Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Life Sciences
Early Phase Changes During The Setting Of High Copper Amalgams, T. Ruzickova, J. Had
Early Phase Changes During The Setting Of High Copper Amalgams, T. Ruzickova, J. Had
Scanning Microscopy
X-ray diffraction analysis has been used to evaluate the phase composition of two (spherical and lathe cut) HCSC amalgam alloys and early phase changes in these amalgam in the time interval 2.5 min to 7 days after trituration. A method appropriate for the evaluation of these changes was developed. Only two phases were found in alloys Valiant and Ana 2000: gamma(Ag3Sn) and epsilon(Cu3Sn). In amalgams, no diffraction peaks were observed corresponding to gamma 2 phase in the time interval form 2.5 min to 7 days after trituration. The relative concentration changes of the reaction products of …
Analyses Of Dental Pulp In Restored Teeth, D. L. Lentz, J. T. Buchanan, D. R. Basinger
Analyses Of Dental Pulp In Restored Teeth, D. L. Lentz, J. T. Buchanan, D. R. Basinger
Scanning Microscopy
Restored teeth were extracted from test animals at four time intervals (1 hour, 1 day, 1 week, and 3 months) following amalgam insertion. Extracted teeth were frozen in liquid nitrogen, cryo-fractured so as to expose the pulps and then freeze-dried. Pulps were analyzed for mercury content by energy dispersive spectrometry (EDS) and atomic absorption spectrophotometry (AAS). Mercury levels appeared below the detection limits of EDS but could be detected by AAS which showed the highest readings seven days after amalgam insertion.