The effect of endodontic filling agents on the activity of the regeneration processes of bone tissue in the experiment

2018 ◽  
Vol 87 (1) ◽  
pp. 11-17
Author(s):  
Iryna Han ◽  
Khristina Musij-Sementsiv ◽  
Volodymyr Zubachyk
Keyword(s):  
Bone Tissue ◽  
Antioxidant System ◽  
Mineral Metabolism ◽  
Blood Clot ◽  
Malonic Dialdehyde ◽  
Endodontic Treatment ◽  
Bone Tissue Regeneration ◽  
White Rats ◽  
Apical Area ◽  
Regeneration Processes

Introduction. Highly important is to regenerate the inflammatory destructive processes of bone tissue outside the apical area of the tooth that would optimize reparative bone formation, mineralization of tooth tissues, restoration of periodontal function and stability of tooth to occlusive loads, especially with acquired extensive root apex. Low efficiency of endodontic treatment led to the searching of the new osteotropic drugs of osteoconductive action and biorevitalization to stimulate the repairing and regeneration of tissues outside the apical area and dense obturation of the apex of the tooth root.Aim. of our research was to determine the dynamics of reparative processes in the bone tissue under the influence of drugs and compositions for endodontic treatment based on an analysis of indicators of a mineral metabolism, marker enzymes and an activity of antioxidant system and lipid peroxidation.Material and Methods. An experiment was conducted on 120 white rats. It was created a bone defect, which was filled with studied biomaterials or left with a blood clot. From the experiment the rats were taken out on 14 and 90 day. In homogenates of bone tissue it was examined the activity of lysosomal enzymes — alkaline (ALP) and acid (AP) phosphatases and the content of microelements — calcium and phosphorus. In the blood of rats it was studied the concentration of general protein, lipid peroxidation products — malonic dialdehyde (MDA) and the enzyme activity of antioxidant system — catalase (CAT) and superoxide dismutase (SOD).Results and conclusions. Results of conducted experimental research of the effect of endodontic filling materials on the activity of the regeneration processes of bone tissue show that proposed compositions based on hydroxyapatite and beta-tricalcium phosphate, due to their osteoconductive and biorevitalization qualities, promote more active stimulation of bone tissue regeneration processes compared to generally accepted drugs.

scholarly journals Оцінка впливу остеотропних препаратів на активність процесів пероксидного окиснення ліпідів та антиоксидантної системи при регенерації кісткової тканини в експерименті

2018 ◽  
Author(s):  
V. M. Zubachyk ◽  
I. V. Han ◽  
O. O. Pasko
Keyword(s):  
Lipid Peroxidation ◽  
Bone Tissue ◽  
Antioxidant System ◽  
Tricalcium Phosphate ◽  
Antioxidant Properties ◽  
Malonic Dialdehyde ◽  
Endodontic Treatment ◽  
White Rats ◽  
Biochemical Studies ◽  
Regeneration Of Bone Tissue

Summary. The comparative estimation of the dynamics of the reparative process in bone tissue under the infl uence of MTA and Nano Gen preparations and the proposed compositions based on hydroxyapatite and β-tricalcium phosphate for endodontic treatment is given.The aim of the study – to determine the dynamics of reparative processes in bone tissue under the infl uence of drugs and compositions for endodontic treatment, which is based on the analysis of the results of biochemical studies of lipid peroxidation and antioxidant system.Materials and Methods. The experiment was conducted on 120 white rats, on which the defect of bone tissue was created and fi lled with the studied biomaterials. From the experiment the animals were excised at 14 and 30 days by decapitation under anesthesia and blood samples were taken for biochemical studies. In the blood of rats, the activity of peroxide oxidation processes of lipids – malonic dialdehyde and antioxidant system enzymes – catalase and superoxide dismutase were studied.Results and Discussion. In animal groups where hydroxyapatite and β-tricalcium phosphate based compositions were used, less activity was observed in lipoperoxidation than in animals using MTA and Nano Gen. The proposed compositions possess antioxidant properties that contribute to the reduction of the activity of the infl ammatory process. Compositions based on hydroxyapatite and β-tricalcium phosphate at earlier times restore the balance in the lipid peroxidation system and the antioxidant system, which creates more favorable conditions for biorevitalization and regeneration of non-apical tissues.Conclusions. The compositions based on hydroxyapatite and β-tricalcium phosphate possess antioxidant properties, suppress excessive lipoproxidation processes, contribute to the reduction of the activity of the infl ammatory process, which stimulates the regeneration of bone tissue.

scholarly journals Application of ultrasonic treatment and synthesized collagen hydrolyzate in the surgical treatment of experimental osteomyelitis

2017 ◽  
Vol 10 (2) ◽  
pp. 137-144
Author(s):  
Natalya Alexandrovna Malkina ◽  
Alexander Alekseevich Andreev ◽  
Anton Petrovich Ostroushko
Keyword(s):  
Bone Tissue ◽  
General Condition ◽  
Ultrasonic Treatment ◽  
Chronic Osteomyelitis ◽  
Mineral Metabolism ◽  
Free Radical Oxidation ◽  
Control Group ◽  
Complex Method ◽  
White Rats ◽  
Experimental Group

Chronic osteomyelitis is one of their complex health problems, since it accounts for up to 6% of cases in the structure of the pathology of the musculoskeletal system, relapses of the disease occur in 30%, and disability is 90% of cases.The aim of the study was to improve the results of treatment of experimental chronic osteomyelitis by applying ultrasound sanation and synthesized collagen hydrolyzate.Materials and methods. The study was carried out on 210 white rats, which were divided into 5 groups: 2 control rats and 3 experimental ones. In the 1st control group, no treatment was performed. In the 2nd control and experimental groups, the hearth was surgically sanitized. In the 1 st experimental group, the focus was performed by ultrasonic treatment. In the 2nd experimental group, the bone cavity was filled with a synthesized hydrolyzate of collagen. In the third experimental group, the combined use of ultrasound sanitation of the focus and filling it with synthesized collagen hydrolyzate was carried out. To assess the dynamics of treatment, the analysis of the general condition of animals, hematological and morphometric studies was performed.Results and their discussions.The dynamics of the general state of animals, the antioxidant defense system, the mineral metabolism, and the evaluation of the histoarchitectonics of bone tissue have been studied. It was noted that against the backdrop of the inflammatory process in chronic osteomyelitis, all the studied indicators indicate a reduced regenerative capacity. Using the developed treatment methods based on ultrasound sanitation, synthesized collagen hydrolyzate, as well as their combination, accelerated relief of inflammatory phenomena, normalization of AOS, mineral metabolism, and regenerative abilities of bone tissue were observed.Conclusions. The developed complex method of treatment based on combined application of ultrasound sanation and synthesized collagen hydrolyzate allowed to shorten the healing period of the wound defect, normalize the general condition of animals, free radical oxidation and mineral metabolism parameters, and accelerate the regenerative capabilities of bone tissue.

Lactoferrin in Bone Tissue Regeneration

2020 ◽  
Vol 27 (6) ◽  
pp. 838-853 ◽  
Author(s):  
Madalina Icriverzi ◽  
Valentina Dinca ◽  
Magdalena Moisei ◽  
Robert W. Evans ◽  
Mihaela Trif ◽  
...  
Keyword(s):  
Bone Tissue ◽  
Tissue Regeneration ◽  
Bone Cells ◽  
Bone Diseases ◽  
Biologically Active Compounds ◽  
Biologically Active ◽  
Bone Tissue Regeneration ◽  
Bone Homeostasis ◽  
Active Compounds

: Among the multiple properties exhibited by lactoferrin (Lf), its involvement in bone regeneration processes is of great interest at the present time. A series of in vitro and in vivo studies have revealed the ability of Lf to promote survival, proliferation and differentiation of osteoblast cells and to inhibit bone resorption mediated by osteoclasts. Although the mechanism underlying the action of Lf in bone cells is still not fully elucidated, it has been shown that its mode of action leading to the survival of osteoblasts is complemented by its mitogenic effect. Activation of several signalling pathways and gene expression, in an LRPdependent or independent manner, has been identified. Unlike the effects on osteoblasts, the action on osteoclasts is different, with Lf leading to a total arrest of osteoclastogenesis. : Due to the positive effect of Lf on osteoblasts, the potential use of Lf alone or in combination with different biologically active compounds in bone tissue regeneration and the treatment of bone diseases is of great interest. Since the bioavailability of Lf in vivo is poor, a nanotechnology- based strategy to improve the biological properties of Lf was developed. The investigated formulations include incorporation of Lf into collagen membranes, gelatin hydrogel, liposomes, loading onto nanofibers, porous microspheres, or coating onto silica/titan based implants. Lf has also been coupled with other biologically active compounds such as biomimetic hydroxyapatite, in order to improve the efficacy of biomaterials used in the regulation of bone homeostasis. : This review aims to provide an up-to-date review of research on the involvement of Lf in bone growth and healing and on its use as a potential therapeutic factor in bone tissue regeneration.

Bone tissue engineering in the greater omentum with computer-aided design/computer-aided manufacturing scaffolds is enhanced by a periosteum transplant

2020 ◽  
Author(s):  
Hendrik Naujokat ◽  
Klaas Loger ◽  
Juliane Schulz ◽  
Yahya Açil ◽  
Jörg Wiltfang
Keyword(s):  
Bone Formation ◽  
Bone Tissue ◽  
Computer Aided Design ◽  
Bone Tissue Regeneration ◽  
Histological Evaluation ◽  
Greater Omentum ◽  
Collagen Membrane ◽  
Computer Aided ◽  
3D Printed ◽  
The Impact

Aim: This study aimed to evaluate two different vascularized bone flap scaffolds and the impact of two barrier membranes for the reconstruction of critical-size bone defects. Materials & methods: 3D-printed scaffolds of biodegradable calcium phosphate and bioinert titanium were loaded with rhBMP-2 bone marrow aspirate, wrapped by a collagen membrane or a periosteum transplant and implanted into the greater omentum of miniature pigs. Results: Histological evaluation demonstrated significant bone formation within the first 8 weeks in both scaffolds. The periosteum transplant led to enhanced bone formation and a homogenous distribution in the scaffolds. The omentum tissue grew out a robust vascular supply. Conclusion: Endocultivation using 3D-printed scaffolds in the greater omentum is a very promising approach in defect-specific bone tissue regeneration.

scholarly journals 3D-Bioprinting Strategies Based on In Situ Bone-Healing Mechanism for Vascularized Bone Tissue Engineering

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 287
Author(s):  
Ye Lin Park ◽  
Kiwon Park ◽  
Jae Min Cha
Keyword(s):  
Tissue Engineering ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Bone Healing ◽  
Critical Size ◽  
Current Knowledge ◽  
3D Bioprinting ◽  
The Past ◽  
Regeneration Processes

Over the past decades, a number of bone tissue engineering (BTE) approaches have been developed to address substantial challenges in the management of critical size bone defects. Although the majority of BTE strategies developed in the laboratory have been limited due to lack of clinical relevance in translation, primary prerequisites for the construction of vascularized functional bone grafts have gained confidence owing to the accumulated knowledge of the osteogenic, osteoinductive, and osteoconductive properties of mesenchymal stem cells and bone-relevant biomaterials that reflect bone-healing mechanisms. In this review, we summarize the current knowledge of bone-healing mechanisms focusing on the details that should be embodied in the development of vascularized BTE, and discuss promising strategies based on 3D-bioprinting technologies that efficiently coalesce the abovementioned main features in bone-healing systems, which comprehensively interact during the bone regeneration processes.

Bifunctional hydrogel for potential vascularized bone tissue regeneration

2021 ◽  
pp. 112075
Author(s):  
Bipin Gaihre ◽  
Xifeng Liu ◽  
Linli Li ◽  
A. Lee Miller ◽  
Emily T. Camilleri ◽  
...  
Keyword(s):  
Bone Tissue ◽  
Tissue Regeneration ◽  
Bone Tissue Regeneration ◽  
Vascularized Bone

scholarly journals Dual Network Composites of Poly(vinyl alcohol)-Calcium Metaphosphate/Alginate with Osteogenic Ions for Bone Tissue Engineering in Oral and Maxillofacial Surgery

2021 ◽  
Vol 8 (8) ◽  
pp. 107
Author(s):  
Lilis Iskandar ◽  
Lucy DiSilvio ◽  
Jonathan Acheson ◽  
Sanjukta Deb
Keyword(s):  
Tissue Engineering ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Vinyl Alcohol ◽  
Maxillofacial Surgery ◽  
Bone Defects ◽  
Bone Tissue Regeneration ◽  
Poly Vinyl Alcohol ◽  
Oral And Maxillofacial Surgery

Despite considerable advances in biomaterials-based bone tissue engineering technologies, autografts remain the gold standard for rehabilitating critical-sized bone defects in the oral and maxillofacial (OMF) region. A majority of advanced synthetic bone substitutes (SBS’s) have not transcended the pre-clinical stage due to inferior clinical performance and translational barriers, which include low scalability, high cost, regulatory restrictions, limited advanced facilities and human resources. The aim of this study is to develop clinically viable alternatives to address the challenges of bone tissue regeneration in the OMF region by developing ‘dual network composites’ (DNC’s) of calcium metaphosphate (CMP)—poly(vinyl alcohol) (PVA)/alginate with osteogenic ions: calcium, zinc and strontium. To fabricate DNC’s, single network composites of PVA/CMP with 10% (w/v) gelatine particles as porogen were developed using two freeze–thawing cycles and subsequently interpenetrated by guluronate-dominant sodium alginate and chelated with calcium, zinc or strontium ions. Physicochemical, compressive, water uptake, thermal, morphological and in vitro biological properties of DNC’s were characterised. The results demonstrated elastic 3D porous scaffolds resembling a ‘spongy bone’ with fluid absorbing capacity, easily sculptable to fit anatomically complex bone defects, biocompatible and osteoconductive in vitro, thus yielding potentially clinically viable for SBS alternatives in OMF surgery.

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