Changes of stability and peri-implant bone formation of double-micro- threaded implants with respect to drilling techniques

Materials and Methods: Mandibular 2nd, 3rd, and 4th premolars were extracted bilaterally in 12 mongrel dogs. After one month healing, total 60 double-microthreaded implants were installed using 6 different drilling techniques and divided into 6 groups depending on the techniques used. One, two, three, and four weeks later the animals were sacrificed. Insertion torque value (ITV) was measured at the time of implant installation, and implant stability quotient (ISQ) was measured at the time of installation and animal sacrifice. Implant installation sites were prepared for histomorphometric analysis. Bone area (BA) and bone to implant contact (BIC) ratio were evaluated.