Studies on electrical and thermal properties of dental glass ionomer cement
A commercially available dental Glass Ionomer Cement (GIC) was studied after setting at room temperature (300 K) to understand its DC electrical conductivity, dielectric and thermal properties. The dental GIC’s are supposed to have free mobile charge carriers like F- ions. Interestingly this material loses its conductivity above 80°C and behaves like a non-polar substance. The frequency dependent dielectric studies also indicate the loss of mobile charge carriers in the samples annealed at 80°C. The DSC and TGA studies indicate that the material loses H2O exothermically at 100°C. This is attributed to the onset of a secondary setting reaction.
Investigation of glass–ionomer cements using differential scanning calorimetry
Six commercial glass–ionomer cements commonly used for various dental applications have been investigated using differential scanning calorimetry (DSC). The heat-flow behaviour and heat capacity of the cements were measured during isothermal (at 37°C) setting reactions. The DSC results show that all materials undergo an exothermic setting process, but with different enthalpies of reactions and different heat capacities; there are no remaining endo- or exothermic reactions after the setting of the cement. All materials examined were found to be effective thermal insulators.
Addiction‐Specific CACREP Standards in Clinical Mental Health Counseling Programs: How Are They Met?
In 2009, the Council for Accreditation of Counseling and Related Educational Programs (CACREP) included training standards specific to addiction for clinical mental health counseling programs. This study surveyed CACREP-accredited program coordinators to determine how addiction-specific standards were addressed.