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ORAL CANCER

If you’re like most Canadians, you probably don’t know much about oral cancer. You may associate it as something that only happens to tobacco-chewing baseball players, like Babe Ruth, but the truth is that over 3,000 Canadians are diagnosed with this life-threatening condition every year. The good news is that when detected early, oral cancer has an 80% to 90% survival rate. 

“In dentistry, oral cancer has always been a serious concern,” says Dr. Alastair Nicoll, President of the British Columbia Dental Association. “But it has not really been on the radar screen of Canadians.” Most oral cancers begin in the cells on the surface of the tissue of the mouth. They are shallow but over time penetrate deeper into the tissue and potentially the bone. If caught early, they can be treated while still a surface problem. The bad news is that the majority of oral cancers are detected as late stage disease, when it is most difficult to treat. According to Dr. Simon Sutcliffe, President of the BC Cancer Agency, one-third of Canadians diagnosed with oral cancer die within five years for precisely this reason.

“Tobacco use is the primary cause of oral cancer,” says Dr. Nicoll, “including smoking cigarettes, pipes and cigars, smokeless tobacco, and chewing tobacco.” Excessive use of alcohol also increases risk and is a factor in oral cancer for 75% of Canadians diagnosed with the disease. Too much exposure to the sun is a key risk factor for cancers on the lips. At the same time, 25% of oral cancer patients don’t share these habits, so it’s important for everyone to know how to spot problems:
    • White or red patches anywhere in the 
       mouth
    • Mouth sore that bleeds easily and/or won’t 
       heal
    • Bleeding in the mouth
    • Loose teeth or dentures that stop fitting
    • Pain or problems swallowing
    • Lump in the neck
    • Persistent earache.

Your dentist is trained to care for all aspects of oral health. Conducting cancer checks at regular appointments and more elaborate screening for higher risk patients is the first step to early detection. Educating patients about the risks of certain behaviours and how to detect a potential problem is also an essential role for dentists. “As dentists, we have the specialized training, equipment and facilities to offer the best care for the mouth,” says Dr. Nicoll. “It’s not easy to see into the mouth properly, in your bathroom or in your doctor’s office. In the dental office, we have the right equipment, lighting and tools to see every area fully so we can be sure to check every area of the mouth.” 

putting 
FEAR TO REST
Public speaking may be the number one fear for most, but visiting the dentist ranks highest on the list of things to avoid for some Canadians. Without question, worry about the unknown or lingering memories from past experiences in the dental chair prevent some people from getting regular checkups and from seeking treatment when they have problems in their mouths. But is there any reason for fear anymore?

Those who have been avoiding the dentist’s office might be surprised to learn that modern dentistry is very different in many ways. According to Dr. Deborah Stymiest, President of the Canadian Dental Association, “Technology and equipment have revolutionized treatment such that it can be a virtually pain-free experience.”

At the same time, the philosophy of dentists has shifted to make patient education a priority. “We are here to work with our patients to develop strategies to cope with their fears so that they can get the care they need,” says Dr. Stymiest. Tell your dentist what you are most apprehensive about. Once specific concerns are identified, you and your dentist can address these fears. 

“The first step for an apprehensive patient is to acknowledge their fears,” says Dr. Joel Antel of the Manitoba Dental Association. “Arrange a dental appointment to discuss what concerns you most and to develop strategies to cope with treatment. It’s easy to be afraid of something you don’t know about.”

Your first appointment may not involve any treatment. You may not even have your teeth cleaned. It could be limited to a discussion of your apprehension and planning to overcome this barrier to a lifetime of dental health. 

Delaying treatment because of fear is common. According to Dr. Stymiest, however, even a minor oral health problem can become a very serious and complicated problem if left untreated. “Since oral health is an important part of overall health, you shouldn’t ignore a problem in your mouth,” says Dr. Stymiest. “Poor oral health can affect a person’s quality of life unnecessarily.”

If you suffer from dental anxiety, talk to your dentist. Your dentist is your partner in your oral health and can devise strategies to make you relaxed and comfortable during your dental visits.

 strong tooth enamel - THE BEST DEFENCE

Ever wonder how teeth break down – or more importantly – how to prevent them from breaking down? Teeth are covered with a protective enamel surface that keeps them hard and strong so that they can do their job for many decades. This precious enamel can fall into disrepair in a few ways – by dental erosion, dental wear and tooth decay.

Dental erosion occurs when enamel dissolves as a result of direct contact with acidic foods or beverages such as soft drinks, sports drinks and vinegary foods. Dental wear occurs when enamel is worn away due to friction in the mouth from clenching or grinding teeth. This usually occurs during sleep.

During your checkup, your dentist will check your mouth for signs of dental erosion and dental wear. “Signs of dental erosion occur on the tongue side of the teeth, whereas signs of dental wear occur in a couple of key areas,” reports Dr. Larry Levin, President of the Ontario Dental Association, “including the chewing surface or at the neck of the teeth where small notches develop at the gum line.”

To prevent further damage, your dentist may suggest modifying the behaviour that caused it in the first place. This may include making dietary changes to reduce your consumption of acidic foods and beverages should your teeth show signs of erosion. If your teeth show signs of wear, your dentist may suggest you be fitted with a nighttime mouthguard to prevent your teeth from wearing further.

In the case of tooth decay, organisms called cariogenic bacteria live on the surface of our teeth all of the time. When we consume sugar (of any kind!), the bacteria feast on it and metabolize it as acid.  If left, the acid then sits on our teeth and dissolves the tooth structure. Once the bacteria penetrate the enamel, it works quickly to decay inner layers of the tooth. This is when a cavity occurs. Dr. Levin reports that what often looks like a very small issue from the outside is a much bigger problem inside. 

The damage that sugar does depends on how much and how often it is eaten, when it is eaten and how long it stays in your mouth. When we brush and floss, we remove sugar and plaque, which prevent the formation of acid. However, the process starts all over again as soon as we eat or drink something containing sugar, even natural sugars like honey and fruit. To prevent cavities, we must limit how often we consume sugar. Suggests Dr. Nicoll, “The frequency is more important than the amount of sugar consumed. If someone is eating continually throughout the day, his or her teeth are constantly under assault from the acid cycle. Even if they practice good oral hygiene, their teeth are living in a stressful and damaging environment.”

Fluoride is also a key to prevention and treatment, for both erosion and decay. “Fluoride treatments help strengthen the enamel on the tooth to resist erosion and decay,” says Dr. Levin.  “Even though some communities are moving away from putting fluoride in drinking water, as dentists, we still consider it to be one of the best health maintenance and preventive measures.”

If left untreated, dental erosion, dental wear and tooth decay can result in serious oral health problems. 







 Oral Health Resources
 There are many national and provincial dental associations offering extensive oral-care 
 information.


Canadian Dental Association
www.cda-adc.ca/



British Columbia Dental Association
www.bcdental.org/


Alberta Dental Association and College
www.abda.ab.ca/

College of Dental Surgeons of Saskatchewan
www.saskdentists.com/

Manitoba Dental Association
www.manitobadentist.ca/

Ontario Dental Association
www.youroralhealth.ca/

Order of Dentists of Quebec
www.odq.qc.ca/

Newfoundland and Labrador Dental Association
www.nlda.net/

New Brunswick Dental Society
www.nbdental.com/

Nova Scotia Dental Association
www.healthyteeth.org/
www.nsdental.org
Dental Association of Prince Edward Island
www.dapei.ca

Northwest Territories/Nunavut and Yukon Dental Associations

Dental Specialty Associations in Canada
Canadian Association of Public Health Dentistry
www.caphd-acsdp.org

Canadian Academy of Endodontics
www.caendo.ca

Canadian Association of Oral and Maxillofacial Surgeons
www.caoms.com

Canadian Academy of Oral and Maxillofacial Pathology and Oral Medicine
www.cda-adc.ca/jcda/vol-69/issue-9/568.pdf

Canadian Academy of Oral and Maxillofacial Radiology

Canadian Association of Orthodontists

www.cao-aco.org

Canadian Academy of Pediatric Dentistry
www.capd-acdp.org

Canadian Academy of Periodontology
www.cap-acp.ca

Association of Prosthodontists of Canada
www.prosthodontics.ca



Dental specialties
If the treatment you need or want is complex, you or your dentist may be more comfortable if you see a dental specialist. There are 9 specialties in Canada:
• Dental Public Health • Endodontics • Oral and Maxillofacial Surgery • Oral Medicine and Pathology • Oral & Maxillofacial Radiology • Orthodontics and Dentofacial Orthopedics • Pediatric Dentistry • Periodontics • Prosthodontics


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