PubMed HealthSearch

Biomedical subjects

R T Allison

Publications and source records attributed to R T Allison.

9 recordsLinked to original sources

X-ray microanalysis of 'psuedo' hyaline bodies in odontogenic cysts.

X-ray microanalysis has revealed qualitative differences in the elemental composition between so-called hyaline bodies occurring in the connective tissue wall of an odontogenic cyst and hyaline bodies occurring within the epithelial lining of these cysts.

Electron Probe Microanalysis

Hyalin material bounding dystrophic calcification in the epithelial lining of odontogenic cysts.

Areas of dystrophic calcification present in the epithelial lining of two apical periodontal cysts have been shown to exhibit an outer layer of hyalin material. Similar calcific areas in the connective tissue walls do not show hyalin boundaries. Hyalin material has been found around muscle fibers present in the epithelial lining of a residual dental cyst. It is believed that the hyalin material is secreted by the epithelial cells and these observations are considered to be supporting evidence that hyalin bodied arise as an epithelial secretion.

Calcinosis

Microprobe and microradiographic studies of hyalin bodies in odontogenic cysts.

Microprobe analysis of Araldite embedded sections of hyalin bodies revealed the presence of sulphur, chlorine, calcium and in some cases iron. The results have been compared with those obtained from control tissue sections of human heel skin, a thrombus occluded vessel and mineralized spherules in a dental follicle. Microradiographic studies showed that the density of hyalin bodies increased progressively towards the core. Isodensitracing confirms the laminar configuration of hyalin bodies as seen electron microscopically. The findings conform with the hypothesis that hyalin bodies originate as an epithelial secretion.

Densitometry