anti-inflammatory drugs (NSAIDs) like ibuprofen (Advil and Motrin) and naproxen sodium (Aleve), block the production of pain stimulating factors usually created during dental pain. If approved by your doctor, take as directed. Once the pain in controlled, continue taking NSAIDs, following the manufacturers dose and time regimen.
 
Research shows that NSAIDs are more effective than narcotics. NSAIDs block the pain at the site of the pain stimulating factors. Narcotics like hydrocodone and codeine, work from the central nervous system. They make you care less about the pain, but the pain is still there. If you use a narcotic, don’t stop taking the NSAID.

Try to avoid taking any pain medication for at least four hours before your visit.

 
 

Endodontic disease is a bacterial disease. Bacteria that enter the tooth as decay, progress toward the pulp (blood vessels and nerve tissue in the center of the roots). The body’s self defense system responds with chronic inflammation.

Chronic inflammation involves specialized cells that exit the blood via the smallest blood vessels, capillaries. The capillaries open a space large enough for the defense cells to exit the blood. The defense cells defend against the bacterial assault on the pulp tissue. These chronic white blood cells work without sending information to pain receptors.

 

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Why would I need Endodontic treatment?


Endodontic treatment is necessary when the pulp becomes inflamed or infected. The most common reasons for inflammation or infection are deep cavities (caries), repeated dental procedures, cracks or chips. Trauma can also cause inflammation and often shows up as discoloration of the tooth. If pulp inflammation or infection is left untreated, it can cause pain or lead to an abscess.

Signs and Symptoms


Indications for treatment include prolonged sensitivity to heat or cold, discoloration of the tooth, swelling or tenderness of the tooth or adjacent gums. Sometimes there are no symptoms, but radiographs reveal cavities on the pulp and bone loss related to degeneration of the pulp.

 
 
 
 
 
 
 
 
 

1. If you are given a choice between root canal treatment or tooth extraction, always choose root canal treatment. Dentistry has yet to produce a denture, bridge or implant that looks, feels, and functions as well as a natural tooth.

2. If your dentist recommends tooth extraction, ask for a referral to an endodontic specialist for a second opinion.

3. If your dentist says that root canal treatment, retreatment, or root end surgery is not an option, ask why, and request a referral to Endodontics of Orange County or an endodontist near you. Endodontists are dentists who specialize in saving teeth, and have at least two years of advanced training in root canal procedures.

Dr. Cancellier is an expert at diagnosing and relieving tooth pain. He uses advanced equipment to treat patients quickly and comfortably. Your dentist probably has partnerships with endodontists in your area already. If you are uncomfortable with his recommendation, contact us for a second opinion.

 

The perception of root canals being painful began decades ago but with modern technologies and anesthetics, root canal treatment today is no more uncomfortable than having a filling placed. In fact, a recent survey showed that patients who have experienced root canal treatment are six times more likely to describe it as "painless" than patients who have not had root canal treatment.

Most patients see their dentist or endodontist when they have a severe toothache. The toothache can be caused by damaged tissues in the tooth. Root canal treatment removes this damaged tissue from the tooth, thereby relieving the pain you feel.

Never choose extraction because you think root canal treatment will be painful! Modern techniques and effective anesthesia make root canal treatment virtually painless. In fact, discomfort after the procedure is generally greater with a tooth extraction.

 
 

The myth: Patients searching the Internet for information on root canals may find sites claiming that teeth receiving root canal (endodontic) treatment contribute to the occurrence of illness and disease in the body. This false claim is based on long-debunked and poorly designed research performed nearly a century ago by Dr. Weston A. Price, at a time before medicine understood the causes of many diseases. 

In the 1920s, Dr. Price advocated tooth extraction—the most traumatic dental procedure—over endodontic treatment. This resulted in a frightening era of tooth extraction both for treatment of systemic disease and as a prophylactic measure against future illness. 

The truth: There is no valid, scientific evidence linking root canal-treated teeth and disease elsewhere in the body. A root canal is a safe and effective procedure. When a severe infection in a tooth requires endodontic treatment, that treatment is designed to eliminate bacteria from the infected root canal, prevent reinfection of the tooth and save the natural tooth. 

  • The presence of bacteria in teeth and the mouth has been an accepted fact for many years. But the presence of bacteria does not constitute "infection" and is not necessarily a threat to a person's health. Bacteria are present in the mouth and teeth at all times, even in teeth that have never had a cavity or other trauma. Research shows that the healthy immune system takes care of bacteria in a matter of minutes.
  • Tooth extraction is a traumatic procedure and is known to cause a significantly higher incidence of bacteria entering the bloodstream; endodontic treatment confined to the root canal system produces much less trauma and a much lower incidence and magnitude of bacteria entering the blood stream.
  • There is no adequate replacement for the natural tooth - it should be saved whenever possible. Root canal treatment, along with appropriate restoration, is a cost effective way to treat infected teeth because it is usually less expensive than extraction and placement of an implant. In most cases, endodontic treatment allows patients to keep their natural teeth for a lifetime.

But what about Dr. Price? This is a good example of how the Internet can give new life to long-dispelled theories. Believe it or not, the misinformation about roots canals that is found on the Internet is still based on Dr. Price’s century-old, discredited research. Dr. Price’s research techniques were criticized at the time they were published, and by the early 1930s, a number of well-designed studies using more modern research techniques discredited his findings. In 1951, the Journal of the American Dental Association took the extraordinary step of publishing a special edition reviewing the scientific literature and shifted the standard of practice back to endodontic treatment for teeth with non-vital pulp in instances where the tooth could be saved. The JADA reviewed Dr. Price’s research techniques from the 1920s and noted that they lacked many aspects of modern scientific research, including absence of proper control groups and induction of excessive doses of bacteria.

As recently as 2013, research published in JAMA Otolaryngology—Head & Neck Surgery, found that patients with multiple endodontic treatments had a 45 percent reduced risk of cancer.

 

Never choose extraction because you think it will be cheaper! When a natural tooth is extracted, it must be replaced with an artificial tooth to prevent other teeth from shifting, and to prevent future dental problems. The cost of a denture, bridge or implant, plus the extraction, often is higher than the cost of an endodontic procedure that would save the tooth for years to come.

 Most dental insurance plans usually pay 80% of the approved root canal fee. They usually pay 50% of the approved crown fee. Most dental insurance plans do not pay anything for implants.

 

Truth—Saving your natural teeth, when there is a favorable long-term prognosis, is the very best option.

Nothing can completely replace your natural tooth. An artificial tooth can sometimes cause you to avoid certain foods. Keeping your own teeth is important so that you can continue to enjoy the wide variety of foods necessary to maintain the proper nutrient balance in your diet. If your dentist recommends extraction, ask whether root canal treatment is an option.

Endodontic treatment, along with appropriate restoration, is a cost-effective way to treat teeth with damaged pulp and is usually less expensive than extraction and placement of a bridge or an implant.

Endodontic treatment also has a very high success rate. Many root canal-treated teeth last a lifetime.

Placement of a bridge or an implant will require significantly more time in treatment and may result in further procedures to adjacent teeth and supporting tissues.

Millions of healthy endodontically treated teeth serve patients all over the world, years and years after treatment. Those healthy teeth are helping patients chew efficiently, maintain the natural appearance of their smiles, and enhance their enjoyment of life. Through endodontic treatment, endodontists and dentists worldwide enable patients to keep their natural teeth for a lifetime.

 


Most cavities develop without any symptoms. That is why regular checkups are so important. Catching tooth decay promptly means only a small filling is needed.

Without regular checkups, the tooth decay progresses and the chronic inflammatory process not only defends against the bacterial assault, but also destroys healthy pulp tissue, replacing it with too many small blood vessels, and disrupting the blood flow. Now the pulp is weakened and the decay is threatening to destroy tooth structure to a level that may prevent restoring the tooth.

The acute defense cells finally enter the pulpal tissues, usually when you are especially stressed, whether from work, family, or an upcoming vacation. Finally, our body informs us of the problem by releasing the acute defense cells. A by-product of the acute inflammatory process is the production of pain stimulating factors. NSAIDS (Ibuprofen) should help, but you need to get to your dentist for examination, diagnosis, treatment, or referral to an endodontist.
 
Get an appointment as soon as you can. At Endodontics of Orange County, we accommodate emergency patients, usually on the same day of your call. On the day of your appointment, try not to take any pain medications.
 

 
 
 

Since teeth whitening has now become the number one aesthetic concern of many patients, there are many products and methods available to achieve a brighter smile.

Professional teeth whitening (or bleaching) is a simple, non-invasive dental treatment used to change the color of natural tooth enamel and is an ideal way to enhance the beauty of your smile.  Over-the-counter products are also available, but they are much less effective than professional treatments and might not be approved by the American Dental Association (ADA).

As we age, the outer layer of tooth enamel wears away, eventually revealing a darker or yellow shade.  The color of our teeth also comes from the inside of the tooth, which can become darker over time. Smoking and fluids such as coffee, tea, and wine can also contribute to tooth discoloration, making teeth yellow and dull.  Sometimes, teeth can become discolored from taking certain medications as a child, such as tetracycline.  Excessive fluoridation (fluorosis) during tooth development can also cause teeth to become discolored.

It’s important to have your teeth evaluated by your dentist to determine if you’re a good candidate for bleaching.  Occasionally, tetracycline and fluorosis stains are difficult to bleach and your dentist may offer other options, such as veneers or crowns to cover up such stains.  Since teeth whitening only works on natural tooth enamel, it is also important to evaluate any old fillings, crowns, etc. before bleaching begins.  Once the bleaching is done, your dentist can match the new restorations to the shade of the newly whitened teeth.

Since teeth whitening is not permanent, a touch-up may be needed every several years to keep your smile looking bright.

The most widely used professional teeth whitening systems:

Home teeth whitening systems: At-home products usually come in a gel form that is placed in a custom-fitted mouthguard (tray), created from a mold of your teeth.  The trays are worn either twice a day for approximately 30 minutes, or overnight while you sleep.  It usually takes several weeks to achieve the desired results depending on the degree of staining and the desired level of whitening.

In office teeth whitening: This treatment is done in the dental office and you will see results immediately.  It may require more than one visit with each visit lasting 30 to 60 minutes.  While your gums are protected, a bleaching solution is applied to the teeth.  A special light may be used to enhance the action of the agent while the teeth are whitened.

Some patients may experience tooth sensitivity after having their teeth whitened.  This sensation is temporary and subsides shortly after you complete the bleaching process, usually within a few days to one week.

Teeth whitening can be very effective and can give you a brighter, whiter, more confident smile!

If you have a tooth that looks darker than teeth around it, you either have a tooth that needs root canal treatment due to pulp necrosis (the nerve in the root canal no longer functions), or your tooth had root canal treatment in the past. The discoloration results from either the blood pigment, containing iron, that became trapped in the crown of your tooth, or else, the root canal filling materials have stained the crown..



If you have a discolored front tooth, internal bleaching may be a simpler and less expensive option than a crown or veneer. Sometimes internal bleaching requires the previously treated root canal to be retreated so the bleaching agent does not leak into the root. 

 

This is a noninvasive procedure. Make sure your treating dentist or endodontist only uses sodium perborate to bleach your tooth. It takes a few weeks to improve the shade of your tooth, but usually it will only take one or two visits to reach the desired shade.

 

 
 
 

We’re all at risk for having a tooth knocked out.  More than 5 million teeth are knocked out every year!  If we know how to handle this emergency situation, we might be able to save the tooth.  Teeth that are knocked out can possibly be re-implanted if we act quickly and follow these simple steps:

  1. Locate the tooth and handle it only by the crown (chewing part of the tooth), NOT by the roots.
  2. DO NOT scrub or use soap or chemicals to clean the tooth.  If it has dirt or debris on it, rinse it gently with your own saliva or whole milk.  If that is not possible, rinse it very gently with water.
  3. Get to a dentist within 30 minutes.  The longer you wait, the less chance there is for successful reimplantation.

Ways to transport the tooth

  • Try to replace the tooth back in its socket immediately.  Gently bite down on gauze, a wet tea bag or on your own teeth to keep the tooth in place.  Apply a cold compress to the mouth for pain and swelling as needed.
  • If the tooth cannot be placed back into the socket, place the tooth in a container and cover with a small amount of your saliva or whole milk.  You can also place the tooth under your tongue or between your lower lip and gums.  Keep the tooth moist at all times.  Do not transport the tooth in a tissue or cloth.
  • Consider buying a “Save-A-Tooth” storage container and keeping it as part of your home first aid kit.  The kit is available in many pharmacies and contains a travel case and fluid solution for easy tooth transport.

The sooner the tooth is replaced back into the socket, the greater the likelihood it has to survive.  So be prepared, and remember these simple steps for saving a knocked-out tooth.

You can prevent broken or knocked-out teeth by:

  • Wearing a mouthguard when playing sports
  • Always wearing your seatbelt
  • Avoiding fights
  • Avoid chewing hard items such as ice, popcorn kernels, hard breads, etc.

Go to www.dentaltraumaguide.org for specific guidelines, but also call your dentist or endodontist now.


Four out of five people have periodontal disease and don’t know it!  Most people are not aware of it because the disease is usually painless in the early stages.  Unlike tooth decay, which often causes discomfort, it is possible to have periodontal disease without noticeable symptoms.  Having regular dental check-ups and periodontal examinations are very important and will help detect if periodontal problems exist.

Periodontal disease begins when plaque, a sticky, colorless, film of bacteria, food debris, and saliva, is left on the teeth and gums.  The bacteria produce toxins (acids) that inflame the gums and slowly destroy the bone.  Brushing and flossing regularly and properly will ensure that plaque is not left behind to do its damage.

Other than poor oral hygiene, there are several other factors that may increase the risk of developing periodontal disease:

  • Smoking or chewing tobacco – Tobacco users are more likely than non-users to form plaque and tartar on their teeth.
  • Certain tooth or appliance conditions – Bridges that no longer fit properly, crowded teeth, or defective fillings that may trap plaque and bacteria.
  • Many medications – Steroids, cancer therapy drugs, blood pressure meds, oral contraceptives.  Some medications have side affects that reduce saliva, making the mouth dry and plaque easier to adhere to the teeth and gums.
  • Pregnancy, oral contraceptives, and puberty – Can cause changes in hormone levels, causing gum tissue to become more sensitive to bacteria toxins.
  • Systemic diseases – Diabetes, blood cell disorders, HIV / AIDS, etc.
  • Genetics may play role – Some patients may be predisposed to a more aggressive type of periodontitis.  Patients with a family history of tooth loss should pay particular attention to their gums.

Signs and Symptoms of Periodontal Disease

  • Red and puffy gums – Gums should never be red or swollen.
  • Bleeding gums – Gums should never bleed, even when you brush vigorously or use dental floss.
  • Persistent bad breath – Caused by bacteria in the mouth.
  • New spacing between teeth – Caused by bone loss.
  • Loose teeth – Also caused by bone loss or weakened periodontal fibers (fibers that support the tooth to the bone).
  • Pus around the teeth and gums – Sign that there is an infection present.
  • Receding gums – Loss of gum around a tooth.
  • Tenderness or Discomfort – Plaque, calculus, and bacteria irritate the gums and teeth.

Good oral hygiene, a balanced diet, and regular dental visits can help reduce your risk of developing periodontal disease.


Brushing our teeth removes food particles, plaque, and bacteria from all tooth surfaces, except in between the teeth.  Unfortunately, our toothbrush can’t reach these areas that are highly susceptible to decay and periodontal (gum) disease.

Daily flossing is the best way to clean between the teeth and under the gumline.  Flossing not only helps clean these spaces, it disrupts plaque colonies from building up, preventing damage to the gums, teeth, and bone.

Plaque is a sticky, almost invisible film that forms on the teeth.  It is a growing colony of living bacteria, food debris, and saliva.  The bacteria produce toxins (acids) that cause cavities and irritate and inflame the gums.  Also, when plaque is not removed above and below the gumline, it hardens and turns into calculus (tartar).  This will further irritate and inflame the gums and will also slowly destroy the bone. This is the beginning of periodontal disease.

How to floss properly:

  • Take 12-16 inches (30-40cm) of dental floss and wrap it around your middle fingers, leaving about 2 inches (5cm) of floss between the hands.
  • Using your thumbs and forefingers to guide the floss, gently insert the floss between teeth using a sawing motion.
  • Curve the floss into a “C” shape around each tooth and under the gumline.  Gently move the floss up and down, cleaning the side of each tooth.

Floss holders are recommended if you have difficulty using conventional floss.

Daily flossing will help you keep a healthy, beautiful smile for life!


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