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Dental Crowns & Onlays

What is a Crown?

A dental crown, also known as a "cap," is a type of restoration used for teeth that have been extensively damaged, leaving insufficient tooth structure to support a conventional filling. Crowns are often required after root canal treatment as the tooth becomes more fragile. They are also used to enhance both the aesthetics and function of the tooth.

What Does the Procedure Involve?

The crown procedure typically takes two appointments:

Appointment 1

  1. Local Anaesthetic
    The area is numbed with a local anaesthetic to ensure you are comfortable throughout the procedure.

  2. Tooth Impression
    An impression is taken of the tooth that will be crowned, ensuring a precise fit for the crown.

  3. Tooth Preparation
    The tooth is prepared for the crown, which involves reducing the tooth slightly in all directions. This ensures there is enough space in your bite for the crown.

  4. 3D Scanning
    A modern 3D scanner is used to create a digital image of your teeth, which is sent to the lab for the crown fabrication.

  5. Temporary Crown
    A temporary crown is fitted to protect the tooth and prevent sensitivity while waiting for the permanent crown.

Appointment 2

  1. Crown Fitting
    The temporary crown is removed, and your permanent crown is carefully fitted and cemented into place.

Material Choices

Your dentist will discuss with you the best material for your crown based on the location and function of the tooth. The most common materials used are:

- Emax (tooth-coloured ceramic)

- Zirconia (strong and durable, ideal for back teeth)

- Gold Crown (strong and long-lasting)

- Silver Crown (traditional choice for back teeth)

What is an Onlay / Overlay / Inlay?

An onlay, overlay, or inlay is a type of restoration that is used when a tooth needs protection but does not require a full crown. These restorations are halfway between a crown and a filling. They are ideal when there is enough healthy tooth structure remaining to preserve. The procedure is similar to that of a crown.

What is a Post or Post-Crown?

A post is used when very little tooth remains above the gum line. It involves inserting a post into the tooth root, which acts as an anchor for the crown. The post-crown is then cemented over the post.

Posts are not suitable for everyone. The viability of this option depends on how much tooth structure remains and how strong the bite is. When used correctly, post-crowns can extend the life of a compromised tooth for many years.

A crown is often required for teeth that have been extensively damaged due to decay, root canal treatment, or trauma. It helps restore the tooth's strength and appearance.

We offer Emax, zirconia, gold, and silver crowns. Your dentist will help you choose the best material based on your specific needs.

The procedure typically takes two appointments. The first appointment involves tooth preparation and fitting a temporary crown, while the second involves fitting the permanent crown.

The procedure is typically not painful, as local anaesthetic is used to numb the area. Some sensitivity may occur after the anaesthetic wears off, but this should subside quickly.

Crowns are designed to last many years, with some lasting up to 15 years or more, depending on the material used and your oral hygiene practices.