What's the difference between acrylic and enamel?

Acrylic


Definition:

  • (a.) Of or containing acryl, the hypothetical radical of which acrolein is the hydride; as, acrylic acid.

Example Sentences:

  • (1) The teeth were embedded in phenolic rings with acrylic resin.
  • (2) In this study, a technique is described by which large obturators can be retained with an acrylic resin head plate.
  • (3) Eight macerated human child skulls with a dental age of approximately 9.5 years (mixed dentition) were consecutively subjected to an experimental standardized high-pull headgear traction system attached to the maxilla at the first permanent molar area via an immovable acrylic resin splint covering all teeth.
  • (4) They were an order of magnitude larger for poly(acrylic acid) due to the lack of cationic groups.
  • (5) By embedding the biopsy in the acrylic resin LR White, unsupported sections of which are stable in the electron beam, light and electron microscopy and immunocytochemistry become feasible on sections from the same block.
  • (6) One must pay attention to the setting expansion of plasters and to the setting contraction of acrylic resins which may be very important if these materials are used without care.
  • (7) This study suggests that glass fibers can be pretreated with a silane coupling agent to obtain a chemical bond between the fibers and the acrylic resin.
  • (8) For comparison, the same characteristics of currently used 20% water-soap benzylbenzoate emulsion and of the new ointment base, SAKAP (acryl copolymer), have been examined.
  • (9) The medium-viscosity polyvinylsiloxane impression material showed significantly higher adhesive bond strength to polystyrene than autopolymerizing acrylic resin whereas polysulfide and condensation silicone impression materials adhered significantly better to autopolymerizing acrylic resin than polystyrene.
  • (10) To support this, a small study on dentate subjects suggests the covering of the palatal mucosa with an acrylic plate does not affect masticatory performance.
  • (11) Use of a vacuum device on the mixed acrylic resin works as well as pressure polymerizing.
  • (12) Total joint arthroplasties with metal, plastic, and acrylic materials have revolutionized the surgical treatment of arthritis.
  • (13) The polyacrylate fraction, as well as glucose and acrylate, are removed and mineralized to CO2.
  • (14) The effect of nine different designs on the strength of acrylic resin attachment to the partial denture framework in anterior endentulous spaces was tested.
  • (15) Initially the release of chlorhexidine acetate from cold cured acrylic strips into water, was measured spectrophotometrically over a 15 day period.
  • (16) In attempt to standardize an experimental model for biomechanical studies of unstable trochanteric fractures, acrylic models of the proximal femur were investigated by the photoelastic technique.
  • (17) All bridges were made of type-3 casting gold and heat-cured acrylic veneering.
  • (18) The acrylic acid polymer showed a longer GI transit time than the methacrylic acid polymer, and this in vivo GI transit result is consistent with in vitro bioadhesion test results.
  • (19) Many of the acrylic resin and bent-wire temporary partial dentures in use today produce pathologic changes in the oral mucosa.
  • (20) Results of in vivo metabolism studies with acrylic acid (AA) have indicated that 60-80% of the administered dose is excreted as CO2 within 2-8 hr of oral dosing of rats; however, the pathway of AA metabolism to CO2 in mammals has not been determined.

Enamel


Definition:

  • (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.

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