scholarly journals Early Results of the Study of Reparative Peculiarities of Various Osteoplastic Materials in Experimental Bone Defects

2017 ◽  
Vol 24 (2) ◽  
pp. 40-47
Author(s):  
K. A Egiazaryan ◽  
G. D Lazishvili ◽  
K. I Akmataliev ◽  
A. P Ettinger ◽  
A. P Rat’ev ◽  
...  
Keyword(s):  
Bone Cement ◽  
Bone Tissue ◽  
Tricalcium Phosphate ◽  
Calcium Sulphate ◽  
Bone Defects ◽  
Spongy Bone ◽  
Early Results ◽  
Calcium Phosphate Bone Cement ◽  
Bone Trabeculae ◽  
Osteoplastic Material

Purpose. To determine the optimum osteoplastic material for activation of reparative osteogenesis and substitution of traumatic defects in metaepiphyseal spongy bone tissue. Material and methods. Comparative experimental morphological study was performed on 12 matured male Chinchilla rabbits with body weight 2500-2800g. A model of critical defects of spongy bone tissue was used. Bone defects were filled with 3 types of osteoplastic material: composite calcium sulphate bone cement; xenogenous hydroxyapatite-based material with granulated paste of synthetic peptides (P-15); β-tricalcium phosphate-based material with gauging liquid (calcium phosphate bone cement). Results. Implantation of calcium sulphate bone cement showed rapid osteogenesis stimulation at terms 1.5 months and reduction of newly formed bone tissue mass by 3rd month due to active resorption of the residual material. Implantation of hydroxyapatite-based material with P-15 resulted in osteogenesis stimulation on its surface however because of its mechanical instability and absence of active resorption of that material only a moderate formation of bone trabeculae was observed. At implantation of β-tricalcium phosphate-based material an active resorption of osteoplastic material, formation of trabecular system and its reorganization into trabecular network of femoral metaepiphyseal spongy bone accompanied by the formation of mature bone trabeculae was noted by month 3. Conclusion. Mechanical stability of osteoplastic material and subsequent gradual resorption as well as formation of mature bine trabeculae indicates the efficacy of β-tricalcium phosphate-based material.

scholarly journals Early Results of the Study of Reparative Peculiarities of Various Osteoplastic Materials in Experimental Bone Defects

2017 ◽  
pp. 40-47
Author(s):  
K. A. Egiazaryan ◽  
G. D. Lazishvili ◽  
K. I. Akmataliev ◽  
A. P. Ettinger ◽  
A. P. Rat’Ev ◽  
...  
Keyword(s):  
Bone Cement ◽  
Bone Tissue ◽  
Tricalcium Phosphate ◽  
Calcium Sulphate ◽  
Bone Defects ◽  
Spongy Bone ◽  
Early Results ◽  
Calcium Phosphate Bone Cement ◽  
Bone Trabeculae ◽  
Osteoplastic Material

Purpose. To determine the optimum osteoplastic material for activation of reparative osteogenesis and substitution of traumatic defects in metaepiphyseal spongy bone tissue.Material and methods.Comparative experimental morphological study was performed on 12 matured male Chinchilla rabbits with body weight 2500-2800g. A model of critical defects of spongy bone tissue was used. Bone defects were filled with 3 types of osteoplastic material: composite calcium sulphate bone cement; xenogenous hydroxyapatite-based material with granulated paste of synthetic peptides (P-15); β-tricalcium phosphate-based material with gauging liquid (calcium phosphate bone cement).Results.Implantation of calcium sulphate bone cement showed rapid osteogenesis stimulation at terms 1.5 months and reduction of newly formed bone tissue mass by 3rd month due to active resorption of the residual material. Implantation of hydroxyapatite-based material with P-15 resulted in osteogenesis stimulation on its surface however because of its mechanical instability and absence of active resorption of that material only a moderate formation of bone trabeculae was observed. At implantation of β-tricalcium phosphate-based material an active resorption of osteoplastic material, formation of trabecular system and its reorganization into trabecular network of femoral metaepiphyseal spongy bone accompanied by the formation of mature bone trabeculae was noted by month 3.Conclusion. Mechanical stability of osteoplastic material and subsequent gradual resorption as well as formation of mature bine trabeculae indicates the efficacy of β-tricalcium phosphate-based material.

scholarly journals Effect of implants of hydroxyapatite with tricalcium phosphates alloyed with Si on histomorphological and biochemical parameters in cases of bone defects of rabbits

2021 ◽  
Vol 12 (2) ◽  
pp. 281-288
Author(s):  
V. O. Chemerovskiy ◽  
M. V. Rublenko ◽  
S. V. Rublenko ◽  
N. V. Ulanchych ◽  
S. O. Firstov ◽  
...  
Keyword(s):  
General Anesthesia ◽  
Bone Tissue ◽  
Tricalcium Phosphate ◽  
Biochemical Parameters ◽  
Bone Defects ◽  
Control Group ◽  
Tartrate Resistant Acid Phosphatase ◽  
Spongy Bone ◽  
Diaphyseal Bone ◽  
Bone Trabeculae

Complex comminuted fractures are accompanied by development of bone defects and loss of reparative potential of the bone tissue in the region of the trauma. This brings the necessity of using implants with optimum osteoconductive and osteointegration properties. The objective of the study was determining the condition of biochemical bone markers and peculiarities of histomorphological changes under the influence of ceramic hydroxyapatite (HA) implants with various physical-chemical properties in the conditions of diaphyseal bone defects in rabbits. We composed control and experimental groups of rabbits with 10 individuals in each with diaphyseal bone defects (3 mm) of the radial bones formed under general anesthesia. In one experimental group, they were filled with granules of hydroxyapatite with α-tricalcium phosphate, and in the second group – with β-tricalcium phosphate, alloyed with Si. In the control rabbits, the defects healed under a blood clot. Blood was analyzed on the 3rd, 7th, 14th, 21st and 42nd days, and as reference we used biochemical parameters of blood of clinically healthy rabbits (n = 10). Bone biopsied materials were taken on days 21–42 under general anesthesia. When using hydroxyapatite with β-tricalcium phosphate, alloyed with Si, we determined early intensification of the levels of nitrogen oxide, angiogenesis and development of bone regenerate in conditions of shortening of inflammatory resorption phase, which was verified according to the level of tartrate-resistant acid phosphatase. According to the level of bone isoenzyme of alkaline phosphatase in the blood serum of animals of the control group, the reparative osteogenesis developed slowly and peaked on day 42, whereas in animals implanted with α-tricalcium phosphate, its development peaked peaked on days 14–42, and when using Si-alloy – on days 7–14. Histomorphologically, on the 21st day, in the case of replacement of bone defect with hydroxyapatite with α-tricalcium phosphate, coarse-fibered type of bone regenerate developed with no dense contact with the elements of the regenerate, while spongy bone trabeculae occurred when hydroxyapatite was applied with β-tricalcium phosphate alloyed with Si, and the control rabbits were observed to be in the stage of cartilaginous callus. On the 42nd day, under the influence of implants of hydroxyapatite with α-tricalcium phosphate, the spongy bone tissue transformed into compact tissue with further mineralization. With implants alloyed with Si, there occurred compact bone tissue, and bone regenerates of the control animals were regions of coarse-fibered and spongy bone tissue without dense contact with the parent bone. This study revealed that hydroxyapatite with β-tricalcium phosphate alloyed with Si had notable osteoinductive and osteointegrating properties, as indicated by early angiogenesis and osteoblast reaction, positive dynamics of the marker biochemical parameters with faster and better development of bone regenerate as spongy bone trabeculae.

scholarly journals Preliminary in Vivo Evaluation of Bone Healing in Critical Size Bone Defects Implanted with an Injectable Calcium Phosphate Bone Cement (Osteopaste)

2017 ◽  
Vol 16 (1) ◽  
Author(s):  
Che Nor Zarida Che Seman ◽  
Zamzuri Zakaria ◽  
Zunariah Buyong ◽  
Mohd Shukrimi Awang ◽  
Ahmad Razali Md Ralib @ Md Raghib
Keyword(s):  
Calcium Phosphate ◽  
Bone Cement ◽  
Bone Tissue ◽  
Bone Repair ◽  
Critical Size ◽  
Healing Process ◽  
Bone Defects ◽  
Calcium Phosphate Bone Cement ◽  
Rabbit Tibia

Introduction: A novel injectable calcium phosphate bone cement (osteopaste) has been developed. Its potential application in orthopaedics as a filler of bone defects has been studied. The biomaterial was composed of tetra-calcium phosphate (TTCP) and tricalcium phosphate (TCP) powder. The aim of the present study was to evaluate the healing process of osteopaste in rabbit tibia. Materials and method: The implantation procedure was carried out on thirty-nine of New Zealand white rabbits. The in vivo bone formation was investigated by either implanting the Osteopaste, Jectos or MIIG – X3 into a critical size defect (CSD) model in the proximal tibial metaphysis. CSD without treatment served as negative control. After 1 day, 6 and 12 weeks, the rabbits were euthanized, the bone were harvested and subjected for analysis. Results: Radiological images and histological sections revealed integration of implants with bone tissue with no signs of graft rejection. There was direct contact between osteopaste material and host bone. The new bone was seen bridging the defect. Conclusion: The result showed that Osteopaste could be a new promising biomaterial for bone repair and has a potential in bone tissue engineering.

scholarly journals In Vivo Study of Tricomponent Resorbable Calcium Phosphate Bone Cement Based on Tricalcium Phosphate

2014 ◽  
pp. 72-77
Author(s):  
National Research Mamonov ◽  
National Research Chemis ◽  
National Research Drize ◽  
National Research Proskurina ◽  
I. I. Kryazhkov ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Bone Cement ◽  
Tricalcium Phosphate ◽  
Bone Defects ◽  
Morphologic Study ◽  
Hemostatic Effect ◽  
Calcium Phosphate Bone Cement ◽  
Intertrabecular Space ◽  
Peripheral Bone

Results of experimental morphologic study of tricomponent resorbable calcium phosphate bone cement (CPhC), based on tricalcium phosphate for the filling of defect as a temporary bearing resorbable matrix are presented. Study was performed on soviet chinchilla rabbits weighting 3200-3500 g. The model of critical spongy bone defect was used. At different observation terms (6, 9 and 12 months) gradual substitution of biomaterial with newly formed bone tissue from periphery to the center was observed with complete cement resorption 12 months after surgery. By mechanic characteristics newly formed bone in the defect was stronger than the surrounding trabecular one. It was stated that material possessed hemostatic effect and moderate toxicity. Peripheral bone marrow maintained its cellularity at all terms, gradually filling intertrabecular space of newly formed bone. Achieved data enable to recommend wide used of CPhC for bone defects substitution.

scholarly journals In Vivo Study of Tricomponent Resorbable Calcium Phosphate Bone Cement Based on Tricalcium Phosphate

2014 ◽  
Vol 21 (1) ◽  
pp. 72-77
Author(s):  
National Research Center for Hematology, Moscow, RF Mamonov ◽  
National Research Center for Hematology, Moscow, RF Chemis ◽  
National Research Center for Hematology, Moscow, RF Drize ◽  
National Research Center for Hematology, Moscow, RF Proskurina ◽  
I. I Kryazhkov ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Bone Cement ◽  
Tricalcium Phosphate ◽  
Bone Defects ◽  
Morphologic Study ◽  
Hemostatic Effect ◽  
Calcium Phosphate Bone Cement ◽  
Intertrabecular Space ◽  
Peripheral Bone

Results of experimental morphologic study of tricomponent resorbable calcium phosphate bone cement (CPhC), based on tricalcium phosphate for the filling of defect as a temporary bearing resorbable matrix are presented. Study was performed on soviet chinchilla rabbits weighting 3200-3500 g. The model of critical spongy bone defect was used. At different observation terms (6, 9 and 12 months) gradual substitution of biomaterial with newly formed bone tissue from periphery to the center was observed with complete cement resorption 12 months after surgery. By mechanic characteristics newly formed bone in the defect was stronger than the surrounding trabecular one. It was stated that material possessed hemostatic effect and moderate toxicity. Peripheral bone marrow maintained its cellularity at all terms, gradually filling intertrabecular space of newly formed bone. Achieved data enable to recommend wide used of CPhC for bone defects substitution.

Reconstruction of Cranial Bone Defects Using a Compound of Bone Marrow Stromal Cells and Hydroxyapatite-Tricalcium Phosphate

2008 ◽  
Vol 368-372 ◽  
pp. 1235-1237 ◽  
Author(s):  
Lei Liu ◽  
Run Liang Chen ◽  
Yun Feng Lin ◽  
Wei Dong Tian ◽  
Sheng Wei Li
Keyword(s):  
Electron Microscopy ◽  
Tissue Engineering ◽  
Bone Marrow ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Stromal Cells ◽  
Tricalcium Phosphate ◽  
Bone Marrow Stromal Cells ◽  
Bone Defects ◽  
Marrow Stromal Cells

Hydroxyapatite-tricalcium phosphate (HA-TCP) is a new kind of material which shows good biocompatibility, biological degradability, and porosity. This study aimed to determine the effectiveness of HA-TCP as a bone tissue engineering scaffold. In this study, critical size cranial defects were reconstructed with compounds of autogenous bone marrow stromal cells (BMSCs) and HA-TCP. The resulting grafts were examined by X-ray, histological examination, semi-quantitative analysis of osteogenesis, immunochemical examination (collagen type I and III), scanning electron microscopy and transmission electron microscopy. The results showed that HA-TCP is a good bone tissue engineering scaffold and BMSCs/HA-TCP is a promising technique for reconstruction of bone defects.

Osteogenic biphasic calcium sulphate dihydrate/iron-modified α-tricalcium phosphate bone cement for spinal applications: In vivo study

2010 ◽  
Vol 6 (2) ◽  
pp. 607-616 ◽  
Author(s):  
M.D. Vlad ◽  
E.V. Şindilar ◽  
M.L. Mariñoso ◽  
I. Poeată ◽  
R. Torres ◽  
...  
Keyword(s):  
Bone Cement ◽  
Tricalcium Phosphate ◽  
Calcium Sulphate ◽  
In Vivo Study

Improving osteogenesis of calcium phosphate bone cement by incorporating with manganese doped β-tricalcium phosphate

2020 ◽  
Vol 109 ◽  
pp. 110481 ◽  
Author(s):  
Tingting Wu ◽  
Haishan Shi ◽  
Yongyi Liang ◽  
Teliang Lu ◽  
Zefeng Lin ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Bone Cement ◽  
Tricalcium Phosphate ◽  
Calcium Phosphate Bone Cement

scholarly journals Materials based o tricalcium phosphate as bone defects substitute (literature review)

2021 ◽  
pp. 100-107
Author(s):  
Mykola Korzh ◽  
Volodymyr Filipenko ◽  
Karolina Poplavska ◽  
Nataliya Ashukina
Keyword(s):  
Bone Tissue ◽  
Tricalcium Phosphate ◽  
Calcium Phosphates ◽  
Scientific Information ◽  
Slight Modification ◽  
Ceramic Materials ◽  
Bone Defects ◽  
Biological Properties ◽  
Filling Material ◽  
The Creation

The objective of the study is to determine the current tendencies in the use of osteoplastic materials based on tricalcium phosphate (TCP) in orthopedics and traumatology. Methods. The search of the scientific information for the analysis was carried out in the PubMed, Google Scholar, World Digital Library, ScienceDirect. Results. The development of biomaterials for reconstructive surgery on the skeleton remains an urgent issue of biomaterial engineering, biology and current traumatology and orthopedics. Calcium-phosphate ceramics have the excellent properties of biocompatibility, affinity with bone tissue, biodegradability as well as perfect osteoconductive and osteointegrative properties. They are used in orthopaedics and traumatology as a coating for endoprosthesis components in order to achieve a strong bond with the bone as well as a filling material for bone defects in the form of blocks, granules or powder. The optimal structure of ceramic materials in order to achieve the necessary hardness and control of the dissolution rate is still undetermined. The interest of researchers in the creation of osteoplastic materials containing TCP is explained by the advanced osteoinductive properties and the ability to quickly degrade with the formation of bone tissue. Due to different configurations and sizes of the bone defects, the creation of a material with osteoinductive and osteoconductive properties that could be inserted into the cavity in a liquid state and which would quickly harden and acquire the properties similar to those of the bone has been of great current interest. The material should be biodegradable while having sufficient time for bone formation at the implantation site. In view of the above, the creation of cements based on calcium phosphates has become more attractive. Unfortunately, this material is limited in use due to its brittleness and insufficient hardness. Certain reinforcing additives are expected to significantly improve the mechanical properties of the cement. It is desirable that these particles should have bioactive properties analogous to those of cement. A slight modification of the material can significantly change its properties, which makes it imperative to investigate experimentally the biological properties of the investigated material.

scholarly journals In Vitro Evaluation of Calcium Phosphate Bone Cement Composite Hydrogel Beads of Cross-Linked Gelatin-Alginate with Gentamicin-Impregnated Porous Scaffold

2021 ◽  
Vol 14 (10) ◽  
pp. 1000
Author(s):  
Shih-Ming Liu ◽  
Wen-Cheng Chen ◽  
Chia-Ling Ko ◽  
Hsu-Ting Chang ◽  
Ya-Shun Chen ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Antibacterial Activity ◽  
Calcium Phosphate ◽  
Bone Cement ◽  
Bone Defects ◽  
Composite Hydrogel ◽  
Hydrogel Beads ◽  
Hydrogel Composite ◽  
Calcium Phosphate Bone Cement ◽  
Hydrogel Composites

Calcium phosphate bone cement (CPC) is in the form of a paste, and its special advantage is that it can repair small and complex bone defects. In the case of open wounds, tissue debridement is necessary before tissue repair and the subsequent control of wound infection; therefore, CPC composite hydrogel beads containing antibiotics provide an excellent option to fill bone defects and deliver antibiotics locally for a long period. In this study, CPC was composited with the millimeter-sized spherical beads of cross-linked gelatin–alginate hydrogels at the different ratios of 0 (control), 12.5, 25, and 50 vol.%. The hydrogel was impregnated with gentamicin and characterized before compositing with CPC. The physicochemical properties, gentamicin release, antibacterial activity, biocompatibility, and mineralization of the CPC/hydrogel composites were characterized. The compressive strength of the CPC/hydrogel composites gradually decreased as the hydrogel content increased, and the compressive strength of composites containing gentamicin had the largest decrease. The working time and setting time of each group can be adjusted to 8 and 16 min, respectively, using a hardening solution to make the composite suitable for clinical use. The release of gentamicin before the hydrogel beads was composited with CPC varied greatly with immersion time. However, a stable controlled release effect was obtained in the CPC/gentamicin-impregnated hydrogel composite. The 50 vol.% hydrogel/CPC composite had the best antibacterial effect and no cytotoxicity but had reduced cell mineralization. Therefore, the optimal hydrogel beads content can be 25 vol.% to obtain a CPC/gentamicin-impregnated hydrogel composite with adequate strength, antibacterial activity, and bio-reactivity. This CPC/hydrogel containing gentamicin is expected to be used in clinical surgery in the future to accelerate bone regeneration and prevent prosthesis infection after surgery.

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