Abstract
The present study aims to compare the accuracy of metal sleeve-free 3D-printed computer-assisted implant surgical guides (MSF group) (n = 10) with metal sleeve-incorporated 3D-printed computer-assisted implant surgical guides (MSI group) (n = 10). Implants of diameter 4.0 mm and 5.0 mm were placed in the left second premolars and bilateral first molars, respectively, using a fully guided system. Closed-form sleeves were used in teeth on the left and open-form sleeves on the right. The weight differences of the surgical guides before and after implant placement, and angular deviations before and after implant placement were measured. Weight differences were compared with Student’s t-tests and angular deviations with Mann–Whitney tests. Cross-sectional views of the insert parts were observed with a scanning electron microscope. Preoperative and postoperative weight differences between the two groups were not statistically significant (p = 0.821). In terms of angular deviations, those along the mesiodistal direction for the left second premolars were significantly lower in the MSF group (p = 0.006). However, those along the mesiodistal direction for the bilateral molars and those along the buccolingual direction for all teeth were not significantly different (p > 0.05). 3D-printed implant surgical guides without metal sleeve inserts enable accurate implant placement without exhausting the guide holes, rendering them feasible for fully guided implant placement.
Highlights
Driven implant placement has long been considered fundamental for the long-term success of dental implants [1,2]
The emergence of cone-beam computed tomography (CBCT) scanning and the development of dental implant planning software have significantly contributed to achieving this goal [3,4]
Additive manufacturing or 3D printing is commonly used in dentistry, with its most extensive application being the fabrication of computer-assisted surgical stents or guides [5,6]
Summary
Driven implant placement has long been considered fundamental for the long-term success of dental implants [1,2]. It was not until the 1990s that this protocol was clinically implemented. Several comparative in vitro and in vivo studies evaluating the accuracy of surgical stents and guides have been performed. These studies reported that the mean angular deviation of dental implants placed with the aid of surgical stents and surgical guides ranged from 4.65◦ to 7.79◦ and 2.30◦ to 4.16◦ , respectively, indicating the superior accuracy of fully guided implant placement system [9,11,12,13]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
