Comparing the accuracy of crown fitting between milling and 3D printing techniques using CAD/CAM technologies.

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  • Author(s): Alhamoudi FH
  • Source:
    Technology and health care : official journal of the European Society for Engineering and Medicine [Technol Health Care] 2024; Vol. 32 (4), pp. 2755-2768.
  • Publication Type:
    Journal Article; Comparative Study
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: IOS Press Country of Publication: Netherlands NLM ID: 9314590 Publication Model: Print Cited Medium: Internet ISSN: 1878-7401 (Electronic) Linking ISSN: 09287329 NLM ISO Abbreviation: Technol Health Care Subsets: MEDLINE
    • Publication Information:
      Publication: Amsterdam : IOS Press
      Original Publication: Amsterdam ; New York : Elsevier, c1993-
    • Subject Terms:
      Crowns* ; Printing, Three-Dimensional* ; Computer-Aided Design* ; Dental Prosthesis Design*/methods; Humans ; Molar
    • Abstract:
      Background: The accuracy of dental crowns is crucial for their longevity and effectiveness.
      Objective: This study aims to investigate how the precision of crowns is affected by two different fabrication methods, either subtractive (milling) or additive (3D printing), within computer-aided design/computer-aided manufacture (CAD/CAM) technology.
      Methods: A standardised digital scan of a maxillary first molar with a shoulder margin (.stl file) was used to design and fabricate crowns through both subtractive (milling) and additive (3D printing) processes. The crowns' marginal and internal fits were assessed comprehensively. Statistical analysis, including two-way ANOVA and independent t-tests, revealed significant differences in fitting accuracy between the two methods.
      Results: Crowns produced via 3D printing demonstrated superior fitting with minimal marginal (14 ± 5 μm) and internal discrepancies (22 ± 5 μm) compared to milling (marginal: 22 ± 4 μm, internal: 23 ± 3 μm), indicating a statistically significant advantage in precision (p⁢s⩽ 0.022 for marginal fit).
      Conclusion: The findings suggest that 3D printing may offer a more accurate alternative to milling in the fabrication of digital dental prostheses, potentially revolutionising the field with its enhanced precision capabilities.
    • Contributed Indexing:
      Keywords: 3D Printing; 3D scanner; CAD/CAM; Digital crowns; dental material; fit accuracy; milling
    • Publication Date:
      Date Created: 20240531 Date Completed: 20240712 Latest Revision: 20240712
    • Publication Date:
      20240713
    • Accession Number:
      10.3233/THC-231961
    • Accession Number:
      38820032