dental cavity - Markham dentists by 7 Days Dental

Cavities in Markham, ON

Cavities are caused by tooth decay gradually developing over time. This begins with bacteria feeding on teeth when sugars and starches are not effectively cleaned away. Plaque then forms coats teeth as a clear sticky film and eventually hardens above or below the gum line into tartar, making it more difficult to remove.

Plaque acids ultimately erode enamel until they reach the dentin, closer to the nerve and can cause sensitivity. Bacteria and acid move through the pulp, causing irritation, swelling, and pain—possibly even reaching the bone.


  • Toothache
  • Tooth sensitivity
  • Visible holes or pits in teeth
  • Pain when eating, drinking, or biting down
  • Brown, black or white stains on tooth surfaces


  • Pain
  • Tooth abscess
  • Swelling or pus around teeth
  • Damaged or broken teeth
  • Chewing problems affecting nutrition
  • Tooth loss
  • Misalignment



  • Molars and premolars: These teeth are more susceptible to cavities because they have grooves, pits, and multiple roots that can collect food particles and are harder to clean
  • Certain foods and drinks: Sugary, hard, dry, chewy, and dairy foods that saliva cannot easily wash away means they ultimately remain on teeth for more prolonged periods
  • Frequent snacking: Snack foods and sugary drinks without breaks for saliva and water to wash them away can cause acid to attack your teeth and wear down the enamel
  • Bedtime feedings: Milk, formula, or juice before bed remain on teeth while we sleep—no matter our age, we should not eat or drink anything before bed besides water
  • Inadequate brushing: Plaque forms quickly if you do not effectively clean teeth, which will lead to the initial stages of tooth decay
  • Dry mouth: Certain medications, medical conditions, radiation, or chemotherapy drugs can reduce saliva production, which may cause tooth decay when food, plaque, and acid are not being washed away
  • Weakening dental fillings or appliances: Plaque and decay can form more quickly by getting under fillings or appliances if the former is worn down and the latter are ill-fitting
  • Heartburn: Heartburn and acid reflux bring stomach acid up to your mouth, which can wear away enamel and cause tooth damage and decay
  • Eating disorders: Anorexia and bulimia may impact the production of saliva, erode enamel, and cause cavities due to stomach acid entering the mouth as a result of vomiting


Dental treatments that can help prevent cavities include:
  • Checkups and cleanings
  • Dental sealants
  • Fluoride treatments

Some additional tips include:

  • Regular brushing (with a fluoride toothpaste) and flossing
  • Drinking tap water and rinsing with fluoride
  • Healthy eating and drinking habits


Cavities in Unionville, ON, are very common among our patients! Practicing good oral hygiene will help deter them, but other factors (including even possible genetic inheritance) can cause tiny holes in your teeth to develop. At 7 Days Dental, we work with patients to achieve or maintain healthy teeth. Dental fillings, which are composite resin moulded and filled into your teeth to seal the holes, are the most effective way to treat cavities. Book an appointment now at our Markham dental office.

Book an Appointment

Fill in the form below or call us (289) 806-7337

Achieve Your Dream Smile Today!

Let us help you and your family maintain a beautiful and healthy smile.


Fill in the form below or call us

(289) 806-7337