Systems of ordered fractal aggregates of fluoroapatite-gelatine composites were chosen to mimic the growth of the biosystem apatite-collagen, which plays an important role in the human body as functional material of teeth and bones. The morphogenesis of these particles starts with elongated hexagonal prismatic seeds, followed by fractal branching and the development of growing dump-bell states....

Dental caries has been considered as a historically important component of the global oral disease burden. Thus, the quest for an ideal restorative material with optimum physical properties and durability exists. There was a lack of availability and development in the field of restorative materials. Though amalgam has many drawbacks, such as postoperative tooth sensitivity, susceptibility to fr...

A large group of human bones were excavated during the 1930’s from the Moundville archaeological site in Alabama. If a chronology could be assigned to them, the bones might provide a guide to the changes which took place as Moundville flourished, since pottery and other objects were often buried with the individuals. A recent pottery classification based on style suggests three major time perio...

Several properties of the fluoride ion at physiological concentrations are known which may be concerned with its actions in reducing dental caries. T h e properties that have been most thoroughly studied as a basis of the anticaries action are: (I) the incorporation of fluoride in the hydroxyapatite of the calcified tissues, both during and after their formation, thus increasing the proportion ...

introduction iron-apatite ore deposits well known as kiruna iron type formed in association with calc-alkaline volcanism from proterozoic to tertiary (hitzman et al., 1992). liquid immiscibility in an igneous system was proposed to explain the formation of the iron oxides accompanying apatite in mineralized zones (förster and jafarzadeh, 1994; daliran, 1999). the mode of ore formation however, ...

The results of the study of the impact of phosphogypsum on the accumulation and migration of fluorine in the southern chernozems of the North-West Black Sea coast area of Ukraine are presented herein. It has been found that the introduction of phosphogypsum as a chemical ameliorator of irrigated chernozems resulted in a fluorine increase both in the soils and in the soil (lysimetric) waters.1 D...