hemihydrate


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hemihydrate

(hĕm″ē-hī′drāt)
A chemical compound with one molecule of water for every two molecules of the other substance. In dentistry, calcium sulfate hemihydrate is mixed with water to produce a hardened plaster or stone (calcium sulfate dihydrate), which, in turn, is commonly used to produce dental models.
References in periodicals archive ?
Vehicle groups received saline only, while control groups received saline with one of the test-inductive agents (MK-801, apomorphine hydrochloride hemihydrate, or haloperidol).
Briefly, the hydration and mechanical properties of R-CP were measured first, and then the hemihydrate content of R-CP was determined by DSC/TG curves and triphase composition analysis.
The complete dissolution of hemihydrate into dehydrate as the plaster were set form series of interlocking of dehydrate crystal matrix (capillaries) giving the plaster the ability to absorb water after it's dry.
"Our findings suggest that ammonia hemihydrate could be an important component of the mantle in ice giants, and will help improve our understanding of these frozen worlds."
Extraction socket preservation graft before implant placement with calcium sulfate hemihydrate and platelet-rich plasma: a clinical and histomorphometric study in humans.
We observed for the first time that granatanone has a tendency to crystalize from n-hexane/diethyl ether mixture, without exclusion of moisture, as a hemihydrate (2 x (1/2)[H.sub.2]O); thus, the granatanone crystal without a molecule of water was obtained from dried solvents.
[19] have noticed that in TPP ashes, ettringite does not form before 7 days of hydration, and its formation continues for up to 30 days, whereas ettringite is a stable phase only at elevated pH levels (pH 9-13) and is slowly dissolved by percolating unsaturated precipitation water and becomes replaced by calcite and Casulphate hemihydrate phases, meaning that ettringite-based cementation developed in ash-water reactions is not stable in an open atmospheric environment over the long term.
Ceramics such as calcium sulfate hemihydrate (plaster of Paris), silicate-based glasses, and calcium sulfate dihydrate (gypsum), and calcium phosphates are used for producing implant devices and bone graft.
Chlorogenic acid hemihydrate (PubChem CID: 24981351); Phenylephrine hydrochloride (PubChem CID: 5284443); Acetylcholine chloride (PubChem CID: 6060); Nomega-nitro-L-arginine methyl ester (PubChem CID: 135193); Apamin (PubChem CID: 16218850); Charybdotoxin (PubChem CID: 56842037); Indometacin (PubChem CID: 3715); Bradykinin (PubChem CID: 439201); Sodium nitroprusside anhydrous (PubChem CID: 11963579).
The better known name for calcium sulphate hemihydrate contains a European capital city.
Forest, "Osteoblast adherence and resorption activity of isolated osteoclasts on calcium sulphate hemihydrate," Biomaterials, vol.