Some aspects of the formulation of alginate dental impression materials--setting characteristics and mechanical properties

Dental Materials : Official Publication of the Academy of Dental Materials
Navina A NallamuthuMangala P Patel

Abstract

To study the role of the various components of alginate dental impression materials. Experimental materials were formulated and their physical properties characterized and compared to commercially available counterparts (Neocolloid, Palgat Plus and Blueprint Cremix). Properties examined were: dimensional stability and weight change in water and artificial saliva; setting behavior; Shore A hardness and tear energy. The role of magnesium oxide was also investigated. Weight changes in water and artificial saliva can be attributed to an initial thermodynamic potential owing to the ionic content of the alginate, causing water to diffuse into the material. Water is then driven back out following a reversal of this potential. Hardness results for experimental materials were within the range obtained from the commercial materials. The hardness value for an experimental formulation that did not contain magnesium oxide was lower than values from the other experimental materials that did. Tear energies for all three experimental materials were greater than those of the commercial products. There were statistically significant differences between the two experimental materials that contained magnesium oxide and one that did not. With regar...Continue Reading

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Citations

Aug 29, 2014·BioMed Research International·Ricardo Danil GuiraldoMário Alexandre Coelho Sinhoreti
Jul 8, 2014·The Journal of Prosthetic Dentistry·Reiyal GoveasSita Thaworanunta
Jan 23, 2016·The Journal of Prosthetic Dentistry·Kishore GinjupalliNagaraja Upadhya Perampalli
Dec 9, 2016·Dental Materials Journal·Tomoe KanazawaMasashi Miyazaki
Sep 29, 2012·Brazilian Oral Research·Stéfani Becker RodriguesFabrício Mezzomo Collares
Jul 28, 2019·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Denise T de CastroAndréa C Dos Reis
Nov 9, 2016·The Journal of Advanced Prosthodontics·Karani Kurtulus, Kenan Tüfekci
Apr 21, 2015·Materials·Navina NallamuthuMangala Patel

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