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Biomedical subjects

L Izikowitz

Publications and source records attributed to L Izikowitz.

15 recordsLinked to original sources
PubMed1990

Malignant tumours in Swedish dental personnel: a comparative study with the total population as well as with some specific occupational groups.

By linking the records between the Swedish census of 1970 and the cancer register for the period 1971-1984 the question was investigated as to whether an increased risk of, in the first hand, tumours of the liver, the kidneys or the nervous system could be found among dental personnel, and if so, whether it could be correlated with age. No significant higher risk could be demonstrated for any of these sites of tumours, neither for dentists, nor for dental nurses, dental technicians, nor for dental personnel collectively in comparison to the risk in the general Swedish population. For dental personnel the SIR value for primary liver tumours was 1.3, 95% CI: 0.6-2.4, for tumours of the kidneys the SIR was 1.0, 95% CI: 0.6-1.5, and for tumours of the nervous system the SIR was 1.1, 95% CI: 0.8-1.6. When these groups of tumours were taken together, a significantly increased risk (p less than was found only for male dentists, where 33 cases were observed against 22 expected. This increased risk does not seem to have any counterpart in any other category of dental personnel, and therefore the significant figures may be interpreted as a chance result. The noticeably increased and decreased risk levels which were found in other sites of tumours for dentists could also be demonstrated in other groups with university education with one exception: haemo-lymphatic malignancies for which male dentists display a significantly lower risk. For all types of malignant tumours of dental personnel there was a nonsignificantly increased risk, the SIR = 1.07, 95% CI: 0.99-1.15.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1985

A long-term prognosis for the free-end saddle-bridge.

A consecutive series of eighty-seven saddle-bridges with free-end saddles, executed by the author during the years 1958-72, was investigated in 1982. The aim was to assess the long-term prognosis. Five years after application 98% of the bridges were still functioning. The corresponding percentage after 10, 15 and 20 years was 82, 69 and 49%, respectively. The risk that saddle-bridges cease to function is very low during the first 5-year period but significantly higher thereafter. Soldering fractures constitute an important cause of the removal of appliances during the first 8 years following application. After this time the most frequent causes are caries and loosening of the teeth. Factors such as sex, time of application, patient's age, length of saddle and whether the bridges were fitted in the mandible or maxilla, have not had a significant influence on the prognosis. Furthermore, no statically significant difference has been found between the long-term prognosis for full and partial saddle-bridges. On the other hand, patients with a removable full denture in the opposing jaw show a significantly worse prognosis (P less than 0.05) than patients without a denture in this jaw. The results of the present study indicate that the short-term prognosis for saddle-bridges is very favourable and that the long-term prognosis is so good that saddle-bridges can constitute an alternative therapy even in jaws with as few as three remaining teeth.

Adult↗
PubMed1976

A long-term prognosis for the fixed saddle-bridge. A study of 100 constructions.

This report constitutes a long-term study of 100 saddle-bridges applied by the author during the years 1958-1973. The aim of the investigation has been to assess the prognosis for this form of therapy. The probability that a saddle-bridge will still be functioning completely, without repair, after 5 years is 93%, and after 10 years (as also after 12 years) 83%. Only 12% of the appliances had been removed 12 years after the application. The risk of defects is about the same during the first 5-year period after the application as it is during the second and the third 5-year periods. A comparison between saddle-bridges applied before and after 1965 shows no demonstrable difference as regards the 5-year prognosis in spite of modifications with respect to range of indication and therapy. The causes of the defects have been divided into biological and technical. During the first 5-year period technical defects appear to be in the majority, whereas during the later stages, biological defects predominate. Background factors such as sex, the age of the patient, length of saddle, localization in the jaw do not prove to have any appreciable importance for the prognosis. There is, on the other hand, a significantly better prognosis when the opposing jaw is furnished with the patient's own teeth and/or fixed bridges than with a removable denture. The author points out that from the result of the study, the saddle-bridge has such a good long-term prognosis that its range of application for fixed constructions should be considerably extended.

Adult↗