Dental crowns versus onlays. What is the difference?
Dental crowns and onlays are both types of dental restorations that are used to repair damaged or decayed teeth. However, there are some key differences between the two.
A dental crown is a type of cap that is placed over a damaged tooth to restore its shape, size, strength, and appearance. Crowns are typically used to protect a tooth that has been extensively damaged by decay, injury, or wear and tear. They can also be used to improve the appearance of a tooth that is discolored or misshapen. Crowns can be made from a variety of materials, including metal, porcelain, and ceramic.
On the other hand, an onlay is a type of indirect dental restoration that is used to repair a tooth that has been damaged by decay or injury but does not require full coverage of the tooth. An onlay is similar to a filling but is made in a dental laboratory, and then cemented in place by the dentist. Onlays are used to repair a tooth that has moderate to extensive damage but does not need full coverage like a crown. Onlays are also made from different materials such as gold, porcelain, and ceramics.
When deciding between a crown and an onlay, a dentist will consider the extent of the damage to the tooth and what is the best restoration that will provide optimal function and aesthetics. If a tooth has extensive damage, it may require a full coverage crown to fully restore it. In contrast, if a tooth has only moderate damage, an onlay may be a more appropriate option.
In terms of longevity, both crowns and onlays are highly durable, but crowns typically last longer than onlays, especially when made of metal. Onlays made of porcelain or ceramics are more prone to chipping or breaking compared to metal onlays, but they offer better aesthetics.
In summary, dental crowns and onlays are two types of dental restorations that are used to repair damaged or decayed teeth. A crown is a full coverage cap placed over a damaged tooth, while an onlay is a more conservative option used to repair a tooth with moderate to extensive damage. The choice between a crown and an onlay is determined by the extent of the tooth’s damage and the treatment goals. Both options can provide strong and long-lasting results, but crowns tend to last longer and are a better option for teeth with extensive damage.
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