Comparison of the Accuracy of Implant Position Using Surgical Guides Fabricated by Additive and Subtractive Techniques

Journal of Prosthodontics : Official Journal of the American College of Prosthodontists
Pantip HenprasertJulie A Holloway

Abstract

To evaluate the accuracy of implant position using surgical guides fabricated by additive and subtractive techniques. A partially edentulous standardized mandibular implant model with different bone densities and soft tissue was duplicated and a diagnostic wax-up was performed for the #30 area. A reference radiographic guide was fabricated and cone beam computed tomography (CBCT) was made with the reference radiographic guide in place. A surgical guide was designed using BlueSky Plan 4 software and a reference implant was placed in the #30 region. The STL file of the surgical guide was exported and specimens (n = 15) were fabricated by two different techniques: additive (3D printing) and subtractive (milling). The standardized mandibular model was surface-scanned and duplicated with printed dental model resin (n = 30). Each surgical guide was used to place an implant in thirty duplicate printed models. Differences in implant position as compared to the reference were measured from digital scans with scan bodies in place. The angular deviations, differences in depth, coronal and apical deviations were measured using GeoMagic Control X software. Results were analyzed by Wilcoxon-Mann-Whitney test and PERMANOVA (Permutational Mult...Continue Reading

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Citations

Jan 28, 2021·Journal of Clinical Medicine·Rani D'haeseStefan Vandeweghe
Feb 5, 2021·Expert Review of Medical Devices·Yen-Wei ChenKanako J Nagatomo
Mar 16, 2021·The Journal of Prosthetic Dentistry·Wenceslao Piedra-CascónMarta Revilla-León
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Apr 27, 2021·International Journal of Implant Dentistry·Sigmar SchnutenhausHeike Rudolph
Apr 28, 2021·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Roberto PessoaGustavo Mendonça

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