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The impacts of microstructures and airborne-particle abrasion on the additively manufactured zirconia bond strength with and without thermocycling.

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Title: The impacts of microstructures and airborne-particle abrasion on the additively manufactured zirconia bond strength with and without thermocycling.
Authors: Wang, Mengwei1 (AUTHOR), Liu, Jiabao1 (AUTHOR), Xu, Boxuan1 (AUTHOR), Lin, Wei-Shao2 (AUTHOR), Tan, Jianguo1 (AUTHOR), Chen, Li1 (AUTHOR) lichen@pku.edu.cn
Source: Dental Materials. Apr2026, Vol. 42 Issue 4, p578-585. 8p.
Subjects: Microstructure, Bond strengths, Rapid prototyping, Zirconium oxide, Resin adhesives, Thermocycling, Surface topography, Abrasive blasting
Abstract: To evaluate effects of additively manufactured microstructures, airborne-particle abrasion (APA), and thermocycling on zirconia-resin shear bond strength (SBS). Zirconia discs (N = 280) with microarchitectures of varying protrusion coverage (30 %, 50 %, 70 %) and height (50 μm, 100 μm), along with a non-textured control, were fabricated using Advanced Customized Jetting (ACJ). Specimens were assigned to groups based on APA treatment and thermocycling (15,000 cycles, 5–55 °C). Surface topography was evaluated through contour maps and roughness parameters. After bonding specimens to resin columns (Clearfil AP-X) using light-cured resin cement (Clearfil SA Luting), SBS was tested and analyzed using stepwise linear regression. Failure modes were classified via stereomicroscopy and analyzed using chi-square tests. Microstructured groups exhibited significantly higher SBS than controls (P < 0.001), with height (β=0.769) and APA (β=0.268) as key predictors (adjusted R²=0.660). The 50 % proportion/100 µm height/APA group achieved the highest SBS (6.78 ± 0.82 MPa pre-aging; 6.25 ± 0.83 MPa post-aging) and a low adhesive failure rate. Thermocycling increased adhesive failures (P < 0.001) without affecting SBS (P = 0.954). Additively manufactured microstructures, particularly those with 50 % proportion, 100 µm height and APA treatment, significantly enhance zirconia-resin bond strength and durability, offering a promising strategy for improving clinical retention of zirconia restorations. • Microstructures on irregular curve surfaces were designed and fabricated, enhancing bonding strength while maintaining surface integrity. • Adhesive properties of advance customized jetting, a new 3D-printing technology, were explored, complementing existing mechanical property studies. • Advanced surface analysis using Rku and Rsk parameters reveals how microstructural morphology affects adhesive performance. [ABSTRACT FROM AUTHOR]
Copyright of Dental Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Label: Title
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  Data: The impacts of microstructures and airborne-particle abrasion on the additively manufactured zirconia bond strength with and without thermocycling.
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Wang%2C+Mengwei%22&quot;&gt;Wang, Mengwei&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Liu%2C+Jiabao%22&quot;&gt;Liu, Jiabao&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Xu%2C+Boxuan%22&quot;&gt;Xu, Boxuan&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Lin%2C+Wei-Shao%22&quot;&gt;Lin, Wei-Shao&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Tan%2C+Jianguo%22&quot;&gt;Tan, Jianguo&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Chen%2C+Li%22&quot;&gt;Chen, Li&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; lichen@pku.edu.cn&lt;/i&gt;
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Dental+Materials%22&quot;&gt;Dental Materials&lt;/searchLink&gt;. Apr2026, Vol. 42 Issue 4, p578-585. 8p.
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– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: To evaluate effects of additively manufactured microstructures, airborne-particle abrasion (APA), and thermocycling on zirconia-resin shear bond strength (SBS). Zirconia discs (N = 280) with microarchitectures of varying protrusion coverage (30 %, 50 %, 70 %) and height (50 μm, 100 μm), along with a non-textured control, were fabricated using Advanced Customized Jetting (ACJ). Specimens were assigned to groups based on APA treatment and thermocycling (15,000 cycles, 5–55 &#176;C). Surface topography was evaluated through contour maps and roughness parameters. After bonding specimens to resin columns (Clearfil AP-X) using light-cured resin cement (Clearfil SA Luting), SBS was tested and analyzed using stepwise linear regression. Failure modes were classified via stereomicroscopy and analyzed using chi-square tests. Microstructured groups exhibited significantly higher SBS than controls (P &lt; 0.001), with height (β=0.769) and APA (β=0.268) as key predictors (adjusted R&#178;=0.660). The 50 % proportion/100 &#181;m height/APA group achieved the highest SBS (6.78 &#177; 0.82 MPa pre-aging; 6.25 &#177; 0.83 MPa post-aging) and a low adhesive failure rate. Thermocycling increased adhesive failures (P &lt; 0.001) without affecting SBS (P = 0.954). Additively manufactured microstructures, particularly those with 50 % proportion, 100 &#181;m height and APA treatment, significantly enhance zirconia-resin bond strength and durability, offering a promising strategy for improving clinical retention of zirconia restorations. • Microstructures on irregular curve surfaces were designed and fabricated, enhancing bonding strength while maintaining surface integrity. • Adhesive properties of advance customized jetting, a new 3D-printing technology, were explored, complementing existing mechanical property studies. • Advanced surface analysis using Rku and Rsk parameters reveals how microstructural morphology affects adhesive performance. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: &lt;i&gt;Copyright of Dental Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.dental.2025.11.018
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 8
        StartPage: 578
    Subjects:
      – SubjectFull: Microstructure
        Type: general
      – SubjectFull: Bond strengths
        Type: general
      – SubjectFull: Rapid prototyping
        Type: general
      – SubjectFull: Zirconium oxide
        Type: general
      – SubjectFull: Resin adhesives
        Type: general
      – SubjectFull: Thermocycling
        Type: general
      – SubjectFull: Surface topography
        Type: general
      – SubjectFull: Abrasive blasting
        Type: general
    Titles:
      – TitleFull: The impacts of microstructures and airborne-particle abrasion on the additively manufactured zirconia bond strength with and without thermocycling.
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            NameFull: Wang, Mengwei
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            NameFull: Liu, Jiabao
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            NameFull: Xu, Boxuan
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            NameFull: Lin, Wei-Shao
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            NameFull: Tan, Jianguo
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            – D: 01
              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
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              Value: 42
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              Value: 4
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            – TitleFull: Dental Materials
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