(v. t.) A variety of glass, used in ornament, to cover a surface, as of metal or pottery, and admitting of after decoration in color, or used itself for inlaying or application in varied colors.
(v. t.) A glassy, opaque bead obtained by the blowpipe.
(v. t.) That which is enameled; also, any smooth, glossy surface, resembling enamel, especially if variegated.
(v. t.) The intensely hard calcified tissue entering into the composition of teeth. It merely covers the exposed parts of the teeth of man, but in many animals is intermixed in various ways with the dentine and cement.
(v. t.) To lay enamel upon; to decorate with enamel whether inlaid or painted.
(v. t.) To variegate with colors as if with enamel.
(v. t.) To form a glossy surface like enamel upon; as, to enamel card paper; to enamel leather or cloth.
(v. t.) To disguise with cosmetics, as a woman's complexion.
(v. i.) To practice the art of enameling.
(a.) Relating to the art of enameling; as, enamel painting.
Example Sentences:
(1) A total of 555 caries lesions were registered on proximal surfaces, 49.1% being primary lesions in the enamel, 21.4% primary lesions into the dentin and 29.5% secondary lesions.
(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) It was found that there is a significant difference in bond strengths between enamel and stainless steel with strength to enamel the greater.
(4) Enamel was exclusively present opposite well developed dentine.
(5) Data is available to support the early influences of enamel organ epithelium upon a responding mesenchyme in the determination of dental morphogenetic fields (Dryburg, 1967; Miller, 1969).
(6) To determine the influence of cetylpyridinium chloride (CPC) adsorption on the wettability and elemental surface composition of human enamel, with and without adsorbed salivary constituents, surface-free energies and elemental compositions were determined.
(7) The 12-fluted bur caused no clinically identifiable marks on the enamel surface.
(8) Unaltered surface enamel of extracted human teeth was subjected to tests of resistance to dissolution in 10 mM acetic acid at pH 4.0 and 10 mM EDTA at pH 7.4 in a miniature continuous flow system.
(9) Secondary structural features of bovine amelogenin, a hydrophobic protein of developing enamel implicated in ename mineralization, are derived using 2D NMR spectroscopy in solution and molecular mechanics-dynamics studies.
(10) Several functional properties of MG1, MG2, and PRG have been examined, including their presence in two-hour in vivo enamel pellicle, binding to synthetic hydroxyapatite, lubricating properties, and interactions with oral streptococci.
(11) A thorough dental prophylaxis before acid-etching of enamel is often recommended.
(12) Changes of mineral content in the approximal enamel of the teeth were determined in situ with quantitative bite-wing radiography.
(13) On the fourth day of culture, the pre-ameloblasts achieved terminal differentiation into secretory ameloblasts, and enamel and dentin had already been deposited.
(14) This resulted in greater uniformity of abrasion over the enamel surface within the biopsy window area and better operator handling characteristics.
(15) The 33,000 molecular weight protease was also active against enamel proteins.
(16) Significantly more remineralization was observed in enamel samples treated with the toothpaste containing 2,500 ppm F compared to that containing 1500 ppm F. This result is consistent with the outcome of a recent caries clinical trial testing the same toothpastes and finding enhanced anticaries efficacy from the higher fluoride level.
(17) This demineralization was similar to enamel acid etched with 50% phosphoric acid for 2 mn.
(18) The data show that the structure of inner and outer enamel layers differ between these two carnivore species and that the enamel structure of the cat was most similar to that described in humans.
(19) Maturing enamel overlaid by either ruffle-ended or smooth-ended maturation ameloblasts showed similar Ca and P concentrations.
(20) Although the crystallite widths were similar in both AI and normal enamel, the AI teeth showed areas where the crystallite order and continuity appeared disrupted.
Opaque
Definition:
(a.) Impervious to the rays of light; not transparent; as, an opaque substance.
(a.) Obscure; not clear; unintelligible.
(n.) That which is opaque; opacity.
Example Sentences:
(1) "Maybe dullness is associated with psychic pain," Wallace wrote at one point, "because something that's dull or opaque fails to provide enough stimulation to distract people from some other, deeper type of pain that is always there, if only in an ambient low-level way, and which most of us spend nearly all our time and energy trying to distract ourselves from."
(2) It should also be realised that, in a very few hospitals, swabs which do not have an opaque marker may occasionally be used in theatre.
(3) The colors of mixtures of dental opaque porcelains and modifiers were measured with use of the CIE L*a*b* uniform color space.
(4) Type II pigment is extremely electron-opaque after staining with heavy metals to the extent that they appear practically amorphous.
(5) In conclusion, the use of metoclopramide in the postoperative period did not result in a quicker return of propulsive motility in the right or left colon as judged by the radio-opaque markers and serial abdominal radiographs.
(6) At the former site the membrane overlying the bud showed an electron opaque thickening which imparted to the mature particle an asymmetrical appearance.
(7) At that time, the universe underwent a crucial change: it went from being opaque to transparent.
(8) Our data confirm the poorer short-term orientation performance of jaundiced infants treated with phototherapy but do not indicate that covering the eyes with an opaque screen improves behavioral organization.
(9) All patients had at least one laparotomy, at which time a biopsy was obtained, radio-opaque clips were placed to define the extent of the gross tumor, and usually some form of bypass procedure was performed.
(10) Two types are present, a crystalline (clear) form and a white, opaque form with pigmentation resulting from a diene rubber.
(11) In two of these cases, pathologic findings included opaque ciliary body cysts, a ciliochoroidal effusion, retinal microaneurysms and hemorrhages, and detachment of both the sensory retina and the retinal pigment epithelium.
(12) The WF-1 are originally arranged around the WF-2, as small electron opaque granules making a dark ring, to move towards the periphery of the macrogamete body with maturation.
(13) Five fish with lateral lines cut at the opercula were unable to school when wearing opaque eye covers.
(14) A combined morphological, autoradiographic, and cytochemical study at the electron microscope level has been directed towards the formation of electron-opaque granules of cultured macrophages.
(15) The intranuclear spindle of yeast has an electron-opaque body at each pole.
(16) On lecithin agar, interpretation was easier, phospholipase A was detectable, and opaque zones were visible 1 or 2 days earlier than on egg yolk agar.
(17) New light-curable adhesive opaque resins were prepared using 4-methacryloxyethyl trimellitate anhydride (4-META), triethylene glycol dimethacrylate (TEGDMA), di (methacryloxyethyl) trimethylhexamethylene diurethane (UDMA) and titanium dioxide.
(18) In particular, most prototrophic strains obtained from patients with localized infection had proteins I with molecular weights varying from 35,000 to 38,000 daltons and gave predominantly opaque colonies.
(19) Resulting specimens yield an excellent view of the skeletal system and the injected vascular system without obstruction by opaque tissues or disruption by physical removal of connective tissue.
(20) Follicles greater than or equal to 5 mm in diameter were classified as clear (n=68) or opaque (n=72) based on their surface appearance.