Objective. The aim of the study was to compare under in vitro conditions marginal sealing of 4 different bulk-fill materials composite restorations of class II. Methods. Comparative evaluation concerned 4 composites of a bulk-fill type: SonicFill, Tetric EvoCeram Bulk Fill, Filtek Bulk Fill, and SDR. The study used 30 third molars without caries. In each tooth 4 cavities of class II were prepared. The prepared tooth samples were placed in a 1% methylene blue solution for 24 h, and after that in each restoration the depth of dye penetration along the side walls was evaluated. Results. The highest rating (score 0, no dye penetration) was achieved by 93.33% of the restorations made of the SDR material, 90% of restorations of SonicFill system, 86.66% of restorations of the composite Filtek Bulk Fill, and 73.33% of restorations of the Tetric EvoCeram Bulk Fill. Conclusion. The performed study showed that bulk-fill flowable or sonic-activated flowable composite restorations have better marginal sealing (lack of discoloration) in comparison with bulk-fill paste-like composite.

The evaluation of clinical relevance in this research is crucial to simplify the transfer of knowledge from research by materials engineering into practice in dentistry.

Introduction.Midline gap (diastema) is a space between two teeth, commonly between two incisors. The treatment can be provided by orthodontic, conservative (restorative) or prosthetic methods.Aim. The aim of the study was an assessment of using direct composite restoration in aesthetic closing of diastema. Material and methods. The space correction between teeth was performed among female and male adult patients with diastema of 3 to 6 mm. The microhybrid resin composite was used for the composite build-ups with a help of celluloid or silicon matrix due to its good handling properties and shade matching, and polishability properties.Results. Depending on the size of diastema, the partial or total closing was done to achieve the cosmetic effect. The obtained clinical results were highly assessed both by dentists and patients. It was possible to obtain optimal aesthetic results with resin composite restorations only.Conclusions. The simple closure of diastema with direct composite reconstructions can result in successful outcome and patient's satisfaction.

Research on the dental restorative materials employed in remedying dental cavities has been conducted on many levels and areas, both with application of clinical and laboratory methods. One of the elements that determines whether the restoration may be degraded is the condition of its surface. The aim of the study was to assess the texture surface of composite restorations using a non-contact method of teeth models scanning. In this work, ten medium size cavities on the occlusal surfaces of molars in adult patients were prepared and restored with resin composite. Before undertaking the procedure and after the finishing and polishing of the restorations, impressions were taken and sent into the laboratory so as to prepare plaster casts. Every cast was then scanned utilizing the non-contact 3D surface measurement instrument so as to assess the texture surface of the restoration. The resulting three dimensional analyses of post-restoration models showed the correct marginal adaptation of resin composite dental material to the hard tooth structures and its smooth filling occlusal surface. Additional comparison of scans done before and after restoring the cavities allowed the calculating of differences in volume, mean and maximum heights. The applied method of analysis is thought to be helpful in the detailed evaluation of restoration dental material texture. Moreover, the enabled possibility of continuous observation is expedient for assessing the usefulness of the method in standard dental practice.

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On the basis of the literature, the detailed information about using ozone in dentistry was presented in this paper. Special attention was paid to its practical aspects, especially in conservative dentistry. Indications in the application of ozone were: caries prophylaxis, early carious lesions, dentin caries, root caries, enamel cracks, dentine hypersensitivity, tooth whitening, tooth canal disinfections, infectious diseases occurring in oral cavity mucosa, marginal parodontium diseases, dental surgery and implantology. The time of aplication of ozone was dependent on the indications of DIAGNOdent and Clinical Sevesity Index according to Lynch and Holmes. Additionally, special available ozone apparatuses were described in this paper.Zastosowanie ozonu w stomatologiiuwagi praktyczne W pracy na podstawie piśmiennictwa przedstawiono informacje na temat ozonu i jego praktycz nego zastosowania w stomatologii. Zwrócono uwagę na szczegółowe wskazania do zastosowania ozonu głównie w stomatologii zachowawczej: profilaktyce próchnicy, wczesnych stadiach rozwo ju choroby próchnicowej, próchnicy zębiny i korzeni, pęknięciach szkliwa, nadwrażliwości zębiny, wybielaniu zębów, leczeniu endodontycznym, stanach zapalnych błony śluzowej jamy ustnej i przy zębia brzeżnego oraz po leczeniu chirurgicznym i implantologicznym. Czas aplikacji gazu wyzna czano posługując się głównie wskaźnikiem Clinical Severity Index wg Lyncha i Holmsa lub zgodnie ze wskazaniami lasera diagnostycznego. W pracy przedstawiono również urządzenia wytwarzające ozon do celów terapeutycznych.