scholarly journals Biocompatibility of calcium phosphate bone cement with optimised mechanical properties: an in vivo study

Author(s):  
Iwan Palmer ◽  
John Nelson ◽  
Wolfgang Schatton ◽  
Nicholas J. Dunne ◽  
Fraser Buchanan ◽  
...  
2017 ◽  
Vol 16 (1) ◽  
Author(s):  
Che Nor Zarida Che Seman ◽  
Zamzuri Zakaria ◽  
Zunariah Buyong ◽  
Mohd Shukrimi Awang ◽  
Ahmad Razali Md Ralib @ Md Raghib

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.


2020 ◽  
Vol 15 (5) ◽  
pp. 055038
Author(s):  
Sirirat T. Rattanachan ◽  
Nuan La-ong Srakaew ◽  
Paritat Thaitalay ◽  
Oranich Thongsri ◽  
Rawee Dangviriyakul ◽  
...  

2021 ◽  
pp. 088532822198998
Author(s):  
Karl Wu ◽  
Yu-Chun Chen ◽  
Shang M Lin ◽  
Chih-Hung Chang

This study aimed to evaluate the effectiveness of a novel calcitonin-loaded calcium phosphate composite bone cement in vitro and in vivo. The novel composite bone cements were composed of NuROs injectable bone graft substitute, type I collagen, and/or salmon calcitonin. The setting time, porosity, wettability, compressive strength, compressive modulus, and crystallographic structures of cement specimens were determined. Degradation rate, calcitonin release rate, and osteoinductivity were assessed in vitro. In addition, osteogenic effect was examined in a rabbit model of femoral defect. The results revealed that addition of collagen/calcitonin did not substantially alter physical properties and degradation rate of bone cement specimens. Calcitonin was released into culture medium in a two-phase manner. Osteogenic effect of conditioned medium derived from calcitonin containing bone cement was observed. Finally, de novo bone growth and bone mineralization across the bone defect area were observed in rabbits after implantation of composite bone cement specimens. In conclusion, this novel calcitonin-loaded composite calcium phosphate bone cement exhibits biocompatibility, bioresorbability, osteoinductivity, and osteoconductivity, which may be suitable for clinical use.


2007 ◽  
Vol 336-338 ◽  
pp. 1654-1657
Author(s):  
Rui Liu ◽  
Li Min Dong ◽  
Qing Feng Zan ◽  
Chen Wang ◽  
Jie Mo Tian

The aim of this work is to improve the mechanical properties of calcium phosphate bone cement (CPC) by appending chitosan microspheres to CPC base. That chitosan degrades rapidly than bone cement has been proved by previous investigations. Porous CPC has low compressive strength because of the pores in it weakening the structure. Additive chitosan microspheres can improve the mechanical properties by bearing the compress with the CPC base and produce pores after degradation. This study investigates the effect of chitosan microspheres on the setting time, mechanical properties, phase evolution and morphology of CPC. The additive proportion of chitosan microspheres ranges from 0 wt% to 30 wt%. Compared with original CPC, the modified CPC has higher compressive strength, without significantly affecting the chemical properties. The phase composition of the CPC is tested by XRD. The microstructures of CPC are observed using SEM. The final setting times range from 5~15 minutes and can be modulated by using different liquid and powder (L/P) ratio.


Author(s):  
National Research Mamonov ◽  
National Research Chemis ◽  
National Research Drize ◽  
National Research Proskurina ◽  
I. I. Kryazhkov ◽  
...  

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.


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 ◽  
...  

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.


Sign in / Sign up

Export Citation Format

Share Document