Search PubMed⌕ Search

Biomedical subjects

R Garberoglio

Publications and source records attributed to R Garberoglio.

At least 37 records · Page 2Linked to original sources
PubMed1980

[Radiological signs of a disease that is dying out: hepato-splenic atrophy and cholangiocarcinoma after administration of thorium dioxide (Thorotrast)].

The cases of two patients with radio-opaque residues of contrast medium (Thorotrast) in the abdomen, at the level of the liver, the spleen and certain lymph node groups of the hepatic hilum and the pancreas are reported. In one of the two patients (both of whom had undergone examination with this contrast medium in the '40s) necropsy showed the existence of cholangiocarcinoma. It is therefore considered useful to recall the X-ray signs typical of this pathology, which is dying out after the abandonment of thorium dioxide as an X-ray contrast medium.

Adenoma, Bile Duct↗
PubMed1980

Occlusion of dentinal tubules under superficial attrited dentine.

A scanning electron microscope (S.E.M.) was used to examine dentinal tubules transversely fractured approximately 1.5 mms below a superficial dentinal attritional surface. The material not only included vital teeth but also young, intact premolars implanted into removable dentures. In these teeth the enamel on the buccal cusps was removed and the dentine exposed to attrition for 3 years. For comparison the tubules of intact teeth transversely fractured at the same level were examined. Intact control revealed open tubules of normal size in the area examined. Under attrited surfaces many tubules on the same level were completely occluded with material similar to that seen in peri-tubular dentine. Other tubules had varying degrees of reduction of the tubule lumen. The situation was the same in 4 teeth attrited in removable dentures. The findings support the view that while tubules in sclerotic dentine in teeth subjected to attrition may be occluded by a continuous growth of peritubular dentine, the oral milieu and saliva may also contribute to this process.

Adolescent↗
PubMed1979

In vivo effect of oral environment on etched enamel: a scanning electron microscopic study.

After etching the enamel in teeth of young children with 50% buffered phosphoric acid and allowing the teeth to remain in the oral environment for a few months, an irregular enamel surface similar to the morphology of recently etched enamel was noted by means of scanning electron microscopy. In addition, the enamel surfaces were covered with plaque. Accordingly, observations by other authors, that etched human enamel takes on a normal appearance after short exposure in the oral cavity, could not be confirmed. However, when the surface of the etched enamel was pumiced, the enamel reacquired both the shine and appearance of non-etched enamel.

Acid Etching, Dental↗
PubMed1975

[Enamel etching for conservative dental treatment].

The enamel etching technique has contributed towards better retention and smaller cavities, and towards less microfissures at the cavity margins. The different etching acids and their concentration are described, and their function illustrated by EM photographs. Phosphoric acid of a concentration between 37 and 50% seems to give the best results. The morphology of the etched surface and the measurements of the degree of adhesion of different composites suggest that the use of bonding agents is not imperative. The practical indications for the etching technique in the dental office are described.

Adult↗