How Accurate are Implant Surgical Guides Produced with Desktop Stereolithographic 3D-printers?

Publication date: Available online 5 August 2017
Source:Journal of Oral and Maxillofacial Surgery
Author(s): George R. Deeb, Riley K. Allen, V. Patrick Hall, Daniel Whitley, Daniel M. Laskin, Sompop Bencharit
IntroductionThe use of tooth-supported static stereolithographic guides has greatly improved the ability to ideally place implants. This study was designed to determine the accuracy of in office-printed implant surgical guides.Materials and MethodsUsing 3shape Implant Studio, a treatment plan for #8 implant placement was made using digital intraoral scan from a Trios scanner and cone-beam computed tomography (CBCT). Ten stereolithographic guides were printed using a Form2 3D printer. Pre- and post-implant insertion digital scans were used to determine distance and angulation differences in mesiodistal and faciolingual position of the implants compared to the planned position.ResultsThe mean difference in mesiodistal direction at the alveolar crest between planned implants and placed implants was 0.28 mm (range 0.05-0.62mm) and the difference in the faciolingual direction was 0 .49 mm (range 0.08-0.72mm). The mean mesiodistal angulation deviation was 0.84 degrees (range 0.08-4.48) and the mean faciolingual angulation deviation was 3.37 degrees (range 1.12-6.43).ConclusionsIn-office fabricated stereolithographic implant surgical guides demonstrate similar accuracy to laboratory or manufacturer prepared guides. This technique provides a convenient and cost-effective means of assuring proper implant placement.



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