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Implant Dent. 2013 Aug;22(4):380-7. doi: 10.1097/ID.0b013e31829afa44.

Characteristics of newly formed bone in sockets augmented with cancellous porous bovine bone and a resorbable membrane: microcomputed tomography, histologic, and resonance frequence analysis.

Author information

1
Department of Oral and Maxillofacial Surgery, University Hospital Infanta Cristina, Badajoz, Spain. laurivillanueva@hotmail.com

Abstract

AIM:

Microcomputed tomography (micro-CT) has become a highly accurate and nonintrusive method for analysis of bone. This study aims to determine the microstructural characteristics of the bone formed in grafted extraction sockets.

METHODS:

This prospective study comprised 10 patients. Cancellous porous bovine bone (CPBB) was used for socket grafting. Ten bone samples were harvested from implant site 9 months after grafting, before implant placement, and histologic and microstructural characteristics were analyzed. Cone-beam computed tomography scans were performed, and implant stability was also determined.

RESULTS:

Four men and 6 women, with a mean age of 44 years, were included in the study. Micro-CT revealed a compact structure with high bone volume fraction, trabecular thickness and number, but a low trabecular separation and pattern factor, which made it an optimal structure that is expected to resist occlusal loads. Histologic examination revealed an abundant amount of CPBB particles (27.5%) and new bone formation (23.3%) 40.6 months after bone grafting surgery. Moreover, mean implant stability quotient was 75.7 units.

CONCLUSION:

This investigation demonstrated marked de novo bone formation after a healing period of 9 months. This trabecular bone had a compact structure with abundant thick trabeculae.

PMID:
23839270
DOI:
10.1097/ID.0b013e31829afa44
[Indexed for MEDLINE]
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