Crowns
Crowns (dentistry)
Crowns (pronunciation: /kraʊnz/), in the field of dentistry, are a type of dental restoration which completely caps or encircles a tooth or dental implant. Crowns are often needed when a large cavity threatens the ongoing health of a tooth. They are typically bonded to the tooth using a dental cement.
Etymology
The term "crown" in dentistry is derived from the Latin word "corona", which means "garland or crown". This is due to the crown's function of encircling the tooth, similar to how a traditional crown encircles the head.
Types of Crowns
There are several types of crowns used in dentistry, including:
- Ceramic Crowns: These are made from a porcelain-based material and are used primarily for restoring front teeth due to their superior aesthetic qualities.
- Porcelain-fused-to-metal Crowns: These crowns are known for their strength and durability, making them suitable for any position in the mouth.
- Gold Alloys Crowns: These crowns are a mixture of gold, copper, and other metals. They provide a strong bond to the tooth, do not fracture, and do not wear away the tooth itself.
- Base Metal Alloys Crowns: These crowns are made from non-noble metals that are highly resistant to corrosion and make for a very strong crown.
Related Terms
- Dental Implants: These are surgical components that interface with the bone of the jaw or skull to support a dental prosthesis such as a crown.
- Dental Cement: This is a type of cement used in dentistry to bond crowns to teeth.
- Dental Restoration: This is the process of restoring the function, integrity, and morphology of missing tooth structure, which can be missing due to caries or external trauma, such as chipping or cracking a tooth.
External links
- Medical encyclopedia article on Crowns
- Wikipedia's article - Crowns
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