TY - JOUR
T1 - Bone remodeling in onlay beta-tricalcium phosphate and coral grafts to rat calvaria
T2 - Microcomputerized tomography analysis
AU - Anavi, Yakir
AU - Avishai, Gal
AU - Calderon, Shlomo
AU - Allon, Dror M.
PY - 2011/8
Y1 - 2011/8
N2 - This study was conducted to establish the efficiency of microcomputerized tomography (micro-CT) in detection of trabecular bone remodeling of onlay grafts in a rodent calvaria model, and to compare bone remodeling after onlay grafts with beta-tricalcium phosphate (TCP) or coral calcium carbonate. Ten rats received calvarial onlay blocks-5 with TCP and 5 with coral calcium carbonate. The grafts were fixed with a titanium miniplate screw and were covered with a collagen resorbable membrane. Three months after surgery, the calvaria were segmented, and a serial 3-dimensional micro-CT scan of the calvarium and grafted bone block at 16-micrometer resolution was performed. Image analysis software was used to calculate the percentage of newly formed bone from the total block size. Newly formed bone was present adjacent to the calvarium and screw in all specimens. The mean area of newly formed bone of the total block size ranged from 34.67%-38.34% in the TCP blocks, and from 32.41%-34.72% in the coral blocks. In the TCP blocks, bone remodeling was found to be slightly higher than in the coral blocks. Micro-CT appears to be a precise, reproducible, specimen-nondestructive method of analysis of bone formation in onlay block grafts to rat calvaria.
AB - This study was conducted to establish the efficiency of microcomputerized tomography (micro-CT) in detection of trabecular bone remodeling of onlay grafts in a rodent calvaria model, and to compare bone remodeling after onlay grafts with beta-tricalcium phosphate (TCP) or coral calcium carbonate. Ten rats received calvarial onlay blocks-5 with TCP and 5 with coral calcium carbonate. The grafts were fixed with a titanium miniplate screw and were covered with a collagen resorbable membrane. Three months after surgery, the calvaria were segmented, and a serial 3-dimensional micro-CT scan of the calvarium and grafted bone block at 16-micrometer resolution was performed. Image analysis software was used to calculate the percentage of newly formed bone from the total block size. Newly formed bone was present adjacent to the calvarium and screw in all specimens. The mean area of newly formed bone of the total block size ranged from 34.67%-38.34% in the TCP blocks, and from 32.41%-34.72% in the coral blocks. In the TCP blocks, bone remodeling was found to be slightly higher than in the coral blocks. Micro-CT appears to be a precise, reproducible, specimen-nondestructive method of analysis of bone formation in onlay block grafts to rat calvaria.
KW - Beta-tricalcium phosphate
KW - Bone graft
KW - Bone remodeling
KW - Coral calcium carbonate
KW - Micro-CT
KW - Rat calvaria
UR - http://www.scopus.com/inward/record.url?scp=80051917717&partnerID=8YFLogxK
U2 - 10.1563/AAID-JOI-D-09-00128.1
DO - 10.1563/AAID-JOI-D-09-00128.1
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AN - SCOPUS:80051917717
SN - 0160-6972
VL - 37
SP - 379
EP - 386
JO - Journal of Oral Implantology
JF - Journal of Oral Implantology
IS - 4
ER -