Accessible Version
Palos Pediatric Dentistry

How Do Cavities Form? Part III: Time

February 28, 2017
|
Posted By: Dr. Richard Facko
toddler brushing her teeth | pediatric dentist palos heights | kids dentist palos heights

We’ve described two of the necessary factors for the formation of tooth decay, specifically sugar and bacteria.  The third factor, time, will be today’s subject.  All three are necessary for cavities to form.  The better we understand about the formation of cavities, the better we can make recommendations for prevention and treatment.

What does bacteria have to do with cavities?

Cavity-causing bacteria feed on the things we eat.  They grow best under sugary conditions.  A cavity forms when specific bacteria consume sugar.  The byproduct of their metabolism is acid.  This acid is secreted onto the surface of a tooth and does microscopic damage.  Over time, if these bacteria are left undisturbed, the prolonged exposure to acid causes a hole, or “cavity”, in the tooth.

How do I prevent tooth decay from bacteria?

Tooth decay does not happen overnight; it is not an acute condition.  It occurs when these bacteria remain undisturbed, in the same place, for long periods of time.  The best way to disturb the cavity-causing bacteria is to remove them mechanically, with a toothbrush!  This is why we recommend brushing twice per day, for two minutes, with fluoride toothpaste.  Eliminating bacteria from the surface of a tooth gives the tooth a chance to recover from the acid exposure.  Minerals in our saliva, namely calcium and phosphate, help to remineralize or “heal” the acid damage.  Fluoride also plays a major role in healing damage from acid.

Bacteria, if left undisturbed for long periods of time, can cause tooth decay.  But also the more often that those bacteria are fed, the faster they multiply!  This is why we always discuss minimizing the “time of exposure” to sugary foods and drinks.  One habit in particular – fruit juice frequently throughout the day – gives those bacteria exactly what they want, and allows them to multiply at a much faster rate.  Minimizing exposure to sugar and carbohydrates to three meals and two snacks per day is a great way to prevent tooth decay!

Now that we’ve made it through all three factors, you can see what is necessary for cavities to form.  Lots of sugar for a long time, but no cavity-causing bacteria present, and no cavities will form!  No brushing, plenty of cavity-causing bacteria, but no sugar?  No cavities!  In reality, those situations can’t happen.  But if we continually try to improve in all three areas, we can be assured that we’re doing everything possible to prevent cavities for our kids!

Contact Our Kids' Dentist Office in Palos Heights, IL Today!

Contact our local pediatric dentistry office today to schedule an appointment for your child. 

Related Blog Posts
June 17, 2025
Choosing the Best Children’s Dentist in Palos Heights
Mother and Child | Pediatric Dentist Palos Heights

Updated on September 16, 2025

Choosing a dentist for your child is a big decision. As a parent, you want a provider who not only cares for their teeth but also makes them feel safe and comfortable. At Palos Pediatric Dentistry, we've helped over 8,000 families in Palos Heights create positive dental experiences for their children.

Here are four key factors to consider when choosing the right dental home for your kids.

1. Specialized Pediatric Expertise

A child's dental needs ...

January 9, 2025
5 Dental New Year’s Resolutions for Parents in Palos Heights
Girl smiling at dentist in dental office, palos heights il

2025 is here, and it's time to talk about dental New Year's resolutions! Nothing is more precious than your child's healthy smile; we know you're committed to protecting it as a parent. So, here are some helpful tips and smile resolutions to guide your focus for 2025.

#1 Schedule Regular Pediatric Dental Checkups

Did you know your child should visit their dentist every six months just like you do? It's true! Routine dental checkups and teeth cleanings are ...

October 8, 2024
Has Your Child Not Been to the Dentist in Years? Here's What to Expect
Dentist checking a kids mouth, palos heights IL

Being a parent is hard. You’re responsible for your child’s health and well-being, but sometimes, the stress of work, finances, and everyday life makes it feel impossible to be a good parent. At Palos Pediatric Dentistry, we understand how a busy schedule, financial stress, or dental anxiety might keep you from taking your child to the dentist.

We want you to know that we’re here to help and don’t want you to feel embarrassed or ashamed if you haven’t taken your child to the dentist in five, ten, or even 15 years. Although we may ask for a consultation before starting any dental work, it’s ...

If you have difficulty using our website, please email us or call us at (708) 263-6708
View the ADA Accessibility Statement
Disclaimer: The information throughout this site is not intended to be taken as medical advice.