Dynamic navigation for dental implant placement in single-tooth gaps: A preclinical pilot investigation

Objectives: To compare the planned (PIP) and transferred implant position (TIP) after dental implant placement in single-tooth gaps utilizing dynamic computer-assisted implant surgery (dCAIS). Methods: Five pairs of artificial jaws (n = 5) with four single tooth gaps in FDI (Fe'de'ration Dentaire Inter-nationale) regions 16, 25, 36 and 44 were manufactured via injection molding technique. Cone beam computed tomographies (CBCTs) were made and digital implant planning of twenty implants (n = 20) was performed with a dynamic navigation system (DNS, Navident, ClaroNav, Toronto, Canada). After guided drilling and manual implant placement, post-operative CBCTs were made. Global deviations at entry point (two-dimensional, 2D), apex (three-dimensional, 3D), apex (vertical, V) and angulation (in degrees, ) were calculated by DNS software. For statistical analysis, level of significance was set top < 0.05. Results: Mean deviation at the implants entry point (2D) was 0.78 & PLUSMN; 0.45 mm (range: 0.10-1.63 mm). For the implants apex (3D) and the implants apex (V) deviations were 1.08 +/- 0.50 mm (range: 0.33-2.10 mm) and 0.32 +/- 0.22 mm (range: 0.02-0.90 mm), respectively. The median angular deviation () was 2.81 +/- 2.29 (range: 0.56-9.58). Statistically significant differences (p < 0.05) were found regarding apex (3D), apex (V), and angulation (') comparing I.-IV. quadrants. Conclusions: Using the investigated dCAIS seems to provide satisfactory results regarding TIP in single-tooth gaps in vitro. Due to documented deviations, a safety distance of more than 2 mm should be respected while implant planning in DNS software. Clinical significance: The investigated DNS seems to be reliant in transferring PIP with acceptable deviations in vitro.