crowns

Crowns are required when a tooth has lost a substantial portion of its structure as a result of decay, trauma or breaks, root canal treatment or age-related wear. When a tooth has only a small portion of its natural structure remaining it is susceptible to fracturing, sometimes in a way that is not repairable. A crown is like a new ceramic "shell" that covers the top and sides of the tooth. It is made of strong, durable ceramic and, by banding around the tooth, is able to support and strengthen it. Crowns are more costly than fillings but, if done in time, are an excellent investment that can significantly extend the life of a tooth. Also consider that losing a tooth leaves fewer teeth to distribute the bite force amongst and in time this can lead to further problems.

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Crowns can also be a highly aesthetic option for correcting the shape, shade (colour), or position of front teeth. This is because they are made of ceramic which very closely mimics the appearance of natural teeth. 

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Process and Appointments

A crown is typically completed over two appointments with about 2 weeks in-between.

 

Appointment 1 (Approx 1 hour)

After the area is numbed with a local anaesthetic, the tooth is shaped, making it smaller by about 1mm. After shaping, an impression (mould) of the tooth and the opposing teeth is taken. 

The impressions are sent to a dental technician (ceramist) who makes the crown according to Dr. Logue's specificiations. 

To protect the prepared tooth, a temporary crown is cemented with temporary cement.

As a temporary crown is not as strong as the final product, you should chew on the opposite side of the mouth and avoid stick or hard foods. 

 

Appointment 2 (Approx Half an Hour)

At this second appointment, the temporary crown is removed. The new crown is placed over the tooth and the shape and shade are checked. When the fit and look of the crown is correct it is cemented in place with dental cement. This cement is set with a curing light. Minor adjustments are then made to make the bite comfortable. 

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Crowns need to be precisely made to fine tolerances so, on occasion, a second fitting appointment is required. 

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Cleaning and Caring for Your Crown

As with natural teeth, crowns longevity depends on good dental hygiene, oral health and the forces you apply to your teeth. Crowns and bridges require regular flossing and brushing, with extra attention around the margins where decay can occur. After a crown, regular dental checkups are advisable. 

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