Factors Affecting the Accuracy of Surgical Guide

Forfattere

  • Israa Hasan Ismael Dental student, College of Dentistry, University of Mosul, Mosul, Iraq.
  • Radhwan Himmadi Hasan

DOI:

https://doi.org/10.5195/d3000.2026.1431

Nøgleord:

3D Printing, Oral Surgery, Dental Implants

Resumé

To compare the accuracy of surgical guides manufactured with two different 3D printers, two resins, two different occlusal designs (OS: original shape, and GS: groove sealing), and interactions of these factors were used. Forty surgical guides were printed on a digital light processing (DLP) printer and a Liquid Crystal Display (LCD) printer, with two resin types (SG guide and V-guide) and two occlusal designs. The region where the implant was planned was digitally removed from the cast, allowing passive positioning of the implant through the guide. A scan body was inserted in the implant, and the cast was scanned with an intraoral scanner. The planned implant compared with the actual implant position. Six measurements representing the accuracy of implant placement: (depth, angular, global apical, horizontal apical, global coronal, and horizontal coronal) deviations. Descriptive statistics and a multivariate analysis of variance (MANOVA) were conducted. Printer type had a statistically significant multivariate effect (Wilks’ Lambda = 0.015, p< 0.001, Partial η² = 0.985). The resin type had no multivariate effect on the combined dependent variables, as indicated by Wilks’ Λ = 0.727, p = 0.161. Occlusal shape showed a significant multivariate effect (Wilks’ Lambda = 0.015, p<0.001). The univariate tests revealed that printer type and the shape of the occlusal surface had a statistically significant effect on all six deviation parameters (p < 0.001 for all); however, resin type had a significant effect only on horizontal coronal deviation (p = 0.018). The multivariate analysis using Wilks’ Lambda revealed a significant interaction effect between printer and resin (Wilks’ Λ = 0.593, F (6,27) = 3.094, p = 0.019, Partial η² = 0.407), A significant interaction was also observed between printer and occlusal design (Wilks’ Λ = 0.445, F (6,27) = 5.606, p = 0.001, Partial η² = 0.555) and between printer, resin, and occlusal surface (Wilks’ Λ = 0.414, F (6,27) = 6.380, p < 0.001, Partial η² = 0.586). The DLP printer group and groove sealing group were more accurate than the LCD printer, and occlusal surface group. The accuracy of both SG and V-guide resins was the same.

Downloads

Publiceret

2026-07-14

Nummer

Årg. 14 Nr. 2 (2026)

Sektion

Infancy & Adolescence

Licens

Copyright (c) 2026 Israa Hasan Ismael, Radhwan Himmadi Hasan

Creative Commons License

Dette værk er under følgende licens Creative Commons Navngivelse (by).

Authors who publish with this journal agree to the following terms:

  1. The Author retains copyright in the Work, where the term “Work” shall include all digital objects that may result in subsequent electronic publication or distribution.
  2. Upon acceptance of the Work, the author shall grant to the Publisher the right of first publication of the Work.
  3. The Author shall grant to the Publisher and its agents the nonexclusive perpetual right and license to publish, archive, and make accessible the Work in whole or in part in all forms of media now or hereafter known under a Creative Commons Attribution 4.0 International License or its equivalent, which, for the avoidance of doubt, allows others to copy, distribute, and transmit the Work under the following conditions:
    1. Attribution—other users must attribute the Work in the manner specified by the author as indicated on the journal Web site;
    with the understanding that the above condition can be waived with permission from the Author and that where the Work or any of its elements is in the public domain under applicable law, that status is in no way affected by the license.
  4. The Author is able to enter into separate, additional contractual arrangements for the nonexclusive distribution of the journal's published version of the Work (e.g., post it to an institutional repository or publish it in a book), as long as there is provided in the document an acknowledgement of its initial publication in this journal.
  5. Authors are permitted and encouraged to post online a prepublication manuscript (but not the Publisher’s final formatted PDF version of the Work) in institutional repositories or on their Websites prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work. Any such posting made before acceptance and publication of the Work shall be updated upon publication to include a reference to the Publisher-assigned DOI (Digital Object Identifier) and a link to the online abstract for the final published Work in the Journal.
  6. Upon Publisher’s request, the Author agrees to furnish promptly to Publisher, at the Author’s own expense, written evidence of the permissions, licenses, and consents for use of third-party material included within the Work, except as determined by Publisher to be covered by the principles of Fair Use.
  7. The Author represents and warrants that:
    1. the Work is the Author’s original work;
    2. the Author has not transferred, and will not transfer, exclusive rights in the Work to any third party;
    3. the Work is not pending review or under consideration by another publisher;
    4. the Work has not previously been published;
    5. the Work contains no misrepresentation or infringement of the Work or property of other authors or third parties; and
    6. the Work contains no libel, invasion of privacy, or other unlawful matter.
  8. The Author agrees to indemnify and hold Publisher harmless from Author’s breach of the representations and warranties contained in Paragraph 6 above, as well as any claim or proceeding relating to Publisher’s use and publication of any content contained in the Work, including third-party content.

Revised 7/16/2018. Revision Description: Removed outdated link.