Why a Gold Crown Is an Alloy
A dental crown is a cap fitted over a damaged tooth. The gold used for one is usually mixed with other metals rather than made of pure gold. Alloying makes the material strong enough to withstand chewing while preserving useful qualities: it can be shaped precisely, and its surface can be finished to fit closely against the tooth.
That fit matters. A crown with a well-sealed edge leaves fewer openings where food and bacteria can collect. Gold alloys are also relatively gentle on the opposing tooth compared with some harder dental materials, an advantage when teeth meet under repeated pressure.
The Tradeoff Behind the Price
Gold’s usefulness does not make it inexpensive. The metal itself is valuable, and the amount and type of alloy used contribute to the cost of a restoration. A dentist and patient may weigh that expense against other crown materials, which can offer a tooth-colored appearance or a lower price but have different strengths and wear characteristics.
Gold is conspicuous, so it is often chosen for teeth farther back in the mouth, where appearance may matter less than function. The choice is a practical compromise: a visible metal crown can be costly, but in a hard-working molar it may provide a precisely fitted surface that holds up to chewing. In this case, gold’s value is measured not only at the jeweler’s counter, but in how the alloy behaves tooth against tooth.
