Dipsacus asperoides combined with composite calcium phosphate bone implant for bone defect repair

doi:10.3969/j.issn.2095-4344.2013.38.009

Abstract

Abstract:

BACKGROUND: Physical structure and inorganic composition of composite calcium phosphate bone implants are similar to human bone, and the implants have good bioabsorbable ability and biocompatibility. Studies have confirmed that Dipsacus powder can significantly improve the speed of bone defect repair.
OBJECTIVE: To study the effects of Dipsacus asperoides/composite calsium phosphate bone implant material in the repair of bone defects.
METHODS: Bone defects of 1.0 cm×0.5 cm×0.3 cm were made on the bilateral mandibular bodies. The right side was implanted with Dipsacus asperoides/ composite calsium phosphate bone implant as experimental group and the left side implanted with calcium phosphate bone material served as control group. Samples were collected at 4, 8, 12 weeks after implantation for gross observation, cone beam CT, scanning electron microscope observation and histological observation.
RESULTS AND CONCLUSION: (1) Gross observation: the osteogenic speed, degradation rate and hardness in the experimental group were higher than those in the control group. (2) Cone beam CT detection: the implant in the experimental group was more tightly integrated with the surrounding tissues than that in the control group, and the degradation speed in the experimental group was higher than that in the control group. (3) Scanning electron microscope observation: there were many fibrous connective tissues between the implants and the surrounding tissues in the two groups, which was more obvious in the experimental group than the control group. With time gone, the implants were combined with the surrounding tissues more tightly. (4) Histological observation: the osteogenic speed and activity in the experimental group were superior to those in the control group. These findings indicate that Dipsacus asperoides combined with composite calcium phosphate bone implant can accelerate bone repair.

Key words: biocompatible materials, calcium phosphates, drugs, Chinese herbal, mandible

CLC Number:

R318

Li Shan-chang, Ren Yuan-yuan. Dipsacus asperoides combined with composite calcium phosphate bone implant for bone defect repair[J]. Chinese Journal of Tissue Engineering Research, doi: 10.3969/j.issn.2095-4344.2013.38.009.

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