What's the difference between corrosive and etch?

Corrosive


Definition:

  • (a.) Eating away; having the power of gradually wearing, changing, or destroying the texture or substance of a body; as, the corrosive action of an acid.
  • (a.) Having the quality of fretting or vexing.
  • (n.) That which has the quality of eating or wearing away gradually.
  • (n.) That which has the power of fretting or irritating.

Example Sentences:

  • (1) The influence of mucin on the corrosion behaviour of seven typical dental casting alloys was investigated.
  • (2) Pitting corrosion was seen on low-resistant Ni-Cr alloys, which had less Cr content.
  • (3) It would appear that there was airborne spread of the organism from these cooling water systems which had not received conventional treatment to inhibit corrosion and organic growth.
  • (4) Following the injection of suitable media, the arterial tree of 22 post-mortem human stomachs was studied by angiography, or corrosion and micro-dissection.
  • (5) It was determined that the Ag-rich phase of Ag-Pd-Cu-Au alloy was preferentially attacked to form Ag2S corrosion product.
  • (6) Crevice corrosion propagation for gamma 2-free vs. gamma 2-containing amalgams was characterized by lower acceleration and maximum rates during the most dynamic period.
  • (7) The traditional alloys used as metal bases for fixed partial dentures are accompanied by various problems such as corrosion, allergy, toxicity, casting, and preparation for both patient and prosthodontist and in magnetic resonance imaging for diagnosis.
  • (8) Similarly, significant correlations were found between the individual tissue reaction scores and crevice corrosion scores from the 201 individual sites, again for all devices and for the asymptomatic and symptomatic removal groups.
  • (9) In the cracks corrosion products usually found on amalgam were identified.
  • (10) The study included 101 specimens and used an injection-corrosion technique that obtained internal casts of the main trunks and coronary arterial branches.
  • (11) The use of methyl methacrylate corrosion-casts has made it possible to examine the intracranial microvasculature on a three-dimensional scale with the scanning electron microscope.
  • (12) The present paper states very briefly the main steps leading to the technique of scanning electron microscopy (SEM) of vascular corrosion casts.
  • (13) Early corrosion phenomena required re-polishing every three months.
  • (14) The objective of this study was to determine the in vitro corrosion products that resulted from crevice corrosion of low- and high-copper dental amalgams.
  • (15) We present eight cases of chemical burns of the eyes from titanium tetrachloride, an acidic corrosive liquid.
  • (16) They depended on the type of the AC-plates as well as on their age and corrosion intensity.
  • (17) Corrosion potential and zero resistance ammetry studies were carried out; the effects observed were variable and depended upon the nature of the metal and its surface condition.
  • (18) The electrical stimulus parameters produced by the Nucleus receiver-stimulator cause no loss of spiral ganglion cells or corrosion of the platinum band electrodes.
  • (19) Microvascular corrosion casts of chicken embryos between four and 19 days after fertilization have been prepared.
  • (20) If these points are considered, comparative data, even of quantitative nature, can be obtained from corrosion casts.

Etch


Definition:

  • (n.) A variant of Eddish.
  • (v. t.) To produce, as figures or designs, on mental, glass, or the like, by means of lines or strokes eaten in or corroded by means of some strong acid.
  • (v. t.) To subject to etching; to draw upon and bite with acid, as a plate of metal.
  • (v. t.) To sketch; to delineate.
  • (v. i.) To practice etching; to make etchings.

Example Sentences:

  • (1) After permeabilization, with attendant partial extraction, the preparation can be fixed, then viewed by either deep-etch replication, or by high-resolution scanning electron microscopy, with structure of interest revealed in deep view.
  • (2) The freeze-etch technique was used to study the morphology of Treponema refringens (Nichols).
  • (3) A thorough dental prophylaxis before acid-etching of enamel is often recommended.
  • (4) The results of the rapid-freeze and deep-etch procedure showed that the ridges observed by the surface replica method consisted of linear arrangements of elliptical particles on the ES face of the plasma membrane.
  • (5) All the summer deals in graphical, Etch-a-sketch form .
  • (6) When either predictability or bond strength was considered independently, several bracket systems, coupled with a particular etch time, had either high predictability or high bond strength.
  • (7) This demineralization was similar to enamel acid etched with 50% phosphoric acid for 2 mn.
  • (8) This study evaluated the bond strength between glass ionomer cements and laser-etched dentin.
  • (9) Acid etching smooths and cleans the dentinal surface.
  • (10) Examination of apposed replicas and deep-etched specimens indicated that at least some of the IMPs extend through the T. pallidum outer membrane and are exposed on the surface of the organism.
  • (11) Isolated appressed chloroplast membranes, highly enriched in photosystem II (PSII) activity, were examined by freeze-etch electron microscopy.
  • (12) The technique of freeze-etching for electron microscopy applied to isolated islets of Langerhans has permitted a successful evaluation of emiocytotic events on the cell surface.
  • (13) The tensile bond strengths of the bonding resin to the etched enamel surfaces were not significantly different.
  • (14) The etched porcelain laminate veneer is a new conservative treatment that offers a solution to fractured, discolored, and worn anterior teeth.
  • (15) SEM and TEM examinations suggested that dentinal collagen exposed by the etching but not entangled and impregnated by poly (4-META-co-MMA) easily deteriorated by water during the longer immersion.
  • (16) The performance of a commercial double-propane-jet freezer (Balzers QFD 101) has been assessed, for rapid freezing of fresh tissues in freeze-etch work.
  • (17) The purpose of this in vitro study was to determine the tensile bond strengths (TBS) of several orthodontic bonding systems and orthodontic brackets to enamel surfaces exposed to different etching procedures.
  • (18) We find that freeze-drying is the most reliable and easy method for molecules that withstand distilled water; freeze-etching can be successfully applied to transmembrane proteins (even in the presence of detergents or salt); the glycerol-spray technique provides an excellent alternative to the cryotechniques in particular for studies of single linear molecules.
  • (19) After acid etching, filtration produced a 32-fold increase in permeation.
  • (20) On the corresponding PF face of the plasma membrane, linear arrangements of the intramembrane particles (IMPs) of about 8 nm in diameter were observed by both the deep-etch and freeze-fracture methods.