✓ Crowns act as an attractive covering around a damaged tooth to improve the overall appearance. Crowns are also used as a protective shell by providing a barrier and preventing the damaged tooth from affecting the teeth around it. Dental crowns are more durable and natural than ever before. Made of strong materials, dental crowns can last for years to come with proper care. Crowns serve as a way to protect a tooth from being completely removed and allow for you to once again have a complete smile.