5 Critical Mistakes in Caring for Zirconia Crowns

Zirconia itself doesn't decay, but the natural tooth underneath it still can. Neglecting to brush along the gum line can let bacteria seep under the crown, decaying the underlying tooth and eventually causing the crown to fail — so crowns need to be brushed as carefully as your natural teeth.

Zirconia porcelain comes factory-finished with a glaze layer that resists staining. Abrasive whitening toothpastes gradually scratch this glaze, dulling its shine and making it more prone to picking up stains — a standard, soft toothpaste is always the better choice.

Zirconia crowns are often designed very close to neighboring teeth or as bridges, and a regular brush can't reach these tight spaces. Skipping floss or interdental brushes can lead to gum swelling, discoloration, and bad breath — a water flosser or specialty floss isn't optional, it's essential.

While zirconia withstands vertical chewing forces well, it's brittle against lateral or sharp impacts. Habits like opening packaging with your teeth, cracking nuts, or chewing pens can chip the porcelain surface, and most of this damage can't be repaired.

Finally, failing to use a night guard despite knowing you clench or grind your teeth (bruxism) is a serious mistake. Since zirconia is harder than natural teeth, even if the crown itself doesn't break, the pressure can damage the tooth root or opposing natural teeth — a protective night guard is the cheapest insurance for this investment.