Figure 2. Static histomorphometric data. Bone-implant contact from the microradiograph analysis in the healing control at 3 (N = 6), 6 (N = 7). and 12 (N = 6) wks and force applied at 3 (N = 6), 6 (N = 6), and 12 (N = 6) wks in the maxilla (a). Bone-implant contact in the healing control at 3 (N = 7), 6 (N = 7), and 12 (N = 6) wks and force applied at 3 (N = 8), 6 (N = 6), and 12 (N = 6) wks in the mandible (b). In the maxillary implants, the HC rate at 3 wks is much higher than those in other groups. WV/TV rates from the microradiograph analysis in the healing control at 3 (N = 8), 6 (N = 7), and 12 (N = 6) wks and force applied at 3 (N = 7), 6 (N = 6), and 12 (N = 6) wks in the maxilla (c). WV/TV rates in the healing control at 3 (N = 7), 6 (N = 8), and 12 (N = 6) wks and force applied at 3 (N = 7), 6 (N = 6), and 12 (N= 8) wks in the mandible (d). In both jaws, about half of the total bone volume shows woven bone formation in the three-week HC. BV/TV rates from the bright-field microscopic analysis in the healing control at 3 (N = 6), 6 (N = 7), and 12 (N = 6) wks and force applied at 3 (N = 8), 6 (N = 6), and 12 (N = 6) wks in the maxilla (e). BV/TV rates in the healing control at 3 (N = 7), 6 (N = 8), and 12 (N = 8) wks and force applied at 3 (N = 6), 6 (N = 6), and 12 (N= 7) wks in the mandible (f). The 12-week group shows a significantly lower rate in the HC and a significantly higher rate in the FA compared with other groups. *Significantly higher than in the six- and 12-week groups (p < 0.05); **significantly higher than in the 12-week groups (p < 0.05); ***significantly lower than in the three- and six-week groups (p < 0.05); HC = healing control group; FA = force-applied group.