Bone Healing Around Implants with Different Surface: Histological Dog Study

Evaluate bone-implant contact (BIC) and bone area fraction occupancy (BAFO) around two types of implants with different surface properties: double etching (Osseotite®) and double etching after blasting aluminum oxide (BoneLike®).

Method:

For histological evaluation, twelve implants with double etching treatment and twelve implants with double etching after blasting aluminum oxide treatment, were inserted in four Beagle dogs. Each animal received 6 mediate implants (installed after period of healing socket) - 3 on each side of mandible in region of 2°, 3° and 4° premolars. One side received late load and the other, immediate loading. The choice of implants position and mandible side that received immediate load were randomized. Animals were sacrificed 60 days after receiving load on the implants and samples were fixed in formaldehyde (10%, 48h), dehydrated in sequential alcohol baths and included in histological resin (TecnoVit 7200). Histological slides were prepared in a microscopy system for hard tissue (Exackt System), stained with toluidine blue and acid fuchsin and analyzed on a brightfield microscope. The amount of BIC and BAFO were determined with aid of the Axion Vision 4.8.3 software and statistically analyzed (Kruskal-Wallis, p< 0,05).

Result:

No significant statistical differences in BIC and BAFO were observed between the groups, neither when different surfaces were compared nor when period load was considered. 

Conclusion:

The present study showed that implants with surface treated with double etching and double etching after blasting aluminum oxide, induced a similar bone response with use of immediate or late loading, after 60 days of healing in the mandible of dogs.