Microscopic analysis of reconstructed maxillary alveolar ridges using autogenous bone grafts from the chin and iliac crest.
OBJECTIVE
The aim of this study was to histologically analyze the bone repair of maxillary areas reconstructed with autogenous bone grafts using 2 different donor sites, the ilium and the chin.


METHODS
Specimens were retrieved with trephine burs positioned transversely in augmented ridges 4 months after placement of the grafts. To analyze bone conditions, a histomorphometric study of ground sections was performed using a special template to identify 3 specific regions of the specimens: cortical bone, cancellous bone, and the region of transition between the alveolar ridge and the graft. Ten patients, 5 men and 5 women, with a mean age of 47 years (range 28 to 67) were evaluated.


RESULTS
Results indicated good incorporation of the grafts in this period, demonstrated by intense osteogenesis indicating an active remodeling process.


CONCLUSIONS
In both groups, the improvement in bone quality of the receptor site was evident, independent of the size of the reconstruction, although chin grafts presented better bone quality.


CONCLUSIONS
From this study it was possible to conclude that a period of 4 months is sufficient for the placement of osseointegrated implants in reconstructed areas, where chin or iliac autogenous grafts have been used.
Department of Oral and Maxillofacial Surgery, Universidade do Sagrado Coração, Bauru, São Paulo, Brazil.
Mariza Akemi
MA
Matsumoto
Hugo Nary
HN
Filho
arlos Eduardo
aE
Francischone
Alberto
A
Consolaro
D000328:Adult; D000368:Aged; D000539:Alveolar Process / Q000033:anatomy & histology; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D000704:Analysis of Variance; D001861:Bone Regeneration; D016025:Bone Transplantation / Q000379:methods*; D002680:Chin / Q000601:surgery; D005260:Female; D006801:Humans; D007085:Ilium / Q000601:surgery; D008297:Male; D008437:Maxilla / Q000601:surgery*; D008875:Middle Aged; D018709:Statistics, Nonparametric; D020858:Tissue and Organ Harvesting