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Parents, and even older children, can become concerned about tooth development. Wondering when teeth should erupt, and being concerned when the teeth do not appear on schedule, is common. First, you need to remember that each individual is different. Guidelines are just guidelines, but Dr. Varble, Dr. Appelbaum, Dr. Dill and Dr. Wong and our team at SmileKidz thought we would pass on this information to help you.

Primary teeth

Children normally have 20 primary or baby teeth. The first two to appear are usually the lower central incisors between six to ten months of age. These fall out between five and seven years of age.

• Two upper central incisors – eight to 12 months
• Two upper lateral incisors – nine to 13 months
• Two upper cuspids or canines – 16 to 22 months
• Two upper first molars – 13 to 19 months
• Two upper second molars – 25 to 33 months
• Two lower lateral incisors – ten to 16 months
• Two lower cuspids or canines – 17 to 23 months
• Two lower first molars – 14 to 18 months
• Two lower second molars – 13 to 31 months

As you can see, all the primary teeth normally have erupted before three years of age, but the timeline can vary by four to six months. Except for the lower central incisors and second molars, upper teeth tend to appear before lower teeth.

Permanent or adult teeth

Adults normally have 32 permanent teeth. However, four of these are wisdom teeth or third molars, which are often removed.

• Two upper central incisors – seven to eight years
• Two upper lateral incisors – eight to nine years
• Two upper cuspids or canines – 11 to 12 years
• Two upper first premolars or bicuspids – ten to 11 years
• Two upper second premolars or bicuspids – ten to 12 years
• Two upper first molars – six to seven years
• Two upper second molars – 12 to 13 years
• Two upper third molars or wisdom teeth – 17 to 21 years
• Two lower central incisors – six to seven years
• Two lower lateral incisors – seven to eight years
• Two lower cuspids or canines – nine to ten years
• Two lower first premolars or bicuspids – ten to 12 years
• Two lower second premolars or bicuspids – 11 to 12 years
• Two lower first molars – six to seven years
• Two lower second molars – 11 to 13 years
• Two lower third molars or wisdom teeth – 17 to 21 years

Please discuss any of your dental concerns during your visit with Dr. Varble, Dr. Appelbaum, Dr. Dill and Dr. Wong. If there is a problem with tooth development, the earlier we address it, the better the outcome. We specialize in pediatric dentistry and look forward to helping you and your child with all your dental needs. To learn more about tooth eruption, or to schedule an appointment with Dr. Varble, Dr. Appelbaum, Dr. Dill and Dr. Wong, please give us a call at our convenient Creve Coeur, MO and St. Charles, MO office!

If you were to put your toothbrush bristles under a high-powered microscope, what you would see might give you nightmares: millions of bacteria, busily crawling up and down your toothbrush bristles, consuming proteins that came from your mouth, and still clinging to the bristles even after you’ve rinsed them with water.

Rinsing your toothbrush after brushing removes some of those ferociously hungry bacteria, but not all. The American Dental Association says that bacterial infestations develop on toothbrushes within a month of daily use. The ADA also states that unless a toothbrush is sterilized before being packaged, it’s going to come with bacteria – free of charge!

Germs and Frayed Bristles: the Demise of a Toothbrush

Dr. Varble, Dr. Appelbaum, Dr. Dill and Dr. Wong and our staff recommend that you toss your old toothbrush in the trash and purchase a new one every three months. Children tend to bite on their toothbrushes, which makes the bristles degrade and fray faster. Chances are kids may need to have their toothbrushes changed more frequently.

Where do they hide?

Bacteria are tenacious little germs that head for those concealed areas between toothbrush bristles. They are highly adaptable and exist in every type of extreme environment. Some people actually go so far as to put their toothbrush in a microwave for a few seconds to kill germs, but this doesn't always work either. In fact, you may only end up with a toothbrush that’s as bendable as a Gumby doll – and still covered with germs.

Feed a Cold, Starve a Fever, and Get Rid of Your Toothbrush

When you have a head cold, your mouth is teeming with bacteria gleefully roaming around, and gobbling mucus and dead skin cells. If you brush your teeth while suffering a sinus condition, the brush will act like a magnet for ravenous bacteria. Use your old toothbrush while you are sick, but as soon as you feel better, throw it away and get a new one. Otherwise you could possibly re-infect yourself with the same cold germs!

Come say hello twice a year. The American Dental Association says two times is the charm. Multiple visits a year lets us keep an eye out for any developing issues. It’s important to remember that this goes for the whole family. Children over one year old should be seeing Dr. Varble, Dr. Appelbaum, Dr. Dill and Dr. Wong!

Stay fresh. At SmileKidz, we have a virtually unlimited stock of toothbrushes and floss, which means you have no excuse to be using a sad, ineffective toothbrush. As soon as bristles begin to fray, pick up a new one or stop by our Creve Coeur, MO and St. Charles, MO office and we’ll replace yours. On average, you should be opening a new one every two to three months.

For goodness sake, floss! Flossing is an efficient way to keep your whole mouth healthy. It not only protects your teeth by removing aggregated plaque, it keeps your gums happy, too.

And brush. Practicing regular healthy habits is essential to keeping your mouth—and us—happy! When it comes to brushing that means two minutes, two times a day. If your kids need some encouragement, try making a calendar or playing a song like this.

Tell a friend. One way you can help us is by spreading the love. Tell your friends about what a good thing we’ve got going here. The more the merrier. And the healthier.

One of the most charming aspects of your baby’s beautiful smile is his brilliantly white teeth. But now that his adult teeth are coming in, the difference in color is very noticeable. Is this something to be concerned about? Happily, probably not.

Both baby teeth and adult teeth have the same basic structure. The inside of the tooth, the pulp, contains blood vessels and nerves. The pulp is covered by a layer of dentin, a hard, yellowish substance composed of living tissue that helps protect the pulp and transmits signals for pain, pressure, and temperature. Enamel is the outer protective covering of the tooth, and its natural color can vary from greyish-white to light yellow.

If primary and permanent teeth are so alike, how can they look so different? As with so many things, the difference lies in the details. In adult teeth, enamel is semi-translucent, so it will allow the color of what is beneath it to show through. And the color of the thick dentin beneath is naturally yellow. Baby teeth have a thinner layer of the yellowish dentin. And while their enamel is also thinner, the enamel in baby teeth is generally whiter and more opaque, so less of the underlying yellow from the dentin is visible.

The result of these small differences is that adult teeth are normally darker than baby teeth to begin with. And when a permanent tooth that is just a bit darker erupts next to a bright white baby tooth, it is going to look even more yellow than it actually is. Once all of the baby teeth in front have been replaced with adult teeth, you will have a much better idea of their real color without unflattering comparisons!

There are times when concerns about tooth color should be looked at by Dr. Varble, Dr. Appelbaum, Dr. Dill and Dr. Wong more closely.

• Unusual discoloration in teeth should be examined. Some discoloration is caused by medical conditions such as hypomineralization, some by environmental factors such as excess fluoride, some by trauma, some by medication. If you notice a discolored section of your child’s tooth, or the tooth has turned a different shade from the teeth around it, give us a call.
• Your child might have naturally whiter or yellower teeth simply as a matter of genetics. If your child is self-conscious about the color of his teeth, we can talk about whitening solutions when he is old enough to use them safely. Home whitening products should never be used on young children.

Give yourself time to adjust to your child’s new, adult smile. You will probably notice no difference at all once all of his permanent teeth come in. And keep those new teeth their brightest with consistent brushing and flossing, and regular checkups and cleanings at our Creve Coeur, MO and St. Charles, MO office. This is the simplest prescription for a charming, white, and healthy smile at any age.