Results Surface fraction of woven bone at the implant inter-face was statistically significantly higher in the PTH group by
1.4 fold with (median (interquartile range) 15% (13–18)) in the
PTH group and 11% (7–13) in control. The fraction of lamellar
bone was unaltered. No significant difference in bone or fibrous
tissue was observed in the circumferential regions of 0–500, 500–
1,000, and 1,000–2,000 μm around the implant. Mechanically, the
implants treated with PTH showed no significant differences in
total energy absorption, maximum shear stiffness, or maximum
shear strength