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Biomedical subjects

A I Patsakas

Publications and source records attributed to A I Patsakas.

18 recordsLinked to original sources
PubMed1989

[The degree of density of three anatomic regions in the orthopantomograph].

In the present study the degree of density of three anatomic regions in 215 orthopantomographs was evaluated. The three anatomic regions which were selected were: the maxillary sinus, the hard palate and the hard tissues (enamel and dentin) of the right lower first molar. The degree of density was correlated with the age and sex of the patients and it was found to increase with the age. The difference of the density was found to be statistical significant between the decade 1-10 compared to the other decades of age. The degree of density was greater in the women in all three anatomic regions but statistical significant only in the first molar region and in the decades 1-10 and 31-40.

Adolescent↗
PubMed1989

[Alterations in the size, shape and position of the condylar surfaces in the orthopantomograph. In vitro study].

Although the orthopantomograph has some disadvantages comparing with other techniques in the study of the TMJ, is useful sometimes for visualization of extensive osseous changes of the condyles. This study was done in order to study the exact site of the radiographic representation of the condylar surfaces in the orthopantomograph and to evaluate the degree of alteration of their size and shape. In two dry skulls (one edentulous and the other with complete dentition) a lead foil was placed in each one of the five surfaces of the condyles. The orthopantomographs were taken and the site of the radiopaque lead foil was evaluated for the radiographic representation of each surface. Also the degree of the alteration of the size and shape of the condylar surfaces was determined by the calculation of the two dimensions of each surface, in the skull and in the radiograph. The results of this study showed that all five condylar surfaces are contributing for the radiographic image of the condyle and always in an exact position each of them. The greatest distortion of the size and shape is taken place in the upper surface of the condyle and finally that the orthopantomograph cannot give us exact and accurate representation of the shape or the morphology of the condyle.

Humans↗
PubMedDate not supplied

[Bayes' formula used for diagnosis of causalgia].

285 patients complain for pain in the oral mucosa. 92 patients characterized the pain as causalgia. The informations from the history taken were estimated by Bayes' formula. The results from this study showed there is possibility to be causalgia the pain in the oral mucosa characterized as burning, smarting or both of them.

Bayes Theorem↗
PubMedDate not supplied

[Xerostomia--a complication of antihypertensive drugs].

A hundred fifty six patients taking antihypertensive drugs and complaining for xerostomia were examined, in order to compare the incidence of xerostomia with age and sex of those patients. Xerostomia was recorded in 62.3% of the patients. In 74.2% of the patients taking sympatholytic drugs xerostomia was recorded, and in 64.3% of the patients taking diuretic drugs. Xerostomia seemed to be a complication of ageing in both sexes with a predilection in women. Finally, the incidence of xerostomia during the first six months was 32%.

Age Factors↗