Painfree Dentistry
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The Stages of Tooth Decay: From Enamel Erosion to Cavities

May 24, 2025
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Posted By: Painfree Dentistry
man with toothache from tooth decay

You likely know brushing, flossing and regular checks and cleans reduce tooth decay risks. But do you know why?

This blog explores the stages of tooth decay and highlights the importance of prevention as your best ally.

The Sneaky Start to a Common Problem

Stage 1: Deminerilisation: The First Attack

Your dental enamel loses valuable minerals that keep it strong when it is exposed to acid. Common culprits include:

  • Poor oral hygiene
  • Acidic foods and drinks
  • Sugary foods and drinks

Stage 2: Enamel Erosion: A Visible Sign

Without professional teeth cleans, the acids erode your tooth enamel, making it easier for a cavity to form. You may start to notice tooth discolouration as plaque hardens into tartar.  

Stage 3: Dentin Decay: Reaching the Inner Layer

When erosion penetrates the enamel and reaches the inner layer of your tooth, you have a cavity. Failure to treat the cavity can lead to a painful abscess or infection, requiring root canal therapy. Also, advanced decay can cause the tooth to crumble.

Stage 4: Pulp Involvement: The Core Is Affected

When tooth decay, infection, and inflammation reach the pulp, root canal therapy relieves the pain and prevents the infection from spreading.

Signs of tooth root infection include:

  • Toothache
  • Swelling
  • Gum Blister

Stage 5: Abscess Formation: Infection Spreads

An abscessed tooth is a dental emergency in Parramatta. If you have signs of a tooth root infection, contact our dental clinic as soon as possible.

Ways to Help Prevent Decay and Infections

  • Visit your dentist regularly for exams and cleans.
  • Brush and floss at least twice daily.
  • Wear a nightguard if you grind your teeth.
  • Report oral health changes to our dental team.

Keep Your Teeth Healthy with Your Dentist in Parramatta

To learn more or to book a consultation with the dentist, please call (02) 9635 5166. Remember to check out our current dental specials for potential savings.