Abstract
It is extremely important to prevent orthodontic and pedodontic patients from contracting caries. Although recently excellent progress has been made in the field of orthodontic and pedodontic materials, it is a common practice to use commercially marketed cement to fix the band of the orthodontic appliance and the crown etc during pedodontic treatment. Orthodontists are faced with the problem that tooth caties are caused by the orthodontic appliance itself, and pedodontists appear to have the same problem.
This study was undertaken in order to increase the hardness against the effects of crushing during mastication and to prevent the teeth from contracting dental caries. This report concerns the reaction of hydrotalcite on dental cement. Hydrotalcite has many different kinds of mineral substances, such as Mg4⋅5Al2(OH)13CO3⋅3.5H2O. Hydrotalcite solidifies only when used with “Unident”, which is commercially available The mixture (esulted in twice the hardness compare with other kinds of dental cement. The Raman spectra of all the specimens were recorded with a JASCO Model R-800 laser-Raman spectrophotometer. The refection profiles of all the specimens changed according to the volume of hydro talcite contained in dental cement.
