FRISCO 214-618-5200 | McKINNEY 214-436-5555 | Prosper 469-228-4402 REQUEST APPOINTMENT
What Causes Cavities and How Tooth Decay Is Treated

What Causes Cavities and How Tooth Decay Is Treated

Reviewed by Dr. David Sentelle, DMD, PhD, MPH

Tooth decay is a common dental condition that can affect children at any stage of development. Cavities form gradually and may not be noticeable at first. Learning how tooth decay develops and how it is treated helps explain why early detection and routine dental care are important.

We care for growing smiles in Frisco, McKinney, and Prosper, TX with gentle, kid-focused dental care.

Table of Contents

What Are Cavities (Dental Caries)?

Cavities are areas of tooth damage caused by acids produced when bacteria feed on sugars and starches left on teeth. Over time, those acids weaken enamel and create small holes in the tooth structure.

In children, cavities can progress faster than in adults because baby teeth have thinner enamel. That’s why early detection and prevention matter so much during childhood.

What Causes Cavities in Kids?

Cavities rarely come from one single habit. They usually develop from a combination of biology, diet, and daily routines working together over time.

Common contributors include:

  • Cavity-causing bacteria: Some children naturally carry higher levels of decay-causing bacteria.
  • Frequent sugar exposure: Snacks, juice, milk at bedtime, and sticky foods feed bacteria.
  • Incomplete brushing: Young kids often miss back teeth and gumlines.
  • Weak or thin enamel: Genetics can make enamel more vulnerable.
  • Dry mouth: Reduced saliva limits the mouth’s natural defense against acids.

Early Signs of Cavities

Cavities do not always cause pain at first. Many start quietly and worsen over time.

Watch for these early warning signs:

  • White or chalky spots on teeth
  • Brown or dark discoloration
  • Sensitivity to cold, sweet, or hot foods
  • Food getting stuck in the same spot repeatedly
  • Complaints of chewing discomfort
  • Bad breath that doesn’t improve with brushing

Regular dental exams catch cavities before they turn into bigger problems.

How to Prevent Cavities in Kids

Prevention works best when daily habits and professional care support each other. 

Cavity-prevention basics include:

  • Brush twice daily with fluoride toothpaste
  • Help children brush until they have strong coordination
  • Floss once daily once teeth touch
  • Limit frequent snacking and sugary drinks
  • Offer water between meals
  • Schedule regular dental exams and cleanings

Your dentist may also recommend dental sealants or additional fluoride treatments based on your child’s risk level.

Turning Knowledge Into Healthy Smiles

If you have concerns about cavities or notice changes in your child’s teeth, a dental evaluation can help determine the next appropriate steps. 

To book an appointment at our pediatric dental office in Prosper, TX, call (469) 228-4402, request an appointment online, or visit us at 240 S. Preston Road, Suite 10 Prosper, TX 75078.

📍Other locations

Lonestar Kid’s Dentistry in Frisco, TX

Lonestar Kid’s Dentistry in McKinney, TX

FAQ

Are cavities common in children?

Cavities are one of the most common childhood health conditions. Even with good oral hygiene, kids can still develop decay due to factors like enamel strength, diet, and natural bacteria levels.

Can cavities go away on their own?

Once damage begins, the tooth cannot repair itself. Early cavities may be slowed with professional care, but weakened tooth enamel needs dental intervention to prevent progression.

How early can kids get cavities?

Cavities can develop as soon as teeth erupt. Frequent exposure to sugary snacks or drinks increases risk, especially when teeth are still developing.

Back To Top