highly significantP < 0.01
A detailed description of the study sample including the total number of used implants with their lengths is presented in Table 1 . The findings of postoperative CBCT scans showed underestimation in 138 sites (93.2%); there was a highly significant difference between overestimation (10 sites; 6.8%) and underestimated readings ( P < 0.01; Table 2 ).