ridge

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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.

ridge

(rij), [TA]
1. A linear elevation, usually rough.
See also: crest.
2. dentistry any linear elevation on the surface of a tooth.
3. The remainder of the alveolar process and its soft tissue covering after the teeth are removed.
[A. S. hyrcg, back, spine]

ridge

(rij) a linear projection or projecting structure; a crest.
dental ridge  any linear elevation on the crown of a tooth.
dermal ridges  cristae cutis.
genital ridge , gonadal ridge a bulge on the medial side of the embryonic mesonephros; the primordial germ cells become embedded in it, forming the primordium of the testis or ovary.
healing ridge  an indurated ridge that normally forms deep to the skin along the length of a healing wound.
interureteric ridge  a fold of mucous membrane extending across the bladder between the ureteric orifices.
mammary ridge  a ridge of thickened epithelium from axilla to groin on each side in the mammalian embryo, along which nipples and mammary glands develop, all but one pair usually disappearing in the human.
mesonephric ridge  the more lateral portion of the urogenital ridge, giving rise to the mesonephros.
rete ridges  inward projections of the epidermis into the dermis, as seen histologically in vertical sections.
synaptic ridge  a wedge-shaped projection of a cone pedicle or of a rod spherule, on either side of which lie the horizontal cells whose dendrites are inserted into the ridge.
urogenital ridge  a longitudinal ridge in the embryo, lateral to the mesentery, which later divides into the mesonephric and gonadal ridges.

ridge

(rĭj)
n.
A long, narrow, or crested part of the body: the ridge of the nose.

ridge

[rij]
Etymology: AS, hyrcg
a projection or projecting structure, such as the gastrocnemial ridge or crest on the posterior surface of the femur giving attachment to the gastrocnemius muscle.

ridge

(rij) [TA]
1. A linear elevation.
See also: crest
2. dentistry Any linear elevation on the surface of a tooth.
3. The remainder of the alveolar process and its soft tissue covering after the teeth are removed.
[A. S. hyrcg, back, spine]

ridge

(rij) [TA]
1. Linear elevation, usually rough.
See also: crest
2. In dentistry, any linear elevation on tooth surface.
3. Remainder of alveolar process and its soft tissue covering after teeth are removed.
[A. S. hyrcg, back, spine]

ridge,

n 1. the remainder of the alveolar process after the teeth are removed.
2. the linear elevations on the masticatory surface of both anterior and posterior teeth.
ridge, alveolar,
n the bony ridge of the maxillae or mandible that contains the alveoli (sockets of the teeth). See also process, alveolar.
ridge, alveolar, remodeling,
n an eroding of the residual ridge that occurs as the result of wearing dentures. It may cause changes to the bone structure of the face so that dentures must be repaired or replaced to obtain a secure, comfortable fit.
ridge augmentation,
n the process of increasing the size of the alveolar ridge.
ridge, center of,
n the buccolingual midline of the residual ridge.
ridge, central labial,
n a groove appearing on the buccal midline of a canine tooth that is caused by a larger than usual middle labial developmental lobe.
ridge, cervical,
n the height of the curve in the cervical third of a tooth's buccal surface.
ridge, crest of,
n the highest continuous surface of the ridge, but not necessarily the center of the ridge; the top of a residual or alveolar ridge.
ridge expansion,
n the surgical process of using chisels or osteotomes to widen the residual ridge laterally in order to allow an implant or bone graft to be inserted.
ridge extension,
ridge, internal oblique,
n the mylohyoid line located along each medial surface of the body of the mandible that extends posteriorly and superiorly, becoming more prominent as it ascends each body. It is the point of attachment of the mylohyoid muscle that forms the floor of the mouth.
ridge, key,
n (zygomaxillare), the lowest point of the zygomaticomaxillary ridge.
ridge, labial,
n a linear elevation or ridge located on the surfaces of the incisors that face the lips.
ridge lap,
n the part of an artificial tooth that is adjacent to the residual ridge; the part of the artificial tooth that laps the ridge.
ridge mapping,
n the act of using a graduated probe or caliper to pierce the anesthetized soft tissue along the residual ridge in order to determine the measurements needed to reproduce the shape of the ridge using a diagnostic cast.
ridge, marginal,
n a ridge or elevation of enamel that forms the boundary of the occlusal surface of a tooth.
ridge, mental,
n a dense ridge extending from the symphysis to the premolar area on the anterolateral aspect of the body of the mandible.
ridge, mylohyoid,
n a dense line or ridge of bone on the medial surface of the body of the mandible that extends obliquely upward and posteriorly from the symphysis, covers the cervical portion of the third molar, and then goes upward and backward onto the vertical ramus. The mylohyoid muscle is inserted into this ridge of bone.
ridge, oblique,
n See ridge, internal oblique.
ridge, Passavant's,
ridge relation,
ridge, residual,
n the portion of the alveolar ridge that remains after the alveoli have disappeared from the alveolar process after extraction of the teeth.
ridge support,
ridge, transverse,
n an elevation that connects the buccal and lingual cusps and extends crosswise over the occlusal table of mandibular and maxillary posterior teeth.
ridge, triangular,
n an elevation on a posterior tooth that extends from the tip of the cusp to the center of the occlusal table.

ridge

a linear projection or projecting structure; a crest.

dental ridge
any linear elevation on the crown of a tooth.
healing ridge
an indurated ridge that normally forms deep to the skin along the length of a healing wound.
interureteric ridge
a fold of mucous membrane extending across the bladder between the ureteric orifices.
mammary ridge
milk line; an ectodermal thickening in early embryos, along which the mammary glands subsequently develop.
mesonephric ridge
the more lateral portion of the urogenital ridge of the embryo, giving rise to the mesonephros.
palatine ridge
a number of transverse ridges across the hard palate in some animals.
urogenital ridge
a longitudinal ridge in the embryo, lateral to the mesentery.

Patient discussion about ridge

Q. what causes ridges in fingernails center of nail is splitting down the middle toward the nail bed.

A. Vertical ridges that appear on the nail can indicate disorders as simple as iron deficiency, poor absorption of vitamins and nutrients, overall poor health or they could indicate something as serious as kidney trouble.
it might be wise to get a blood test.

More discussions about ridge