Picture of Dental Crown
A dental crown is a tooth-shaped "cap" that is placed over a tooth ‑‑ covering the tooth to restore its shape and size, strength, and/or to improve its appearance. The crown, when cemented into place, fully encases the entire visible portion of a tooth that lies at and above the gum line.
Image Source: Dr. Jay Ohmes / expressionsdental.com.
Text: "Dental Crowns", WebMD Medical Reference