crown (kroun)
Crown
crown
crown/root ratio.
crown [krown]
1. the topmost part of an organ or structure, e.g., the top of the head.
anatomical crown the upper, enamel-covered part of a tooth.
artificial crown a reproduction of a crown affixed to the remaining natural structure of a tooth.
clinical crown the portion of a tooth exposed beyond the gingiva.
physiological crown the portion of a tooth distal to the gingival crevice or to the gum margin.
| crown (kroun) n. 1. The top or highest part of bodily structure, especially the head. 2. The part of a tooth that is covered by enamel and projects beyond the gum line. 3. An artificial substitute for the natural crown of a tooth. v. 1. To put a crown on a tooth. 2. To reach a stage in labor when a large segment of the fetal scalp is visible at the vaginal orifice. Used of a fetus or the head of a fetus. |
Crown
The natural crown of a tooth is that part of the tooth covered by enamel. Also, a restorative crown is a protective shell that fits over a tooth.
crown
Etymology: L, corona
1 the upper part of an organ or structure, such as the top of the head.
2 the portion of a human tooth that is covered by enamel.
crown/root ratio.
crown [krown]
1. the topmost part of an organ or structure, e.g., the top of the head.
2. artificial crown.
anatomical crown the upper, enamel-covered part of a tooth. 
Anatomical and clinical crowns, demonstrating that the former are independent of the state of surrounding tissues while the latter depend on the height of the surrounding gingiva. From Dorland's, 2000.
artificial crown a metal, porcelain, or plastic reproduction of a crown affixed to the remaining natural structure of a tooth.
clinical crown that portion of a tooth visible above the gingiva.
crown,
n 1. the natural portion of a tooth covered by enamel.
2. an artificial replacement for the natural crown of the tooth. Colloquial term is
cap.
2. an artificial replacement for the natural crown of the tooth. Colloquial term is
cap.
crown, anatomical,
n the portion of dentin covered by enamel.
crown and bridge prosthodontics,
n the division of prosthodontics that deals with crown restorations and the fixed type of tooth-borne partial denture prosthesis. See also prosthodontics, fixed.
crown, artificial,
n a dental prosthesis restoring the anatomy, function, and esthetics of part or all of the coronal portion of the natural tooth.
crown, ceramic,
n one of several materials that can make up a crown, which can be combined with other components such as porcelain or metal to improve long-term crown function.
n the clinical view of a crown from its most narrow angle of insertion into the gingival tissues.
crown, clinical,
n 1. the portion of enamel visibly present in the oral cavity.
2. the portion of a tooth that is occlusal to the deepest part of the gingival sulcus.
2. the portion of a tooth that is occlusal to the deepest part of the gingival sulcus.
crown, complete,
n a restoration that reproduces the entire surface anatomy of the clinical crown and fits over a prepared tooth stump.
crown, crown veneer,
n a restoration that reproduces the total clinical coronal surface contour of the tooth. Colloquial term is
veneers.
veneers.
crown, dowel,
n a restoration that replaces the entire coronal portion of a tooth and derives its retention from a dowel extending into a treated (filled) root canal.
crown, extraalveolar clinical
n the portion of a tooth that extends occlusally or incisally from the junction of the tooth root and the supporting bone.
crown, faced,
n See crown, veneered metal.
crown, full, restoration,
n an individual tooth prosthesis encompassing the entire prepared clinical crown. See also crown, complete veneer.
crown, gold,
n a metal variety of crown using gold.
crown, jacket,
n See crown, complete.
crown lengthening,
n a surgical procedure to remove marginal gingival tissues to expose more of the crown of the tooth to facilitate a reconstructive or operative procedure.
crown, partial,
n a restoration that covers three or more, but not all, surfaces of a tooth.
crown, porcelain-faced,
n an artificial crown that makes use of porcelain inlayed in or veneered onto the labial or buccal surface.
crown, porcelain jacket,
n a type of crown composed of porcelain mixed with metal, commonly used for its appearance and tooth-bonding properties.
crown, stainless steel,
n a preformed steel crown used for the restoration of badly broken-down primary teeth and first permanent molars. Also used as a temporary restoration of fractured permanent incisors.
crown, temporary,
n a short-term crown placed on a tooth while the final impression of the permanent crown is being cast.
crown, three-quarter,
n a term frequently used to designate a partial veneer crown.
crown, veneered metal,
n a complete crown that has one or more surfaces prepared for and covered by a tooth-colored substance such as porcelain or resin.
crown
1. the topmost part of an organ or structure, e.g. the top of the head.
2. artificial crown on a tooth.
anatomical crown
the enamel-covered part of a tooth.
ciliary crown
the portion of the ciliary body of the eye that is located closest to the lens and bears the ciliary processes.
clinical crown
the exposed part of a tooth within the mouth.
crown height reduction
a dental procedure sometimes done on canine teeth in dogs for the treatment of malocclusion or to prevent injury from biting.
reserve crown
in a hypsodont tooth, that part of the crown located in the alveolus.
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