A quantitative study of the absorbable porous block ?-tricalcium phosphate implanted in the defects of rabbit calvarium / 实用口腔医学杂志

ABSTRACT

砄bjectiveTo study the absorption of porous block ? tricalcium phosphate(? TCP) implanted in the defects of rabbit calvarium.Methods:Twenty four rabbits were randomly divided into four groups with six in each,a round piece of bone with the diameter of 8 mm was removed on left and right sides in the calvarium of each animal.? TCP samples were implanted in the left defects and hydroxyapatite(HA)in the right.Rabbits were sacrificed at 2,4,8,12 weeks after operation respectively,The implanted materials were quantitatively measured by "Point Counting".Results:Twelve weeks after operation,the amount of ? TCP and HA remained in the transplants were 34.54% and 49.28%,while the bone tissue comprised 24.43% and 19.67% of ? TCP and HA transplants respectively.Conclusion:Porous block ? TCP is more absorbable and more feasible for new bone tissue regeneration than HA.