Mindblown: a blog about philosophy.
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Hemi‐maxillectomy
Partial surgical removal of the maxilla.
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Hemidesmosome
An ultrastructural feature located on the basal surface of some epithelial cells forming the position of attachment between the basal surface of the cell and the basement membrane, or the conditioning film of a dental implant. The half of a desmosome produced by epithelial cells for attachment of the basal surface of the cell to…
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Hematopoietic stem cell
Progenitor or precursor cells found in the bone marrow from which all blood cell types of both the myeloid and lymphoid lineages are derived. Is a cell isolated from the blood or bone marrow that can renew itself, and can differentiate to a variety of specialized cells. A pluripotent cell capable of differentiating into various…
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Hematoma
A confined gathering of extravasated blood, usually clotted, that presents as a mass in a tissue, organ, or space. Localized swelling filled with blood due to a broken blood vessel. The localized collection of blood in the tissues as a result of injury. A swelling resulting from blood collecting in a restricted space, such as…
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Hemangioma
A benign blood vessel neoplasm; may occur as capillary or cavernous; soft, painless, red to purple, blanches on pressure. A tumor composed of blood vessels or large spaces containing blood. General name for a variety of discolorations on the skin of newly born infants, sometimes called birthmarks. These are a form of nevus (skin blemish)…
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HEMA (abbrev)
Hydroxyethyl methacrylate.
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Height of contour
A line encircling a tooth and designating its greatest circumference at a selected axial position determined by a dental surveyor; a line encircling a body designating its greatest circumference in a specified plane. A line encircling a structure, designating its greatest diameter in a specified plane. In dentistry, the term refers to the largest circumferential…
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Heel
The distal end of a denture. A sliver of old wood retained at the base of a cutting. It is traditional in taking cuttings of carnations and roses. The back part of the foot. A sliver of old wood retained at the base of a cutting. It is traditional in taking cuttings of carnations and…
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Heat necrosis
Cell death due to effectively prolonged exposure of bone to elevated temperature, such as during osteotomy preparation.
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Heat‐curing resin
Resin requiring external heat to activate polymerization.
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