[Impression in adjoined complete prosthesis. Principles and techniques].
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Dental Impression Technique↗
Biomedical subjects
M Blandin
Publications and source records attributed to M Blandin.
Poly-2'-deoxy-2'-fluoro-cytidylic acid: enzymatic synthesis, spectroscopic characterization and interaction with poly-inosinic acid.
The polymerization of 2'deoxy-2'-fluoro-cytidine-diphosphate (dCflDP) by polynucleotide phosphorylase is barely detectable in the presence of Mg++ under usual experimental conditions for polymerization of nucleoside diphosphates. High concentrations of enzyme have to be used to accomplish the synthesis. Mn++ is a better activator than Mg++ for the reaction. cCflDP inhibits the polymerization of CDP and has a Km=8.8X10-3M, six times higher than CDP.- The polymer, poly (dCfl), ressembles in many respects poly(C), but not poly(dC): the acid selfstructure forms at similar pK's; interaction with poly(I) yields a 1:1 complex the CD spectrum of which is similar to that of poly(I).poly(C). Finally, the Tm's of poly(I).poly(dCfl) are comparable to those of poly(I).poly(C).
Circular Dichroism↗
[Original technique for secondary impressions in complete removable dentures (CRD)].
Regardless of its anatomic shape, an edentulous arch is formed by two types of mucosa, different in both nature and behavior. This is why the impression of such a complex requires two distinct steps with two different modeling materials with different consistency. The first step is the border molding of the mucosal reflexion zone with a silicone of medium viscosity, placed on the borders of the custom tray. The second step is the static impression of the inner part of the denture, with a fluid or very fluid silicone.
Dental Impression Technique↗