[Influence of topical fluoridation of glass ionomer cements on inhibitory activity on cariogenic bacteria].

Glass ionomer cements are important options in restorative and preventive dentistry due to their adhesion to the tooth surface and fluoride release, which can decrease the risk of recurrent caries. The aim of this study was to define, in vivo, the influence of the topical use of fluoride gel on dental plaque bacteria growing on the glass ionomer cement. Fifteen patients were included into this study.

[Assessment of the sealing ability of some root canal sealers applied using lateral condensation and single point techniques].

Aim: To evaluate the sealing ability of AH Plus, Epiphany, and EZ-Fill Root Canal Cement and to assess leakage depending on the filling technique.

Material And Methods: Eighty extracted human single-root teeth were divided into eight groups often teeth each. Thirty teeth were hand-filed to MAF 40 using a step-back technique and filled by lateral condensation with gutta-percha and AH Plus (group 1), 0.

[Influence of the fluoride releasing dental materials on the bacterial flora of dental plaque].

The assessment of influence of silver-free, fluor releasing dental materials on dental plaque bacteria quantity. 17 patients were included into the study. 51 restorations were placed following manufacturers recommendations.

An in vitro study of affected dentin as a risk factor for the development of secondary caries.

The objective of the study was to investigate the association between the presence of residual caries (inner affected dentin) on the cavity walls of cavity preparations and the further development of secondary caries lesions. Two 2 x 5 x 2 mm cavities, one in the apical portion (A) and one in the cervical portion (C) of the root, were prepared on both the lingual (L) and buccal (B) surfaces of 18 extracted human roots. The apical cavities (AB and AL) were artificially demineralized for 30 min using a decalcifying solution, followed by staining with a caries detector dye and then excavation of irreversibly demineralized dentin, leaving behind a layer of inner carious dentin.

[Histopathological and immunohistochemical investigations of chronic periapical inflammations of permanent teeth].

Histopathological investigations were done in 72 cases of periapical granulomas and 9 cases of periapical cysts demonstrating that both granulomas and cysts were composed of granulation tissue varying in maturity. Immunohistochemical studies by the peroxidase method PAP showed the presence of light chains (kappa and lambda) and heavy chains (IgA, IgM, IgG, IgE). In the chronic inflammatory infiltrates of granulomas and cysts plasma cells with IgG prevailed.

[Histopathologic and histobacteriologic studies of chronic periapical changes of the permanent teeth].

Chronic periapical lesions were recognized clinically and radiologically in 109 patients aged from 10 to 79, twice as frequent in the maxilla as in the mandible. Histopathological analysis revealed periapical granulomas and cysts. Forty-eight periapical granulomas were studied histobacteriologically.

[The healing of periapical periodontitis after root canal filling with diaket].

A clinical and radiological study was performed to test the utility of Diaket in the conservative treatment of chronic periapical periodontitis. 86% of the treatments were successful with a follow-up of 12 months.

Electron microscopic study of peripheral giant-cell reparative granuloma.

Six giant-cell tumors have been examined by electron microscopic methods in order to determine their histogenesis and to expand knowledge of cell structures. The examination of giant cells revealed an abundance of cell organelles, especially mitochondria. Apart from typical stromal cells, such as fibroblasts, macrophages, and mast cells, clusters of stromal "light" cells were often found with an intimate relation between their cell membranes.