Our Blog

Understanding Cavities

October 15th, 2013

Getting a cavity seems like delayed punishment for eating that special dessert every weekend or for the few days you forgot to floss. When you are doing everything right with minimal exception and a cavity is diagnosed, it is discouraging. Knowing how cavities form and what causes them is valuable in knowing how to prevent them. In this blog post, Dr. Tang will help you understand cavities!

A cavity is not a one-time event. It is actually a symptom of a disease called caries. Tooth decay is a result of an active infection and condition in the mouth. There are ingredients to this infection, which include bacteria, acid, your tooth, and a food source. The main bacterial culprit is S. Mutans. Bacteria live in a housing structure called biofilm. This offers them protection, food, and an ideal replicating environment.

Biofilm can be healthy if there is a balance of good bacteria. When you have caries, the numbers of “bad” bacteria increase and produce an environment where they thrive and therefore cause tooth decay. A main indicator of this is a pH measurement of your saliva.

Several factors can influence the biofilm pH. Foods and beverages all have different pH levels. The lower the number, the higher the acidity. Since acid promotes tooth decay, a beverage like soda will promote a cavity. Water, being neutral, is a good choice to promote healthy oral pH. Healthy eating can still cause cavities. Here is an example of a highly acidic, yet traditionally healthy meal:

Toast with store-bought strawberry jam, and a cup of cottage cheese topped with fresh cranberries.

Instead, here is a better choice, which involves mixing acidic healthy foods with alkaline (non-acidic) foods to reduce the overall pH:

Toast with almond butter, and Greek yogurt topped with fresh blueberries.

The first example will result in a very low pH in the mouth and even in the rest of the body. The second meal mixes highly acidic blueberries with an alkaline Greek yogurt. Dairy products from cows are highly acidic. Toast is acidic because of the yeast and almonds are alkaline.

A natural buffer is saliva. Whenever mouth breathing or medications compromise the saliva flow, the pH is going to drop and caries can go rampant. Getting a cavity is not just about the sweets or forgotten flossing sessions. It is about the pH levels and bacterial management.

What is baby bottle tooth decay?

October 8th, 2013


Great question! Baby bottle tooth decay is the development of cavities caused by the frequent and long-term exposure of a child’s teeth to liquids containing sugars. These liquids include milk, formula, fruit juice, sodas and other sweetened drinks. The bacteria in the mouth thrive on this sugar and produce acids that attack the infant’s teeth and gums. After numerous attacks, tooth decay can begin.

The first rule is to make sure your child does not fall asleep with a bottle containing milk, formula, juice or other sweetened liquids. Giving an infant a sugary drink before bedtime is harmful because the flow of saliva decreases during sleep, allowing the sugary liquids to linger on the child’s teeth for an extended period of time. If left untreated, pain and infection can result.

So, how can you prevent baby bottle tooth decay? Be sure to clean and massage the baby’s gums once a day to help establish healthy teeth and to aid in teething. When brushing your child’s teeth, use a soft toothbrush, as well non-fluoride toothpaste. Once your little one is able to spit, around the age of two, you should begin using fluoride toothpaste. From the beginning, have your little one practice spitting the toothpaste out after brushing. That way, he or she will already have the good habit of spitting when you switch to fluoride toothpaste, which should never be swallowed.

Also, be aware that children should visit Just 4 Kids Pediatric Dentistry when they are between six and 12 months old. Your child’s first visit before one year of age is complimentary! Please give us a call if your child hasn’t visited our Surrey, BC office in the last six months!

They're Just Baby Teeth . . .

October 1st, 2013

“But they are only baby teeth; won’t they will just fall out.” Our team at Just 4 Kids Pediatric Dentistry has had these questions asked many times from parents over the years. Primary teeth, or “baby teeth,” will indeed come out eventually, to be replaced by permanent teeth as the child grows and develops. These teeth serve a great purpose as the child continues to develop and require specific care.

Because baby teeth are temporary, some parents are unenthusiastic about fixing cavities in them. This may be due to the cost or having to force a child undergo the process—especially having to receive an injection. But if a cavity is diagnosed early enough, an injection can often be avoided. More important, failure to fill cavities in primary teeth when they are small and manageable can have lasting consequences in cost and health concerns. Serious illnesses in children have been diagnosed which began as a cavity.

Primary teeth act as a guide for permanent teeth. When decay reaches the nerve and blood supply of a tooth, this can cause an abscess. Severe pain and swelling may result. At that point, the only treatment options are either to remove the tooth or to perform a procedure similar to a baby root canal. When a primary tooth is lost prematurely—to decay or a painful abscess—the adjacent teeth will often shift and block the eruption of a permanent tooth. Braces or spacers become necessary to avoid crowding or impaction of the permanent tooth.

There is nothing more heartbreaking for Dr. Tang than to have to treat a child experiencing pain and fear. To all the parents of my little patients our team strongly recommend filling a small cavity and not waiting until it becomes a larger problem such as those described above.

Prevention is the key to a healthy mouth for our smallest patients. Parents should allow the child to brush his or her teeth using a pea-sized amount of fluoride toothpaste and then take a turn to ensure the plaque gets removed from all surfaces: cheek side, tongue side, and chewing edges of all the teeth.

Fluorosis: What is it?

September 24th, 2013

Many people think dental fluorosis is a disease, but it’s not; it’s a condition that affects the appearance of your tooth’s enamel, not the function or health of the teeth. These changes may vary from tiny, white, barely noticeable spots to very noticeable staining, discoloration, and brown markings. The spots and stains left by fluorosis are permanent and may darken over time.

Dental fluorosis occurs in children who are excessively exposed to fluoride between 20 and 30 months of age. Only children ages eight years and younger can develop dental fluorosis. Why? That is the period when permanent teeth are still developing under the gums. For kids, fluorosis can cause significant embarrassment and anxiety about the appearance of their teeth. No matter how much they might brush and floss, the fluorosis stains do not go away.

Many well-known sources of fluoride may contribute to overexposure, including:

  • Fluoridated mouth rinse, which young children may swallow
  • Bottled water which is not tested for fluoride content
  • Inappropriate use of fluoride supplements
  • Exposure to water that is naturally or unnaturally fluoridated to levels well above the recommended levels

One way to reduce the risk for enamel fluorosis is to teach your children not to swallow topical fluoride products, such as toothpaste that contains fluoride. In fact, kids should use no more than a pea-sized amount of fluoride toothpaste when brushing, and children under the age of two should not use any fluoride toothpaste without consulting their dentists.

Dental fluorosis can be treated with tooth bleaching, microabrasion, and conservative composite restorations or porcelain veneers. Please give us a call at our office to learn more or to schedule an appointment with Dr. Tang.

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