Histomorphometric comparison of BIO-OSS vs. Osteodens in maxilar elevation procedures

Abstract

The loss of dental elements can lead to excessive bone loss in the maxillary posterior maxillary segments, which can limit the placement of dental implants in said area. Of the wide range of grafting materials available, one of the most exhaustively studied and with the best clinical and histological results is bovine hydroxyapatite. Hypothesis: The use of Osteodens would lead to the formation of bone suitable for implant placement after a healing period of 6 to 8 months in maxillary sinus floor elevation procedures using the lateral window technique in a similar way. could be expected with Bio-Oss.

The objective of this investigation was to measure regenerated viable bone tissue histomorphologically in maxillary sinus augmentation procedures after a period of 6 to 8 months of healing using as bovine hydroxyapatite graft material from 2 different brands (Osteodens and Bio-Oss), and to assess the capacity of Osteodens as a graft material apt to be used efficiently in maxillary sinus lift procedures.

A total of 17 maxillary sinus augmentations were performed (n = 8 Osteodens, n = 9 Bio-Oss), after a healing period of 6 to 8 months a block was taken from the grafted area by means of the use of trephines and analyzed by histomorphometry.

Percentages of neoformed bone tissue was higher for Bio-Oss (39.0% + 11.1) compared to Osteodens (33.4% + 8.3) the remaining graft values ​​were somewhat lower in Bio-Oss with respect to Osteodens (16.3% + 11.2 and 20.8% + 12.1 respectively). The proportion of connective tissue was similar in the two groups (44.7% Bio-Oss and 45.8% Osteodens). With respect to the analyzed variables age, gender and residual height of the sinus floor, the results showed no statistically significant differences. 

Within the limitations of this study it can be concluded that both materials used (Bio-Oss and Osteodens) as graft material in maxillary sinus lift procedures did not show statistically significant differences in the ability to regenerate bone tissue suitable for placement of implants after 6 months of healing. Other studies with greater number of samples should be carried out to validate these results.