Dental Fillings Explained: Materials, Process, and Aftercare
Composite, amalgam, or ceramic? What to expect when you need a filling, and how to make it last for years.
A filling is the most common dental repair there is — and usually a quick, routine one. If you've been told you need a filling, here's what the materials mean and what to expect in the chair.
Why you need a filling
Decay creates a cavity in the tooth. Your dentist removes the decayed tissue and fills the space to restore the tooth's shape and strength, and to stop the decay from spreading deeper.
Filling materials compared
- Composite (tooth-coloured resin) — natural-looking and bonds directly to the tooth. The most popular choice today.
- Amalgam (silver) — extremely durable and affordable, but visible. Less used where appearance matters.
- Ceramic / porcelain — strong and highly stain-resistant, at a higher cost.
- Glass ionomer — releases fluoride and is often used for children or near the gum line.
What happens during the procedure
- Numbing the area with local anaesthetic.
- Removing the decayed portion of the tooth.
- Cleaning and shaping the cavity.
- Placing and hardening (curing) the filling.
- Checking and adjusting your bite.
Mild sensitivity to hot or cold for a few days afterward is normal. Pain when biting that lingers beyond that is worth a quick call to your dentist.
Making fillings last
- Keep up consistent oral hygiene.
- Limit sugary foods and drinks.
- Avoid chewing ice and other hard objects.
- Attend regular checkups.
- Wear a nightguard if you grind your teeth.
The bottom line
Fillings are routine and long-lasting. Catching decay early often means a small composite filling now, rather than a crown or root canal later.
Dr. James Okafor is a general dentist focused on preventive care and patient education. He believes most dental problems are far easier to avoid than to fix, and he writes to help people understand what is happening in their own mouths.
This article is for general information only and is not a substitute for professional dental advice. Always consult your dentist about your individual needs.
