[Prosthodontic rehabilitation of immediately placed dental implants following soft tissue augmentation. Case report].

A 68-year-old nonsmoking male patient with thin gingival biotype presented for treatment of mobile mandibular left premolars. Extraction of teeth and immediate dental implant placement has been suggested. To prevent vestibular gingival recession and insure tissue stability by increasing thickness of marginal gingiva, acellular dermal matrix allograft was applied using the coronally advanced modified tunnelling technique.

[Investigation of the venodilatory effect of vascular endothelial growth factor (VEGF) in rat gingiva].

VEGF induces proliferation of endothelial cells, stimulates angiogenesis, and increases vascular permeability in many organs. Nevertheless, we have only limited information about its role on gingival hemodynamics, especially in venules. Therefor the aim of this study was to assess the acute circulatory effects of VEGF on rat gingival venules by means of the following protocol.

[Replacement of extracted tooth by means of implant-supported direct abutment. A case report].

Abutment manipulation, namely repeated screwing and unscrewing may have an affect on the final marginal bone level, consequently, soft tissue position around endosseous implants. In order to maintain the crestal bone level constant and avoid the apical recession of gingiva final abutment (Direct Abutment, Astra Tech) has been connected to submerged OsseoSpeed 4.5 dental implant (Astra Tech) in position of tooth 14, immediately after second surgical exposure.

Venodilatory effect of vascular endothelial growth factor on rat gingiva.

Background: Endothelial cell proliferation, angiogenesis, and increased vascular permeability are among the effects of vascular endothelial growth factor (VEGF) in various organs. However, the effects of VEGF on gingival hemodynamics, especially on venules, have not been thoroughly investigated. This study investigated the acute circulatory effects of VEGF on rat gingival venules.

[Comparison of guttapercha points of different brands].

Many new devices and instruments have been developed in the field of endodontics, however, even today guttapercha is the most commonly used root canal filling material and lateral condensation is still widely the technique of choice. It is crucial that the guttapercha point should not bend away during insertion into the root canal, and that the size of the guttapercha point is in accordance with the size-coding marked on the container. However, there is no data on the difference between the dimensional accuracy and the rigidity of guttapercha points produced by various manufacturers.

[Significance of infection control in dentistry: a review].

Dental care is a field of high priority regarding the risk of infections. Since many carriers are not aware of their infection, it may happen that the dentist meets a patient, in whom an earlier infection can be proven by serology, but the patient is not aware of it and the clinical signs and symptoms are missing, as well. For this reason, the dentist has to consider every patient potentially infected.

[Determination of working length in general endodontic practice].

Accurate determination of root canal length is essential for successful endodontic therapy. Two methods are generally accepted for working length measurements: radiographic length determination and by the means of electronic apex locators. The purpose of this study was to evaluate the working length determination habits of Hungarian dentists using a survey form containing 15 selective closed questions for data collection.

Dose-related effects of epinephrine on human gingival blood flow and crevicular fluid production used as a soaking solution for chemo-mechanical tissue retraction.

Statement Of Problem: Epinephrine is a frequently used agent for impregnation of the retraction cord. Removal of retraction cord from the gingival sulcus has been shown to elicit a hyperemic response that could be prevented by epinephrine. However, the epinephrine may cause local or systemic adverse effects in the circulation.

[Problems with working length determination during endodontic therapy].

Accurate working length (WL) determination is a crucial part of successful root canal therapy. Working length is the distance from the coronal reference plane to the apical constriction. The apical constriction, also referred to as cementodentinal junction, represents the transition between the pulpal and the periodontal tissues.

In vitro kinetic study of absorbency of retraction cords.

Statement Of Problem: The soaking time required for liquid uptake by retraction cords is a crucial factor in the successful gingival retraction procedure.

Purpose: The aim of this investigation was to determine the optimal soaking time for 3 retraction cords of different thickness to ensure adequate uptake of the hemostatic solution.

Material And Methods: Braided ULTRAPAC retraction cords of 3 different thicknesses (No.

[Kinetic study of the liquid uptake of retraction cords].

The soaking time ensured for the liquid uptake of retraction cords is a crucial factor in the successful gingival retraction procedure. The aim of the present investigations was to determine the optimal soaking time for three cords of different thickness. The capability of liquid uptake of the cords was measured by a gravimetric method using four different sulcus retraction solutions.

Antimicrobial efficacy of various root canal preparation techniques: an in vitro comparative study.

In this study, we compared the antimicrobial efficacy of various root canal preparation techniques and instruments in the root canals of 40 human first maxillary premolars extracted for orthodontic reasons. After extirpation of the pulp, teeth were sterilized in an autoclave. Then, the root canals were infected with Enterococcus faecalis suspension and the teeth incubated at 37 degrees C for 24 h.

[Advancements in dental preparation technique (literature review)].

This paper has reviewed the literature on the methods of cavity preparation. The different methods are summarised in Table 1. Nowadays rotary instruments are accepted as standard for cavity preparation.

Effects of pre-soaked retraction cords on the microcirculation of the human gingival margin.

In the direct treatment of cervical lesions and to improve the impression-making procedure prior to fabricating indirect restorations, exposure of the gingival sulcus and control of hemorrhage or gingival fluid seepage are a prerequisite. For gingival displacement, cords impregnated with medicaments are widely used. In this investigation, the authors first studied in vitro the time course of fluid absorption by retraction cords immersed in test solutions.