ridge

[rij]

a linear projection or projecting structure; a crest.

alveolar ridge a bony ridge of the maxilla or mandible, the part of the alveolar process that contains the alveoli; called also alveolar crest.

dental ridge any linear elevation on the crown of a tooth.

Dental ridges in a maxillary molar. From Dorland's, 2000.

dermal r's ridges of the skin produced by the projecting papillae of the corium on the palm of the hand and sole of the foot, producing a fingerprint and footprint characteristic of the individual; called also cristae cutis.

genital ridge the more medial part of the urogenital ridge, giving rise to the gonad.

healing ridge an indurated ridge that normally forms deep to the skin along the length of a healing wound.

incisal ridge the part of the crown of an anterior tooth that makes up the actual incisal portion; see incisal surface, under surface.

interureteric ridge a fold on mucous membrane extending across the bladder between the ureteric orifices.

mammary ridge an ectodermal thickening in early embryos, along which the mammary glands subsequently develop.

mesonephric ridge the more lateral portion of the urogenital ridge, giving rise to the mesonephros.

oblique ridge a variable linear elevation obliquely crossing the occlusive surface of a maxillary molar.

urogenital ridge a longitudinal ridge in the embryo, lateral to the mesentery.

ob·lique ridge

a ridge on the masticatory surface of an upper molar tooth from the mesiolingual to the distobuccal cusp.

Farlex Partner Medical Dictionary © Farlex 2012

ob·lique ridge

(ō-blēk' rij)

A crest on the occlusal surface of upper molars comprising the distal cusp ridge of the mesiolingual cusp and the triangular ridge of the distobuccal cusp.

ob·lique ridge

(ō-blēk' rij)

Bony ridge on lateral aspect of anterior border of ramus of mandible that runs downward and onto body of the mandible laterally to third and second molar teeth.

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References in periodicals archive

Paralogania with flattened, relatively large, strongly elongate scales, with smooth crown plate or with plate having shallow furrow along midline and one to two fine, backwardly and upwardly directed ridges posterolaterally of plate; oblique ridges reach posterior crown apex; two to four, usually three, fine spines posterolaterally of crown or anteriorly of most lateral slanting ridge or beneath it; spine row does not reach posterior crown apex; double-spine beneath posterior crown apex absent; base slightly deeper anteriorly than posteriorly; pulp depression wide, as slit-like opening or smooth; pulp canal long, numerous dentine canals shorter and sinuous.

Paralogania from the Rootsikula (Wenlock) and Paadla (Ludlow) stages of Estonia/Paralogania Rootsikula (Wenlock) ja Paadla (Ludlow) lademest Eestis