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Biomedical subjects

I Anić

Publications and source records attributed to I Anić.

23 records · Page 2Linked to original sources
PubMed1991

[Possibility of the application of CO2 laser in the prevention of demineralisation of the enamel].

Tooth enamel laser irradiated under certain conditions previously has been shown to have reduced subsurface demineralizations rate. The teeth were cut vertically in half with a thin diamond disc. One half of each tooth served as a control and the other half was irradiated using the CO2 laser. Laser energy was applied at incisive labial surface (15 W, 0.5 s, spot size 3.5 mm). After irradiation the specimens were coated with wax leaving only the windows 3 x 3 mm on the labial surfaces. After experimental demineralisation with 0.2 M sodium acetate and 0.1 M lactic acid solution for 10 days, dissolved calcium and phosphorus were analyzed in the demineralizating solutions using atomic absorption spectrophotometry and colorimetric method (method described by Lowey), respectively. Ca and P concentrations in demineralizing solutions per unit surface area were lower then the controls.

Dental Enamel↗
PubMed1991

[Composite retention area produced by CO2 laser beam].

Laser effect on enamel is manifested as consequence of temperature changes. Enamel melts, vaporises and a crater, and fissures are formed. Retention surface for anchoring of composite resin was obtained in intact approximal surfaces of premolars with CO2 laser (0.5, 1 and 3 W, sport size 1 and 1.5 mm, 0.2 and 0.5 s). The study results reveal composite and lased enamel interfaces are stronger then composite and inlased enamel (p less than 0.01) but weaker than composite and acid pretreated enamel interface (p less than 0.01).

Acid Etching, Dental↗
PubMed1991

[The antimicrobial efficiency of aqueous solutions of calcium hydroxide on Streptococcus mutans, Streptococcus faecalis and Candida albicans, in vitro].

Calcium hydroxide preparations Ca(OH)2 are used as water solutions, putly, liner, cement or artificial material. The therapeutic effect of each medicaments depends on physical and chemical characteristic of additional components. The aim of the paper is to research the sensitivity of Streptococcus faecalis and Candida albicans to different water solution concentrations of calcium hydroxide. As solid plates, Bacto-Mitis-Salivarius agar was used for S. mutans, Torlak blood agar for S. faecalis and Sabourand agar "Torlak" for C. albicans. The holes were drilled in solid plates and were filled by 0.2 ml of water solutions of Ca(OH)2. Preparations, created as described were incubated aerobically at 37 degrees C in the period of 48 hrs. Results were read after 24 as well as after 48 hrs. The examined solutions of Ca(OH)2, revealed the highest antimicrobic effect after 24 hrs. The result remained unchanged even after 48 hrs. The inhibition of S. mutans growth on the solid plate occurred with the concentration of Ca(OH)2 solution from 271.18 x 10(-2) mol/dm3 and pH 12.76. The growth of S. faecalis at the solid plate was inhibited with the concentration of 3335.21 x 10(-3) mol/dm3 and pH 12.82. The inhibition of C. albicans growth on solid plate occurred with the concentration of Ca(OH)2 solution from 1023.20 x 10(-3) mol/dm3 and pH 12.84. The difference in the sensitivity of the examined microorganisms at the same concentrations of Ca(OH)2 solution was observed.

Calcium Hydroxide↗