Zirconia crowns: when a weakened tooth needs protection

A crown covers the visible part of a tooth to restore its shape, function and protection after significant structural loss. Zirconia is a metal-free ceramic option with different strengths and optical properties; the material is selected alongside the tooth position, bite, shade and the amount of healthy tooth that remains.

A crown is not automatically the right answer for every large filling or discoloured tooth. A conservative filling, an onlay, whitening or another restoration may preserve more tooth structure. The diagnosis should explain why full coverage is recommended and what alternatives are available.

The dentist checks for decay, cracks, gum inflammation, nerve symptoms and the way the tooth meets its neighbours. If the nerve is inflamed or the tooth has had root canal treatment, the plan may include endodontic care and a suitable build-up before the crown. The shade and bite are reviewed before the laboratory makes the final restoration.

A temporary crown protects the prepared tooth while the final crown is made. Contact the clinic if it becomes loose, if the bite feels high, or if cold sensitivity and pain do not settle as expected. Avoid very sticky foods that can dislodge a temporary restoration.

Brush the crown and gumline like natural teeth and clean between the teeth every day. The crown itself cannot develop a cavity, but the edge where it meets the tooth can collect plaque and the supporting tooth can still decay. A night guard may be discussed if grinding creates excessive force.

A crown should feel stable and comfortable. Chipping, a rough edge, food trapping, bleeding or a change in the bite is a reason to arrange a review rather than waiting for the restoration to fail.