Enhanced bone apposition to Brazilian microrough titanium surfaces

Area of Science:

• Biomaterials Science
• Dental Implantology
• Orthopedic Research

Background:

• Machined and microrough (micro) Brazilian titanium (Ti) implants meet high production standards.
• Understanding in vivo bone formation around different implant surfaces is crucial for dental and orthopedic applications.

Purpose of the Study:

• To evaluate and compare in vivo bone formation around two distinct titanium implant surfaces: machined and microrough.
• To assess the histomorphometric parameters of bone healing at early time points after implantation in a canine model.

Main Methods:

• Thirty-two screw-type titanium implants (2 machined, 2 micro) were placed in the mandible of 8 dogs after premolar extraction.
• Biopsies were collected at 3 and 8 weeks post-implantation for histomorphometric analysis.
• Measurements included bone-to-implant contact (BIC), bone area between threads (BABT), and bone area within the mirror area (BAMA), analyzed using two-way ANOVA.

Main Results:

• At 3 weeks, microrough implants showed significantly higher bone-to-implant contact (BIC) than machined implants (55% vs. 35.6%, p<0.05).
• No significant difference in BIC was observed between the two surfaces at 8 weeks (51.2% vs. 48.6%, p>0.05).
• No significant differences were found in bone area between threads (BABT) or bone area within the mirror area (BAMA) between implant types.

Conclusions:

• Microrough titanium implant surfaces promote enhanced early osteogenesis (contact osteogenesis) compared to machined surfaces.
• This enhanced early bone formation suggests potential benefits of micro-surfaced implants for faster osseointegration in the initial healing phase.