Most Durable Dental Crown Material: What Actually Lasts

The Durability of Zirconia Crowns

Zirconia is a ceramic-like material made up of zirconium dioxide. This substance has a unique resistance to fracturing caused by the continuous chewing pressure put on teeth, as a crown should be able to withstand.

Where and Why the Material Is Chosen Most Often

• The back molars are the place where zirconia crowns prove their worth most often, due to the high pressure exerted there during chewing.

• When it comes to the people who unconsciously clench their jaws while sleeping, the choice of material is important, though not vital, as the proper bite adjustment will also affect the likelihood of fracturing.

• The full-contour zirconia crowns have a particularly valuable feature in that they resist breaking in a way that preserves the esthetic appeal of the tooth.

Other Materials Worth Considering

Crowns made of gold have a well-deserved reputation for being exceptionally long-lasting. They resist breaking and cracking in comparison to many other materials and have a high flexibility that helps them resist the forces exerted on them during chewing, as well as bond to the tooth structure better.

The main issue with gold crowns is their visual appeal, or the lack thereof. While some people might be okay with a gold-coloured crown on their molar, most would prefer to have a natural-looking restoration.

How Long Do Porcelain Crowns Usually Last?

Crowns made of porcelain can sometimes look beautiful and be long-lasting, provided the indications for their usage are followed. This means a properly contoured crown that is bonded to a suitable tooth structure with proper techniques.

Otherwise, they might be prone to fracturing due to their low flexural strength when compared to zirconia.

Why the Material Is Not Entirely Responsible for the Crown’s Success

• The fit of the crown is essential to its long-term success, as a poorly fitting restoration will allow bacteria to accumulate on the surface and cause periodontal disease.

• Biting mechanics also play a part, as a crown that bears excessive pressure with each bite is likely to fracture soon.

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