In Vitro Study of the Structure and Adhesive Interface in Direct Restorations with Commercial Nanocomposite Materials

Almasi, Adrian; Todor, Liana; Rațiu, Cristian; Popovici, Ramona Amina; Tigmeanu, Codruta Victoria; Tofan, Sergiu Alexandru; Porumb, Anca

doi:10.37358/mp.19.1.5165

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…In the present study, glass test tubes were used to obtain A-PRF, although there are studies that preferentially indicate plastic test tubes or test tubes made of glass with the walls lined by plastic, because glass hardness more rapidly promotes coagulation cascades, unlike plastic elasticity that would prolong the coagulation time [43], but there are studies evidencing the detachment of silica microparticles during centrifugation of test tubes containing plastic masses. Although the silica particles of test tubes are considered to be stable, the possibility of inducing cytotoxicity in inflammatory cell responses was found [44], a behavior similar to that of direct dental adhesive systems [45].…”

Section: Resultsmentioning

confidence: 99%

The Effect of Type 1 Atellocolagen in Association with Blood Self-derivatives in Alveolar Bone Augumentation

Alexandru¹,

Popa²,

Peștean³

et al. 2020

Rev. Chim.

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The current experimental study was conducted in sheep, which present bone anisotropy and a predisposition to periodontal disease, with alveolar bone resorption, similar to that found in humans. In this study, alveolar bone augmentation was performed using a lyophilized bovine bone xenograft enriched with type 1 atelocollagen, which was combined with autologous platelet-rich plasma (PRP) and advanced platelet-rich fibrin (A-PRF) as a membrane. The results were radiologically and histologically evaluated at six weeks postoperatively. At that time, the transformation of the composite biomaterial was clearly visible, suggesting that the regeneration process started from the periphery of the augmentation mass, which was progressively transformed from a granular eosinophilic material into an undifferentiated hypercellular one, then into fibroblastic, cartilaginous tissue, and finally into new bone and desmodontal-like tissue. This process was most probably induced by all the compounds used, the growth factors found in autologous blood derivatives, including bone morphogenetic proteins (BMPs), as well as type 1 atelocollagen from the graft composition, especially in combination. The composite biomaterial at six weeks postoperatively provided excellent results regarding alveolar bone regeneration, and without any risk, as opposed to that found in overdose of recombinant growth factors.

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Section: Resultsmentioning

confidence: 99%

The Effect of Type 1 Atellocolagen in Association with Blood Self-derivatives in Alveolar Bone Augumentation

Alexandru¹,

Popa²,

Peștean³

et al. 2020

Rev. Chim.

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“…Composite resins with a higher filler ratio absorb less water [24,29]. The mechanical and chemical properties of composite resins, including water absorption, are influenced by the type and degree of filler, the inorganic silane and the distribution of particles in the organic phase [30][31][32][33][34][35][36]. If in the condensation stage, before polymerization, air bubbles are incorporated into the organic matrix, causing the appearance of macro/micropores, water/saliva can be absorbed without changing the volume of the restoration [37].…”

Section: Resultsmentioning

confidence: 99%

In vitro Study on Water Absorption of Dental Restorative Materials

Todor,

Fluieras,

Bonta

et al. 2024

Mater. Plast.

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Among the properties of materials for direct coronal restorations, water absorption is particularly important, influencing the mechanical properties, color and adhesion of the restorations made.The aim of this study was to compare the water absorption of six dental restorative materials, two composite, two compomers and two glass ionomers. Water absorption was determined on disk samples. 30 discs were prepared, 5 of each studied material, with a diameter of 15 mm and a thickness of 1 mm. The water absorption test was carried out based on the ISO 4049 specification. The composites and compomers showed a water absorption within the standard limits (40 �g/mm3). Glass ionomers show high water absorption, therefore to be used as coronal restorative materials they need to be coated with a protective varnish.

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“…The properties of composites are influenced by type and extent of filler and inorganic silane and correct distribution of nanoparticles in the organic phase. In vitro studies are necessary to evaluate the biocompatibility of all dental materials [29][30][31].…”

Section: Figurementioning

confidence: 99%

Synthesis and Comparative Characterization of Different Microparticles used as Biomaterials in Dentistry

Tofan¹,

Olteanu²,

Szuhanek³

et al. 2021

Mater. Plast.

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A biomaterial must be biologically compatible, mechanical, functional, corrosion resistant and easily adapt to clinical and laboratory technologies. Dental biomaterials are materials used to replace a part of a living system or to work closely with living tissue. Many scientific articles present different polymeric biocomposites with possible application in dentistry and this is a proof of the opportunity of a research in a field in full ascent and with great availability in the promotion of materials destined to �work under biological constraint� and which must also meet the functional requirements of a dental implant. The objectives of this research were to obtain and to comparatively evaluate different polymeric microparticles that can be used in dentistry. The samples based on poly(lactic-co-glycolic acid) and respectively polyurethane microparticles were characterized by pH and Zetasizer measurements, and in vitro cytotoxicity assays. The results indicate the obtaining of particles with a neutral pH, medium homogeneity, and with different tendencies to form agglomerations. Their low cytotoxicity, tested on the primary human gingival fibroblasts by MTT and LDH techniques, indicates that these microparticles are safe to be tested in further clinical evaluations.

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In Vitro Study of the Structure and Adhesive Interface in Direct Restorations with Commercial Nanocomposite Materials

Cited by 3 publications

References 7 publications

The Effect of Type 1 Atellocolagen in Association with Blood Self-derivatives in Alveolar Bone Augumentation

The Effect of Type 1 Atellocolagen in Association with Blood Self-derivatives in Alveolar Bone Augumentation

In vitro Study on Water Absorption of Dental Restorative Materials

Synthesis and Comparative Characterization of Different Microparticles used as Biomaterials in Dentistry

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