Crowns, Inlays and Onlays

Crowns, inlays and onlays are dental treatment that restore the tooth strength.

Dental crowns

The crown is the part of the tooth that rises above the gums. It is also a type of dental restoration that caps or encircles a natural tooth or implant. Crowns improve aesthetic appeal, but they also help to reinforce the tooth.

Dental crown
Dental crown

When is a crown needed?

If the dental cavity is small, and if after having cleaned the cavity, the structure of the tooth can still withstand it, the dentist simply fills the cavity using an amalgam, resin or composite filling. However, should the tooth now be too thin, the dental structure too fragile or too weak, a crown will have to be placed.

A dental crown is also required in the following situations:

Replacing a filling with a crown
Replacing a filling with a crown

How is a crown made?

Previously, crowns could only be milled in a dental laboratory. This required the use of a temporary crown and patients had to come to the clinic a second time to complete the installation.

Since 1997, we have been using the CEREC German technology. This allows us to mill your crown on site and complete the crown installation in a single visit. Here are the steps for the installation of a CEREC dental crown:

  1. The dentist prepares the tooth;
  2. A digital imprint is made of the tooth (no more uncomfortable paste in your mouth);
  3. The dentist finalizes the shape of the crown on his chair-side computer;
  4. The crown specifications are sent to the milling machine tool;
  5. The crown is milled in a few minutes and placed in the mouth;
  6. The occlusion is adjusted to perfection;
  7. You leave the clinic with a happy smile.

With CEREC, you save time, a second visit and a second injection of anesthetic.

To learn more about CEREC and to see an impressive video on the sculpting of a crown, we invite you to see our page on CEREC technology.

Inlays and Onlays

Inlays and onlays are treatments on the molars or premolars that replace amalgam (fillings) and composites. They are cut from a ceramic block and inserted in the tooth where the fillings would have been.

The advantages are numerous:

  • Inlays and onlays are more durable than composites;
  • They restores the tooth to its original strength;
  • When replacing a mercury filling, the result is more attractive;
  • The tooth is often less sensitive to hot and cold.

After removing the fillings, the remaining walls are sometimes very thin. It is then counter-indicated to use an amalgam or a composite as the tooth becomes too fragile. An inlay or onlay restoration is preferable in this case and may help avoid a root canal or the placement of a crown.

CEREC inlays and onlays

Rather than sending your inlay or onlay to be cut in the laboratory and having to return to the clinic in one or two weeks, we can mill the inlay or onlay on site with our CEREC technology.

Talk to your dentist to help you choose the most appropriate treatment for your situation.