Propriétés mécaniques des membranes de collagène

Coïc, M.; Placet, Vincent; Jacquet, Emmanuelle; Meyer, C.

doi:10.1016/j.stomax.2010.10.006

Cited by 33 publications

(24 citation statements)

References 4 publications

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“…6-D), which could be justified by the plasticizing effect of PBS [78]. Moreover, the ultimate tensile stress and the Young's modulus decreased in wet conditions comparing to the dry ones, which are in accordance with some findings already reported about the mechanical resistance of some polymeric and composite membranes [82,83] and also regarding the mechanical behavior of commercial resorbable membranes for periodontal regeneration [82,84,85]. In the wet state, formulations containing Ag-BGs (F3 and F4) presented higher Young's modulus values, but for the ultimate strain (ε B ) they presented lower values than the control ones.…”

Section: Resultssupporting

confidence: 89%

“…Moreover, in agreement with previous findings reported by other LbL works [60,86], all formulations were stiffer than the uncrosslinked ones. Regarding the mechanical performance of the films in wet state, since tensile strength values between 1.6 and 22.5 MPa and Young's Modulus between 10 and 70.9 MPa [84,85,87] have been reported with biodegradable membranes for guided bone regeneration, it can be seen that the developed films presented values with the same order of magnitude of the ones typically used in the clinics for the envisaged applications.…”

Section: Resultsmentioning

confidence: 80%

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Antibacterial free-standing polysaccharide composite films inspired by the sea

Vale

Pereira

Barbosa

et al. 2019

International Journal of Biological Macromolecules

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The adhesive capabilities of marine mussel proteins are well-known, exhibiting the ability to stick to different underwater substrates, either inorganic or organic. These unique adhesive properties are due to the high levels of amino acid, 3,4-dihydroxyphenyl-L-alanine (DOPA), which presents the reactive catechol group. Herein, novel antibacterial free-standing (FS) films were developed with natural polymers, namely chitosan (CHT) and hyaluronic acid (HA), being the catechol-functionalized hyaluronic acid (HA-DN) also included to provide wet adhesive properties. In order to obtain composite films, silver doped bioglass nanoparticles (Ag-BGs) were incorporated to promote bactericidal and bioactive properties, being tested four distinct formulations of FS films. Their surface morphology and topography, wettability, weight loss, swelling, mechanical, adhesion and bioactivity was analyzed. In particular, bioactivity tests revealed that upon immersion in simulated body fluid, there was the formation of a bone-like apatite layer. Moreover, upon 16 h in direct contact with Staphylococcus aureus and Escherichia coli cultures, these FS films exhibited a clear antibacterial effect. Therefore, such bioactive, antibacterial and adhesive free-standing films could potentially be used as temporary guided bone regeneration films, in particular to regenerate small bone defects and also periodontal tissues.

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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 80%

Antibacterial free-standing polysaccharide composite films inspired by the sea

Vale

Pereira

Barbosa

et al. 2019

International Journal of Biological Macromolecules

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show abstract

“…According to the manufacturer's instructions for use, the membranes should be placed in saline before placement in situ. However, Coïc et al [28], found that extensive moistening considerably alters the mechanical properties of the membranes, an observation that is in accordance with the present results. In contrast, this does not happen to the Ossix Plus crossed-linked membrane, which has a fragile response to the application of tensile forces in either the dry or wet condition.…”

Section: Discussionsupporting

confidence: 93%

Tensile Properties of Three Selected Collagen Membranes

Raz

Brosh

Ronen

et al. 2019

BioMed Research International

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Background Biological barriers are commonly used to treat alveolar bone defects and guide tissue regeneration. Understanding the biological and mechanical properties of the available membranes is crucial for selecting the one that is optimal for enhancing clinical outcomes. Purpose To evaluate the mechanical behavior of three different collagen membranes to increasing tensile force in dry and wet conditions. Materials and Methods Three commercially collagen membranes were selected for analysis: Bio-Gide® (Geistlich Biomaterials, Baden-Baden, Germany), Remaix™ (RX; Matricel GmbH, Herzogenrath, Germany), and Ossix Plus® (Datum Dental Biotech, Lod, Israel). Increasing tensile forces were applied on 10 dry and wet membranes of standard size via a loading machine. Force and extension values were acquired up to maximum load before failure, and maximum stress, maximum extension, and amount of energy needed for membrane tearing were analyzed. Membranes' densities were also calculated. Results The Remaix membrane exhibited the highest values of maximum load tensile strength, maximum extension, and maximum energy required for membrane tearing, followed by Bio-Gide. Ossix Plus had the lowest scores in all these parameters. Dry membranes had the highest scores for all parameters except extension. Membrane density was directly and significantly correlated with all tested parameters. Conclusions The study was undertaken to provide clinicians with data upon which to base the selection of collagen membranes in order to achieve optimal clinical results. It emerged that the mechanical properties of dry and wet collagen membranes were significantly different from one another. Among the 3 tested membranes, Remaix exhibited higher performance results in all the mechanical tests. Collagen membrane density seems to have a significant influence upon mechanical resistance. These findings may also guide manufacturers in improving the quality of their product.

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“…The tensile test is an easy way to compare different materials, however it is not the most common mechanical stress to which membranes for periodontal regeneration are usually subjected. Material failure under tensile load is quite difficult in the guided bone regeneration/guided tissue regeneration GBR/GTR application [47,48]. Failure of this type of materials is much more probably provoked by tearing during placement.…”

Section: Resultsmentioning

confidence: 99%

Improvement of the Physical Properties of Guided Bone Regeneration Membrane from Porcine Pericardium by Polyphenols-Rich Pomace Extract

Russo

Cassinelli²,

Torre³

et al. 2019

Materials

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To achieve optimal performances, guided bone regeneration membranes should have several properties, in particular, proper stiffness and tear resistance for space maintenance, appropriate resorption time, and non-cytotoxic effect. In this work, polyphenol-rich pomace extract (PRPE), from a selected grape variety (Nebbiolo), rich in proanthocyanidins and flavonols (e.g., quercetin), was used as a rich source of polyphenols, natural collagen crosslinkers, to improve the physical properties of the porcine pericardium membrane. The incorporation of polyphenols in the collagen network of the membrane was clearly identified by infra-red spectroscopy through the presence of a specific peak between 1360–1380 cm−1. Polyphenols incorporated into the pericardium membrane bind to collagen with high affinity and reduce enzymatic degradation by 20% compared to the native pericardium. The release study shows a release of active molecules from the membrane, suggesting a possible use in patients affected by periodontitis, considering the role of polyphenols in the control of this pathology. Mechanical stiffness is increased making the membrane easier to handle. Young’s modulus of pericardium treated with PRPE was three-fold higher than the one measured on native pericardium. Tear and suture retention strength measurement suggest favorable properties in the light of clinical practice requirements.

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Propriétés mécaniques des membranes de collagène

Cited by 33 publications

References 4 publications

Antibacterial free-standing polysaccharide composite films inspired by the sea

Antibacterial free-standing polysaccharide composite films inspired by the sea

Tensile Properties of Three Selected Collagen Membranes

Improvement of the Physical Properties of Guided Bone Regeneration Membrane from Porcine Pericardium by Polyphenols-Rich Pomace Extract

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