What's the difference between cement and layer?

Cement


Definition:

  • (n.) Any substance used for making bodies adhere to each other, as mortar, glue, etc.
  • (n.) A kind of calcined limestone, or a calcined mixture of clay and lime, for making mortar which will harden under water.
  • (n.) The powder used in cementation. See Cementation, n., 2.
  • (n.) Bond of union; that which unites firmly, as persons in friendship, or men in society.
  • (n.) The layer of bone investing the root and neck of a tooth; -- called also cementum.
  • (n.) To unite or cause to adhere by means of a cement.
  • (n.) To unite firmly or closely.
  • (n.) To overlay or coat with cement; as, to cement a cellar bottom.
  • (v. i.) To become cemented or firmly united; to cohere.

Example Sentences:

  • (1) In this study, a potassium nitrate-polycarboxylate cement was used as a liner and was found clinically to tend to preserve pulpal vitality and significantly eliminate or decrease postoperative pain.
  • (2) The incidence of femur fracture in non-cemented hip arthroplasty has been reported to be between 4.1% and 27.8%.
  • (3) Essential characteristics of the composite bone cement included a homogeneous and uniform fiber distribution, and a minimal increase in apparent viscosity of the polymerizing cement.
  • (4) Two hundred and forty root canals of extracted single-rooted teeth were prepared to the same dimension, and Dentatus posts of equal size were cemented without screwing them into the dentine.
  • (5) Cermet cement sealings showed defects more frequently.
  • (6) On Monday, the day after a party congress officially cementing Putin's candidacy in the 4 March presidential election, the top stories on Inosmi concerned modernisation, the eurozone crisis and Iran.
  • (7) To overcome these problems we developed methotrexate bone cement (MTX-Palacos) with the aim to obtain high local concentrations of methotrexate in order to destroy remaining tumor cells and avoid systemic side effects.
  • (8) The component was revised in forty-five patients, revision and advancement of the trochanteric component was done in twenty-five patients, and impinging bone or cement was removed from six patients; a combination of these procedures was done in nineteen patients.
  • (9) No clear population trends were seen in dental disease incidence except for cemental caries which were found among Copper and Bronze Age remains.
  • (10) All the flies were collected from a breeding site inside an abandoned cement building.
  • (11) Bone cement particles promote polyethylene wear, which in turn promotes granuloma formation, bone resorption, and subsequent bone cement disintegration.
  • (12) In addition, hypertension, blood group, surgical approach, and choice of cemented or cementless total hip replacement did not seem to affect the incidence of deep-vein thrombosis.
  • (13) The use of glass-ionomer cements in clinical dentistry has expanded greatly over the last decade.
  • (14) This study evaluated the bond strength between glass ionomer cements and laser-etched dentin.
  • (15) Microscopy revealed a spectrum of tissue reactions, ranging from a seemingly direct bone-cement contact to a fibrous membrane, up to 1.5 mm thick.
  • (16) Forty metal femoral cups were matched with a cemented acetabulum, while with 46 the acetabular implant was cementless.
  • (17) Cement was pressurized into the cavity of the anatomic specimens, and the maximum interface shear strength between the cement plug and the bone was experimentally determined for each revision.
  • (18) No significant differences were found among any of the cements at any of the times.
  • (19) With equal cementing conditions and points of measurement for all crowns, the PFM crowns were found to be significantly superior to the other crown types.
  • (20) This study evaluated the usefulness and accuracy of preoperative planning for cemented and cementless total hip arthroplasty (THA).

Layer


Definition:

  • (n.) One who, or that which, lays.
  • (n.) That which is laid; a stratum; a bed; one thickness, course, or fold laid over another; as, a layer of clay or of sand in the earth; a layer of bricks, or of plaster; the layers of an onion.
  • (n.) A shoot or twig of a plant, not detached from the stock, laid under ground for growth or propagation.
  • (n.) An artificial oyster bed.

Example Sentences:

  • (1) By 24 hr, rough endoplasmic reticulum in thecal cells increased from 4.2 to 7% of cell volume, while the amount in granulosa cells increased from less than 3.5% to more than 10%; the quantity remained relatively constant in the theca but declined to prestimulation values in the granulosa layer.
  • (2) These cells contained organelles characteristic of the maturation stage ameloblast and often extended to the enamel surface, suggesting a possible origin from the ameloblast layer.
  • (3) None of the other soft tissue layers-ameloblasts, stratum intermedium or dental follicle--immunostain for TGF-beta 1.
  • (4) Adding a layer of private pensions, it was thought, does not involve Government mechanisms and keeps the money in the private sector.
  • (5) Intraepidermal clefting starts at the junction between the basal and epidermal layers, and later involves all of the levels of the stratum spinosum.
  • (6) These data suggest that basophilic cell function in the superficial mucous layer in the nose is of greater significance in the development of nasal symptoms in response to nasal allergy than either mucociliary activity or nasal mucosal hypersensitivity to histamine.
  • (7) Likewise, they had little or no effects on the fluorescence anisotropy of TMA-DPH, which is also thought to be located in the interfacial region of the lipid bilayer, either when the probe was located in the outer layer of the plasma membrane or when the probe was located in the inner membrane compartment.
  • (8) While the heaviest anterogradely labeled ascending projections were observed to the contralateral ventral posterolateral nucleus of the thalamus, pars oralis (VPLo), efferent projections were also observed to the contralateral ventrolateral thalamic nucleus (VLc) and central lateral (CL) nucleus of the thalamic intralaminar complex, magnocellular (and to a lesser extent parvicellular) red nucleus, nucleus of Darkschewitsch, zona incerta, nucleus of the posterior commissure, lateral intermediate layer and deep layer of the superior colliculus, dorsolateral periaqueductal gray, contralateral nucleus reticularis tegmenti pontis and basilar pontine nuclei (especially dorsal and peduncular), and dorsal (DAO) and medial (MAO) accessory olivary nuclei, ipsilateral lateral (external) cuneate nucleus (LCN) and lateral reticular nucleus (LRN), and to a lesser extent the caudal medial vestibular nucleus (MVN) and caudal nucleus prepositus hypoglossi (NPH), and dorsal medullary raphe.
  • (9) Separation of PL by thin-layer chromatography revealed a prevalence of phosphatidylcholine followed by phosphatidylethanolamine.
  • (10) Thin layers of carbon (20 microns) and vacuoles (30 microns) suggested a large temperature gradient along the tissue ablation front.
  • (11) In cat, DARPP-32-immunoreactive cell bodies identified as Müller cells were demonstrated in the inner nuclear layer (INL) with processes closely surrounding the cell soma of photoreceptors in the outer nuclear layer.
  • (12) Suspensions of isolated insect flight muscle thick filaments were embedded in layers of vitreous ice and visualized in the electron microscope under liquid nitrogen conditions.
  • (13) We demonstrated that while the protein was incorporated into the cell layer at 6, 24, 48, and 72 hr, a far greater amount was secreted into the media.
  • (14) From this proliferating layer, precursor cells migrate outwards to reach the developing neostriatum in a sequential fashion according to two gradients of histogenesis.
  • (15) In many areas there are additional indications of thalamic terminations in deeper layers.
  • (16) Their narrowed processes pass at a common site through the muscle layer and above this layer again slightly widen and project above the neighbouring tegument.
  • (17) One month after unilateral transection of the fimbria-fornix an almost complete lack of cholinergic fibers persists in all layers of the dorsal hippocampus and fascia dentata ipsilateral to the lesion when compared to the contralateral hippocampus or to unlesioned control rats.
  • (18) After methylene blue, the gradient in resting potential across the circular layer was greatly reduced or abolished.
  • (19) In contrast, boundary layer diffusion is operative in the release from the matrixes prepared by compression of physical mixtures.
  • (20) This hydrostatic pressure may well be the driving force for creating channels for acid and pepsin to cross the mucus layer covering the mucosal surface.