Critical analysis of an experimental set-up generally used for the permeability evaluation of dental lining material.
The diffusion constants of iodide through dentine membranes were determined. The DI-values were within the range generally obtained by other investigators. When the estimation of the diffusion coefficient through a well defined polycarbonate membrane was calculated the value was strongly affected by the diffusion through the unstirred diffusion layer. By using such an experimental approach it seems necessary to develop a new cell equipped with a double stirring system (one in each compartment) in order to reduce strongly the thickness of the unstirred diffusion layer.
Haikel
Y
Y
Centre de Recherches Odontologiques (CJF INSERM 92-04) Université Louis Pasteur, Faculté de Chirurgie Dentaire, Strasbourg, France.
Voegel
J C
JC
Allemann
C
C
D003736:Dental Cavity Lining; D003764:Dental Materials / Q000737:chemistry*; D003804:Dentin / Q000378:metabolism; D004058:Diffusion; D015194:Diffusion Chambers, Culture; D006801:Humans; D007457:Iodine Radioisotopes; D008422:Materials Testing / Q000295:instrumentation / Q000379:methods*; D008567:Membranes, Artificial; D010539:Permeability; D011076:Polycarboxylate Cement / Q000737:chemistry
D003764:Dental Materials; D007457:Iodine Radioisotopes; D008567:Membranes, Artificial; D011076:Polycarboxylate Cement; C005506:polycarbonate