crest

(redirected from alveolar crest)
Also found in: Dictionary, Thesaurus, Medical, Legal, Financial.

crest,

in feudal livery, an ornament of the headpiece that afforded protection against a blow. The term is incorrectly used to mean family coat of arms. Crests were widely used in the 13th cent. by feudal chiefs, as they had been by ancient Greek warriors and the Roman centurions. The earlier forms were usually of stuffed leather, gilded, silvered, or painted; later they were of wood or metal. The crest came to be used in heraldryheraldry,
system in which inherited symbols, or devices, called charges are displayed on a shield, or escutcheon, for the purpose of identifying individuals or families.
..... Click the link for more information.
, first only by persons of high rank, then by all those entitled to a coat of arms. It surmounts the escutcheon; its colors are those of the coat of arms. The dragon, wivern, and plume of feathers are common crests. The lion, used by Edward III of England, remains the crest of the English sovereigns. See also blazonryblazonry
, science of describing or depicting armorial bearings. The introduction, since the Middle Ages, of artificial rules and fanciful medieval terms has complicated the science, particularly in England.
..... Click the link for more information.
.

Crest

Ornament on a roof, a roof screen or wall, which is frequently perforated, and consists of rhythmic and identical decorative patterns.

Crest

 

(1) A bony protrusion in vertebrates and man that increases the area for muscle attachment. For example, the skulls of many mammals have, on the occipital and parietal bones, crests whose size depends upon the degree of development of the attached musculature. The sternum of flying birds has a high thin crest called the carina, to which the pectoral muscles, which draw the wings downward, are attached.

(2) A fleshy growth (in English, also called the comb) at the top of the head in some birds (many gallinaceans and accipi-ters, such as the American black vulture). In breeds of domestic fowl the crest takes a variety of forms (foliate, rosaceous, or nutlike). Varieties of chicken with well-developed tufts usually have no comb (for example, the Dutch and Padua hens).

crest

[krest]
(design engineering)
The top of a screw thread.
(science and technology)
The highest point of a structure or natural formation, such as the top edge of a dam, the ridge of a roof, the highest point of a gravity wave, or the highest natural projection of a hill or mountain.

crest

crest, 2
1. A finial.
2. An ornament of a roof, a roof screen, wall, or aedicula, generally rhythmic and highly decorative, and frequently perforated; cresting.

crest

1. a tuft or growth of feathers, fur, or skin along the top of the heads of some birds, reptiles, and other animals
2. a ridge on the neck of a horse, dog, lion, etc.
3. the mane or hair growing from this ridge
4. a ridge along the surface of a bone
5. Archery identifying rings painted around an arrow shaft
References in periodicals archive ?
Furthermore, maxillary sinus location, vertical distances from most inferior border of maxillary sinus to alveolar crest and position of mental foramen were assessed.
Combination of "Osteon" and "Colla Guide" resorbable membrane facilitates increasing efficacy of the treatment, preserving alveolar crest height and shape.
The findings suggest that "Osteon" and "Colla Guide" resorbable membrane facilitate preservation of the alveolar crest, uniformity of alveolar arch cortex and bone mineralization.
Example diagrams were provided as a reference for degree of periodontal involvement and for degree of osseous deformities in the alveolar bone inferior to the alveolar crest (Figure 3).
The surgical template was inserted to mark the locations on the alveolar crest.
Combined endodontic-orthodontic treatment of transverse root fractures in the region of the alveolar crest.
software, Kaiser RT 1 Fototechnik, San Antonio, Texas), two independent examiners enlarged and measured posterior interproximal mesial and distal sites (a possible total of 48 measurements per subject) from the CEJ to the alveolar crest in order to calculate differences in the linear alveolar bone height.
The fact that in some circumstances there is limited bone support in the maxillary alveolar crest.
When the desired height of the alveolar crest is achieved, distraction ends and consolidation begins.
Orthodontics can act as a co-treatment for extrusion may be indicated to save teeth with: Advanced caries, Traumatic destruction of the clinical crown, Lateral root perforation, External or internal root resorption near the alveolar crest and overzealous tooth preparation.
5cm in diameter can reach a much larger size and can cause separation of adjacent teeth, resorption of the alveolar crest, destruction of bony structure and cosmetic deformity.
When placed into a properly formed segmental osteotomy, the distraction device allows for controlled elevation of the segment resulting in coronal displacement of the alveolar crest.