Precision and trueness of implant placement with and without static surgical guides: An in vitro study

AbstractStatement of problem Malpositioning implants is one the main factors leading to hard- and soft-tissue deficiencies. Whether static computer-guided implant placement increases accuracy prevents malpositioning unclear. Purpose The purpose this in vitro study was determine defined by trueness precision (according International Organization for Standardization 5725) computer-assisted surgery (fully guided partially guided) comparison with freehand single placement. Material methods Implants (n=20) were placed fully (sleeve-bone distance 2, 4, or 6 mm), (guide used pilot drill), free hand identical replicas produced from a cone beam computed tomography (CBCT) scan edentulous patient. achieved position digitized using laboratory scanner compared planned position. Trueness (planned versus actual position) (difference among implants) determined. 3D-offset at crest (root mean square between virtual preoperative planning postoperative standard tessellation language file) as primary outcome parameter. means, deviation, 95% confidence intervals analyzed statistically 1-way ANOVA Scheffé procedure. Results Fully significantly lower 3D deviations 0.22 ±0.07 mm (2-mm sleeve-bone distance) than 0.69 ±0.15 0.80 ±0.35 (P<.001). each group again lowest highest group. Conclusions showed high precision. closer sleeve bone, more accurate precise method. Freehand less (partially fully).