scholarly journals Cytotoxicity, Biocompatibility and Biomineralization of a New Ready-for-Use Bioceramic Repair Material

2019 ◽  
Vol 30 (4) ◽  
pp. 325-332 ◽  
Author(s):  
Francine Benetti ◽  
Índia Olinta de Azevedo Queiroz ◽  
Leopoldo Cosme-Silva ◽  
Leticia Citelli Conti ◽  
Sandra Helena Penha de Oliveira ◽  
...  
Keyword(s):  
Subcutaneous Tissue ◽  
Polarized Light ◽  
Mineral Trioxide Aggregate ◽  
New Mineral ◽  
High Plasticity ◽  
Repair Material ◽  
Liquid Form ◽  
Hematoxylin Eosin ◽  
Empty Control

Abstract New mineral trioxide aggregate (MTA) formulations are constantly introduced in the market, usually in a powder-and-liquid form. Bioceramic (Bio-C) Repair is a ready-for-use material suggested as substitute for MTA, but its properties need to be studied. This study evaluated the cytotoxicity, biocompatibility and biomineralization of Bio-C Repair compared to MTA Repair High-Plasticity (MTA-HP) and white MTA-Angelus (MTA-Ang). L929 fibroblasts were exposed to material-extracted (undiluted, ½ and ¼ dilutions; 6, 24 and 48h). Polyethylene tubes with material or empty (control) were implanted in the subcutaneous tissue of rats. After 7 and 30 days (n=8), the specimens were removed for analysis (hematoxylin-eosin, von Kossa and polarized light). Cytotoxicity data were statistically analyzed by two-way ANOVA, and biocompatibility data by Kruskal-Wallis and Dunn tests (p<0.05). The cells exposed to the materials had greater viability at most of the periods compared with control (p<0.05). The undiluted and ½ dilutions of MTA-HP extract showed higher cytocompatibility than Bio-C Repair at 6 h and with the ¼ dilution at 24 h (p<0.05); the white MTA-Ang showed higher cytocompatibility than Bio-C Repair at most of periods (p<0.05). The undiluted white MTA-Ang extract had higher cytocompatibility at 6 and 24h than MTA-HP, and with ½ dilution at 24h (p<0.05). The materials’ cytocompatibility was similar at 48h for most dilutions (p>0.05). At 7 and 30 days, the groups had moderate and mild inflammation, respectively (p>0.05). All materials showed positive structures for von Kossa and polarized light. In conclusion, Bio-C Repair had similar cytocompatibility to MTA-based materials is biocompatible and induces biomineralization.

scholarly journals Rat subcutaneous tissue response to modified Portland Cement, a new mineral trioxide aggregate

2009 ◽  
Vol 20 (2) ◽  
pp. 112-117 ◽  
Author(s):  
Ricardo Martínez Lalis ◽  
María Laura Esaín ◽  
Gabriel A. Kokubu ◽  
Julia Willis ◽  
Carolina Chaves ◽  
...  
Keyword(s):  
Foreign Body ◽  
Portland Cement ◽  
Inflammatory Infiltrate ◽  
Subcutaneous Tissue ◽  
Mineral Trioxide Aggregate ◽  
Giant Cells ◽  
Tissue Response ◽  
New Mineral ◽  
Tissue Samples ◽  
Foreign Body Giant Cells

The purpose of this study was compare the biocompatibility of modified Portland cement (CPM) and mineral trioxide aggregate (MTA) in a subcutaneous rat model. Twenty-four male Wistar rats were used. Three silicon tubes were placed on the dorsal subcutaneous tissue of each animal: one tube contained MTA, one tube contained CPM and the other was an empty tube. The rats were sacrificed in 3 groups of 8 animals at 7, 14 and 30 postoperative days, respectively. Tissue samples were fixed in 10% buffered formalin, embedded in paraffin, and serial sections were cut and stained with hematoxylin and eosin, Masson Trichrome and Luna's stain. At day 7, the empty tubes displayed a mild inflammatory infiltrate. In the CPM group, an inflammatory infiltrate was observed with some eosinophils and immature connective tissue. The MTA group showed a similar infiltrate without eosinophils and presence of abundant necrotic tissue and numerous multinucleate foreign body giant cells. At day 14, the chronic infiltrate with eosinophils persisted when in contact with CPM. In the MTA group, necrosis and distant giant cells could still be seen. At day 30, all 3 groups showed mature fibrous collagenous tissue. These findings indicate a different response to the materials evaluated in this study. Although, MTA and CPM induced a chronic inflammatory infiltrate, necrosis and multinucleated foreign body giant cells predominated in the MTA group, while in the CPM group numerous eosinophils were seen at all the observational periods.

scholarly journals Biocompatibility and biomineralization of the experimental nanoparticulate mineral trioxide aggregate (MTA)

2021 ◽  
Vol 10 (5) ◽  
pp. e27710514866
Author(s):  
Renan Dal-Fabbro ◽  
Leopoldo Cosme-Silva ◽  
India Olinta de Azevedo Queiroz ◽  
Paulo Carvalho Tobias Duarte ◽  
Letícia Cabrera Capalbo ◽  
...  
Keyword(s):  
Polarized Light ◽  
Mineral Trioxide Aggregate ◽  
Inflammatory Cells ◽  
Tissue Response ◽  
Median Score ◽  
Mineralized Tissue ◽  
Score System ◽  
Significant Difference ◽  
Subcutaneous Tissues ◽  
Hematoxylin Eosin

To investigate the tissue response and the biomineralization ability of the experimental nanoparticulate mineral trioxide aggregate compared to grey MTA and Fillapex MTA. Polyethylene tubes containing materials or empty tubes for control were inserted into the subcutaneous tissues of 30 rats. After 7, 15, 30, 60, and 90 days, the rats were killed and the tubes were removed for analysis using hematoxylin-eosin staining, von Kossa staining, and under polarized light. Inflammation was graded through a score system; the biomineralization ability was recorded as present or absent. The results were statistically analyzed using the Kruskal-Wallis test (p<0.05). On days 7 and 15 there was a significant difference between the Nano MTA (median score of 3) and MTA Fillapex groups (median score of 4), being MTA Fillapex the material with the highest number of inflammatory cells. At 30, 60, and 90 days there was no difference between the Nano MTA, Grey MTA, and MTA Fillapex groups. All materials induced the formation of mineralized tissue in all experimental periods. Nano MTA showed biocompatibility and biomineralization similar to grey MTA Angelus.

Dalnegroite, Tl5–xPb2x(As,Sb)2l–xS34, a new thallium sulphosalt from Lengenbach quarry, Binntal, Switzerland

2009 ◽  
Vol 73 (6) ◽  
pp. 1027-1032 ◽  
Author(s):  
F. Nestola ◽  
A. Guastoni ◽  
L. Bindi ◽  
L. Secco
Keyword(s):  
Polarized Light ◽  
New Mineral ◽  
X Ray Diffraction ◽  
X Ray ◽  
Elemental Concentrations ◽  
Reflected Light ◽  
Mohs Hardness ◽  
The Mean ◽  
The University ◽  
Probable Space

AbstractDalnegroite, ideally Tl4Pb2(As12Sb8)Σ20S34, is a new mineral from Lengenbach, Binntal, Switzerland. It occurs as anhedral to subhedral grains up to 200 μm across, closely associated with realgar, pyrite, Sb-rich seligmanite in a gangue of dolomite. Dalnegroite is opaque with a submetallic lustre and shows a brownish-red streak. It is brittle; the Vickers hardness (VHN25) is 87 kg mm-2(range: 69—101) (Mohs hardness ∼3—3½). In reflected light, dalnegroite is highly bireflectant and weakly pleochroic, from white to a slightly greenish-grey. In cross-polarized light, it is highly anisotropic with bluish to green rotation tints and red internal reflections.According to chemical and X-ray diffraction data, dalnegroite appears to be isotypic with chabournéite, Tl5-xPb2x(Sb,As)21-xS34. It is triclinic, probable space groupP1, witha= 16.217(7) Å,b= 42.544(9) Å,c= 8.557(4) Å, α = 95.72(4)°, β = 90.25(4)°, γ = 96.78(4)°,V= 5832(4) Å3,Z= 4.The nine strongest powder-diffraction lines [d(Å) (I/I0) (hkl)] are: 3.927 (100) (10 0); 3.775 (45) (22); 3.685 (45) (60); 3.620 (50) (440); 3.124 (50) (2); 2.929 (60) (42); 2.850 (70) (42); 2.579 (45) (02); 2.097 (60) (024). The mean of 11 electron microprobe analyses gave elemental concentrations as follows: Pb 10.09(1) wt.%, Tl 20.36(1), Sb 23.95(1), As 21.33(8), S 26.16(8), totalling 101.95 wt.%, corresponding to Tl4.15Pb2.03(As11.86Sb8.20)S34. The new mineral is named for Alberto Dal Negro, Professor in Mineralogy and Crystallography at the University of Padova since 1976.

Comparison of the Osteogenic Potential of Mineral Trioxide Aggregate and Endosequence Root Repair Material in a 3-dimensional Culture System

2016 ◽  
Vol 42 (5) ◽  
pp. 760-765 ◽  
Author(s):  
Hisham S. Rifaey ◽  
Max Villa ◽  
Qiang Zhu ◽  
Yu-Hsiung Wang ◽  
Kamran Safavi ◽  
...  
Keyword(s):  
Culture System ◽  
Mineral Trioxide Aggregate ◽  
Osteogenic Potential ◽  
Repair Material ◽  
3 Dimensional ◽  
Root Repair

scholarly journals Physical and Biological Properties of a High-Plasticity Tricalcium Silicate Cement

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Arthur Dias Galarça ◽  
Wellington Luiz de Oliveira Da Rosa ◽  
Tiago Machado Da Silva ◽  
Giana da Silveira Lima ◽  
Neftalí Lenin Villarreal Carreño ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Film Thickness ◽  
Cell Viability ◽  
Water Solubility ◽  
Setting Time ◽  
Mineral Trioxide Aggregate ◽  
Biological Properties ◽  
High Plasticity ◽  
Silicate Matrix ◽  
Time Flow

Introduction. Mineral Trioxide Aggregate (MTA) is a tricalcium-based silicate, dicalcium silicate matrix. Despite its good biologic properties, some clinicians still claim to have difficulties in handling MTA after its preparation due to its sandy consistency. The aim of the present study was to evaluate the physicochemical properties and cytotoxicity of MTA Repair HP (Angelus, Londrina, PR, Brazil) compared with MTA Angelus (Angelus, Londrina, PR, Brazil). Materials and Method. The properties assessed were particle size, setting time, flow, film thickness, radiopacity, water solubility, compressive strength, and cytotoxicity. Statistical analysis was performed considering p < 0.05 as statistically significant. Results. For radiopacity, water absorption and solubility MTA Repair HP were statistically similar to MTA Angelus. The MTA Angelus had statistically different film thickness values, higher than MTA Repair HP (p < 0.05). Besides, MTA Angelus showed a lower and statistically different compressive strength after 28 days than MTA Repair HP (p<0.05). Additionally, MTA Repair HP set more slowly (p < 0.05). Relative to cell viability, MTA Repair HP was statistically similar to MTA Angelus after 24 and 48 h in cell viability. Conclusions. The MTA Repair HP presented similar cell viability, lower film thickness, higher flow, setting time, and compressive strength values after 28 days than MTA Angelus. In general, the MTA Repair HP presented physicochemical and biological properties similar to the MTA Angelus.

Antifungal Activity of Endosequence Root Repair Material and Mineral Trioxide Aggregate

2014 ◽  
Vol 40 (11) ◽  
pp. 1815-1819 ◽  
Author(s):  
Fahd Alsalleeh ◽  
Nicole Chung ◽  
Lane Stephenson
Keyword(s):  
Antifungal Activity ◽  
Mineral Trioxide Aggregate ◽  
Repair Material ◽  
Root Repair
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