Does the Osseodensification Technique Allow for the use of a Healing Chamber with Primary Stability in Low-Density Bone? An in Vivo Study

Abstract

This study aimed to investigate in vivo the hypothesis that the osseodensification technique, through a wider osteotomy, produce healing chambers at the implant-bone interface with no impact on primary stability osseointegration in low-density bone. Twenty implants (3.5 x 10 mm) presenting nanohydroxyapatite (nHA) surface were inserted in the ilium of ten sheep, after preparation of a 2.7-mm wide implant bed with conventional subtractive drilling (SCD) or a 3.8-mm wide implant bed with an osseodensification bur system (OBS) (n = 5/group/period). The final insertion torque (IT) and implant stability quotient (ISQ) evaluated the primary implant stability. After 14 and 28 days, the bone samples containing the implants were processed for histological and histomorphometric evaluation of bone implant contact (BIC) and bone area fraction occupancy (BAFO). No significant differences occurred between the implant bed preparations regarding IT and ISQ (P > 0.05). Histological analysis showed bone remodeling, and bone growth in all samples with no inflammatory infiltrate. BIC values were higher for SCD after 14 and 28 days (p < 0.05), however BAFO values were similar on both groups (p > 0.05). It was possible to conclude that the osseodensification technique allowed a wider implant bed preparation with no prejudice on primary stability and bone remodeling.

Doping Engineering of Piezo‐Sonocatalytic Nanocoating Confer Dental Implants with Enhanced Antibacterial Performances and Osteogenic Activity

“…Custom-made implant screws, simulating dental implants, were implanted into the alveolar bone in front of the maxillary first molar of the rats (Figures 6A and S12, Supporting Information). After approximately 4 weeks, the newly formed bone around the implants became visible, [45] and decalcified sections of bone tissue around the implant threads were evaluated. The area of interest is the cancellous bone surrounding the implant.…”