Evaluation of Shear Bond Strength of Various Chairside Reline Materials to 3D Printed Provisional Crown Resins Following Surface Treatment
Background: The reline material and interim base should bond well in provisional restorations. Few research examined 3D-printed restoration-relining bonding. To test the shear bond strength (SBS) of chairside crown reline materials to microfilled hybrid 3D-printed resin (PR) utilizing different surf...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wolters Kluwer Medknow Publications
2025-06-01
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| Series: | Journal of Pharmacy and Bioallied Sciences |
| Subjects: | |
| Online Access: | https://journals.lww.com/10.4103/jpbs.jpbs_31_25 |
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| Summary: | Background:
The reline material and interim base should bond well in provisional restorations. Few research examined 3D-printed restoration-relining bonding. To test the shear bond strength (SBS) of chairside crown reline materials to microfilled hybrid 3D-printed resin (PR) utilizing different surface treatments and materials.
Methods and Materials:
Three-dimensionally printed 360 provisional samples were divided into six groups based on surface treatment (monomer, 5% hydrofluoric acid, monomer and 5% hydrofluoric acid, monomer and 110 μm aluminum oxide, and control groups) and subgroups based on relining material (flowable composite resin, bis-acrylic, and poly methyl methacrylate). A universal testing device determined the bonded samples’ SBS.
Results:
The group that received hydrofluoric acid and air abrasion surface treatment and was relined with flowable composite had a significantly higher SBS value than the other groups. On the other hand, the group that received hydrofluoric acid and was relined with flowable composite had a significantly lower SBS value.
Conclusion:
Bis-acryl resin outperforms 3D-PR in SBS. Surface preparation for 3D-printed provisional restorations should include hydrofluoric acid and air abrasion. |
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| ISSN: | 0976-4879 0975-7406 |