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Biomedical subjects

G Gambarini

Publications and source records attributed to G Gambarini.

40 records · Page 3Linked to original sources
PubMedDate not supplied

Molybdenum metabolism studied by means of stable tracers.

An investigation on molybdenum metabolism by administration of molybdenum stable isotopes was performed. Fractional intestinal absorption was determined in animals by the double tracer technique. The investigated subjects were given an enriched solution of Mo-96 orally and, a few minutes later, an enriched solution of Mo-95 intravenously. Blood samples were drawn at different times following the tracer administration. The Mo-95 and Mo-96 contents in plasma samples were determined by proton nuclear activation. The described methodology offers a means for the study of molybdenum metabolism in humans without radiation risk.

Administration, Oral↗
PubMedDate not supplied

[In vitro evaluation of five root canal sealers].

BACKGROUND: An adequate film thickness is an important property of an endodontic sealer, when used in combination with gutta-percha, to eventually fill minimal voids between gutta-percha and the root canal walls, ensuring an hermetic three-dimensional root canal obturation. The goal of the present study was to evaluate the film thickness of the following five root canal sealers: RSA, Rocanal R4, N2, Bioseal and Acroseal. METHODS: The testing procedures strictly followed ANSI/ADA spec. no. 57 for endodontic filling materials. All root canal sealers were mixed at room temperature strictly following mixing procedures advised by manufacturers. A small amount of sealer was placed between two glass plates and load of 147 N was applied vertically on the top glass plate. After 10 min, the thickness of sealers was measured by a micrometer assembled on a stereomicroscope (Lomo MBC 10). Data were collected and statistically analysed. RESULTS: Results (expressed in micron) were the following: RSA=9,3 (+/-1), Rocanal R4 95 (+/-12), N2 50 (+/-23), Bioseal 41 (+/-13) and Acroseal =9 (+/-2.55). CONCLUSIONS: RSA and Acroseal showed the best results (a statistically significant difference was noted among these sealers and the others). On the other hand Bioseal and (partially) N2 showed values compatible with a valid clinical use, while Rocanal R4 showed values higher than minimum standard values allowed by ANSA/ADA spec. no. 57.

Dental Cements↗
PubMedDate not supplied

[Obesity and mental disorders in childhood].

The aim of the present study was to establish the prevalence and the type of psychiatric disturbances in a group of 42 obese children (18 boys aged from 6.8 to 13.8 years and 24 girls aged from 2.8 to 15.4 years; weight excess mean +/- 1SD 146.7 +/- 17.4%) and to evaluate the efficacy of a psychological approach of obesity in childhood. The children were in a normal caloric diet and they were encouraged to reach a "target weight" in a given period of time. 22 children were randomly assigned the "analyzed" group (auxological, alimentary and psychological evaluation) and 20 to the "control" group (auxological and alimentary assessment). The psychological evaluation was performed in 20 children (the parents of two children refused to give their consent) by the following tests: creative drawing test; draw a man test (Machover); draw a tree test (Koch); draw a family test (Co-man); Rorschach's test; TAT (Thematic Apperception Test) or, in the younger, the Düss's tales. The results of these psychological tests have been communicated to the patients and or parents. The children were followed for a period of 7 months. We found in 8 children (40%) personality disturbances (which were severe in two cases) and a psychological support was started. The observed main types of disturbances were depression and anxiety. Both were due to a missing harmony between their parents, to a difficult relationship either with their mother or with other children, and to the bad child's opinion of himself. In 4 subjects a psychological support associated with diet promoted a slow, progressive and continuous weight loss.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗