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A dental crown is a custom-made cap that is placed over a tooth to restore its shape, size, strength, and appearance. Crowns are typically used in the following situations:

1. To Protect a Weak Tooth: Crowns can help protect a tooth that has been weakened by decay or is at risk of breaking. 
2. To Restore a Broken or Worn-Down Tooth: If a tooth is cracked or severely worn down, a crown can restore its functionality and appearance.
3. To Cover and Support a Tooth with a Large Filling: When a tooth has a large filling and not much natural tooth structure left, a crown can help hold the tooth together.
4. To Hold a Dental Bridge in Place: Crowns are used on the teeth on either side of a gap to anchor a dental bridge.
5. To Cover Misshapen or Discoloured Teeth: For cosmetic purposes, crowns can improve the appearance of teeth that are misshapen or severely discoloured.
6. To Cover a Dental Implant: Crowns are placed on top of dental implants to replace missing teeth.

Types of dental crowns

• Porcelain or Ceramic Crowns: These are popular for their natural look, as they can match the colour of your teeth. They are often used for front teeth.
• Metal Crowns: Made from alloys containing gold, platinum, or base metals, these crowns are very durable and typically used for molars where they are less visible.
• Porcelain-Fused-to-Metal Crowns (PFM): These crowns combine the strength of metal with the natural appearance of porcelain.
• Resin Crowns: These are less expensive but also less durable, making them more prone to wear and fractures.

Procedure

The procedure for placing a dental crown usually involves two visits to the dentist. During the first visit, the dentist will prepare the tooth by removing any decay and shaping it to fit the crown. An impression of the tooth is then taken and sent to a lab where the crown is made. A temporary crown is placed on the tooth until the permanent one is ready. During the second visit, the permanent crown is cemented onto the tooth.

Benefits of dental crowns

Crowns are a highly effective way to protect damaged teeth, improve the appearance of teeth, and restore functionality. They can last for many years with proper care.

Overall, a dental crown is a versatile solution in restorative and cosmetic dentistry.

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