Composite Fillings

John H Ko, DDS -  - Cosmetic Dentist

John H Ko, DDS

Cosmetic Dentist & General Dentist located in Pleasanton, CA

If you need to treat a cavity but don’t want to tarnish your bright smile with a dark filling, then you want a composite filling. At John H Ko DDS in Pleasanton, California, Dr. Ko is highly experienced with administering composite fillings and looks forward to taking you through the procedure. Call the offices or schedule an appointment online today to learn more.

Composite Fillings Q & A

What is a composite filling?

A composite filling is a type of dental filling, which is a procedure that treats cavities by removing the decay from your tooth and “filling” it in with a bonding substance that helps to prevent further deterioration. A wide range of bonding substances is used in dental fillings, depending on the size and location of the filling and the patient’s preference. Some common materials are:

  • Gold
  • Silver (sometimes called amalgam)
  • Ceramic
  • Glass ionomer
  • Porcelain
  • Composite


A composite filling is a dental filling that’s made of powdered glass and acrylic resin. They’re generally tooth-colored and can be shaded to more precisely match the exact color of your teeth, making them virtually invisible in your mouth.

What is the process for getting a composite filling?

When you come in for a composite filling, Dr. Ko first numbs the gums around your decayed tooth with a local anesthetic. He then uses a drill to remove the decayed portion of your tooth and cleans the space to be filled in order to ensure that it's free of bacteria and debris.

Next, he applies the composite filling in layers, using a tool that emits a special wavelength of light to harden or “cure” each layer of the filling. Once he’s finished filling the cavity, he trims off any excess material and shapes the filling so that it seamlessly fits in with your natural bite.

What are the pros and cons of a composite filling?

Composite fillings are a good choice for small- to mid-sized cavities in the front or back teeth that need to be able to handle moderate pressure from chewing. Just like any dental filling material, there are pros and cons to treating your cavity with composite fillings.

Pros of Composites:

  • Look natural and blend in with the rest of your teeth
  • Chemically bond to the surrounding tooth for further support
  • Might not have to remove as much of the original tooth

Cons of Composites:

  • More expensive than other fillings
  • Less durable than some other fillings
  • Slightly longer filling procedure


Composite fillings are ultimately an excellent choice if you want your smile to stay bright and white. Learn more today by scheduling an appointment with Dr. Ko at John H Ko DDS. You can call the office or using the convenient online booking tool.