Crowns and Bridges

Dental crown and tooth


A crown (or cap) is a covering that encases the whole tooth surface, restoring it to its original size and shape. A crown protects and strengthens tooth structure that cannot be revived with fillings or other types of restorations.
Though there are several types of crowns, porcelain (tooth coloured crown) are the most common, because they so closely resemble natural teeth. They’re highly sturdy and will last many years, but like most dental restorations, they may need to be replaced. Porcelain crowns are made to match the shape, size, and colour or your teeth giving you a natural, durable smile.

Reasons for crowns:

  • Broken or cracked teeth
  • Cosmetic enhancement
  • Decaying teeth
  • Fractured fillings
  • Size-able fillings
  • Tooth has a root canal

What does getting a crown involve?

The process usually requires two appointments. Your first appointment will include taking a mould of your teeth, used to make your custom crown. A mould will also be used to assemble a non-permanent crown which will stay on your tooth for roughly two weeks until your new crown is fabricated by a dental laboratory.

While the tooth is numb, Dr. Calder will prepare the tooth by removing any decay and shaping the surface to properly fit the crown. Once accomplished, your temporary crown will be placed with bonding cement and your bite will be checked to assure everything is aligned properly.

At your second appointment, the temporary crown will be removed, the tooth will be cleaned, and your new crown will be precisely placed to guarantee the correct spacing and bite.


A bridge, also called a “fixed bridge” or a “fixed dental prosthesis,” is a dental restoration that replaces one or more missing teeth. It extends across an area which has no teeth and is made up of a prosthetic tooth fused between two crowns. The bridge is held firmly in place by your own teeth or by dental implants. A bridge is permanent and cannot be removed.

How is a bridge is placed?

If you have strong teeth surrounding a missing tooth, your dentist files down the healthy teeth to prepare them for the bridge. If you don’t have fantastic teeth or enough teeth to support a bridge, then dental implants might be surgically placed. A dental implant is a synthetic root made of titanium metal that’s inserted into the jawbone to replace the roots of the natural tooth. The implant acts as an anchor to hold a synthetic tooth or bridge in place.

Next, Dr. Calder makes a model of your teeth by taking impressions. The model is used to custom-make the prosthesis consisting of more than one artificial tooth, bonded together. This piece is referred to as a bridge. Meanwhile, Dr. Calder places a temporary bridge in your mouth to protect the exposed teeth and gums.

During your second visit, Dr. Calder takes away the temporary bridge and places the hand-made bridge. The crowns are either cemented to your strong teeth or attached to your dental implants.

Types of bridges

There are various types of dental bridges. Dr. Calder will recommend the most appropriate one depending on the situation of the missing tooth and the current health of your teeth, mouth and gums.

Traditional bridges are used if there are natural teeth on every side of the opening where the tooth is missing. As an alternative to a bridge, Dr. Calder may suggest a single implant to replace a missing tooth between two strong teeth. An implant will prevent you from having to get your strong teeth filed down in preparation for the crowns.