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![]() GOREA, Corneliu, CIOBANU, Sergiu. Morphological and functional restoration of frontal teeth with fluid composite materials. In: Cercetarea în biomedicină și sănătate: calitate, excelență și performanță, Ed. 1, 20-22 octombrie 2021, Chişinău. Chișinău, Republica Moldova: 2021, p. 458. ISBN 978-9975-82-223-7 (PDF).. |
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Cercetarea în biomedicină și sănătate: calitate, excelență și performanță 2021 | ||||||
Conferința "Cercetarea în biomedicină și sănătate: calitate, excelență și performanță" 1, Chişinău, Moldova, 20-22 octombrie 2021 | ||||||
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Pag. 458-458 | ||||||
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Background. Aesthetic considerations of teeth have always played an important role in the professionalism of dentists. Over the years, the restoration of dental harmony has changed its character, from accidental to necessary and from optional to mandatory, as aesthetic defects have become less and less accepted. Objective of the study. Determination of flexural strength of fluid and chitous composites. Material and Methods. For this purpose, 7 samples in the form of a semi-cylindrical bar (≈4x2x20mm) were prepared for each type of material, divided into 3 groups: chitosan composite, fluid composite and chitosan composite heated to t˚55C. A hard silicone matrix was made to prepare all the samples. The chitous composite was applied and condensed to ensure a consistent thickness for all samples. The samples were polymerized according to the instructions for use recommended by the manufacturer. With the help of the polypants, the surplus material was removed and then all the dimensions of the samples were checked with the help of the caliper. Results. Two values from each group were excluded from the mean calculation (highest and lowest value) due to the highest deviation from the mean, after which a sample of 5 samples based on which the average calculation was performed remained, and error assessment for the experimental sample (standard deviation). The highest mean value was found to be in group 2 (59.5 ± 8.6 MPa), followed by group 3 (42.5 ± 4.2 MPa) and group 1 respectively (31.9 ± 3.2 MPa). Fluid composite materials showed statistically higher average σf values compared to the researched composite composites. It is noteworthy that the values of the confidence intervals for all samples do not overlap, increasing in the row Group 1 <Group 3 <Group 2. Conclusion. Based on the large differences between the values of flexural strengths, and the lack of overlapping confidence intervals for each sample (in fact, for different materials), as well as the sufficient number of samples in each sample (5 samples left after censorship), it can be concluded , that fluid composite materials demonstrate superior flexural strength to composite composites. |
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Cuvinte-cheie Fluid composites., Direct dental restorations., Flexural strength, compozite fluide, restaurări dentare directe, rezistența la flexiune |
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