Understanding the Lifespan of Fillings

Understanding the Lifespan of Fillings

Dental fillings are one of the most common dental procedures. Although they are designed to last for many years, they are not a permanent solution. Over time, even the best fillings can wear down, become loose, or crack.

According to statistics, about 70% of adults in Greece have at least one filling, and 30% of those will need a replacement within 10 years. Understanding when a filling needs to be replaced is crucial for maintaining your oral health.

 

Different Types of Dental Fillings and Their Lifespan

• Amalgam (Silver Fillings):
  • Gray metallic color
  • Very durable for back teeth
  • Lifespan: 10–15 years or more
• Composite Resin (White Fillings):
  • Matches the natural color of teeth
  • Ideal for front teeth
  • Lifespan: 5–10 years
• Glass Ionomer Fillings:
  • Release fluoride
  • Less durable
  • Lifespan: about 5 years
• Gold or Porcelain Inlays/Onlays:
  • Made in a laboratory
  • Extremely durable (especially gold)
  • Lifespan: 15–20+ years

 

Factors Affecting the Lifespan of Fillings

• Location in the mouth: Fillings on back teeth are subjected to greater pressure.
• Size of the filling: Larger fillings generally wear down faster.
• Oral hygiene: Regular brushing and flossing extend the lifespan.
• Dietary habits: Hard or sticky foods can damage fillings.
• Personal habits: Teeth grinding puts extra pressure on them.
• Quality of the initial work: The dentist’s technique significantly affects durability.

 

Warning Signs That a Filling Needs to Be Replaced

Visible Signs of Wear

• Cracks or fractures in the filling.
• Discoloration at the edges of the filling.
• Obvious wear or a noticeable irregularity on the surface.
• Loose fillings that move.

Symptoms You Might Feel

• Pain or sensitivity when biting.
• Sudden pain with hot, cold, or sweet foods/drinks.
• A rough sensation when you run your tongue over it.
• Food that frequently gets “stuck” in the filling.
• Changes in your bite.

Less Obvious Signs

• New decay around the filling (often only detected by the dentist).
• Microscopic gaps that allow bacteria to enter.
• Findings on X-rays that show problems underneath the filling.

 

Risks of Delaying Replacement

Postponing the replacement of a worn-out filling can lead to:

• Secondary decay: Bacteria can enter through gaps and cause new decay under the filling.
• Further damage to the tooth: Loose fillings can allow more tooth structure to fracture.
• Need for more extensive treatment: What would have been a simple replacement can escalate to endodontic therapy (root canal) or even extraction.

 

The Filling Replacement Procedure

Replacing a filling involves the following steps:

1. Examination and diagnosis: The dentist examines the filling and may need X-rays.
2. Local anesthesia: To ensure you don’t feel any pain.
3. Removal of the old filling: With a special drill or other tools.
4. Cleaning of the cavity: Removal of any new decay.
5. Placement of the new filling: Applying the new material to the cavity.
6. Contouring and finishing: The filling is adjusted to fit the tooth.

The procedure usually takes 30–45 minutes for a simple filling, and you may experience some temporary sensitivity afterward.

 

How to Extend the Lifespan of Your Fillings

• Regular oral hygiene: Brush at least twice a day and floss daily.
• Protect your fillings: Use a night guard if you grind your teeth and avoid biting on hard objects.
• Mind your diet: Limit sticky and sugary foods, as well as acidic drinks.
• Regular dental check-ups: Visit your dentist every 6 months to have your fillings checked.

 

Conclusion: The Importance of Timely Replacement

Fillings aren’t forever, and timely recognition of problems can save you from pain, complications, and additional costs. If you notice any of the warning signs mentioned, contact your dentist for an evaluation.

Remember that even if a filling looks fine on the outside, problems may be developing under the surface. Regular dental check-ups and X-rays are essential for the early detection of such issues.

With proper care and attention, you can maximize the lifespan of your fillings and maintain a healthy smile for many years.