A comparative in vitro study of different composite materials in terms of aligner attachment accuracy and surface roughness using different curing irradiances - 11/12/24
Summary |
Background |
To evaluate 4 different composite resins in terms of aligner attachment accuracy and surface roughness.
Material and methods |
160 premolars were divided into 4 groups ( n = 40): Group 1: GC Aligner Connect™; 2: GC Ortho Connect™; 3: 3M ESPE Filtek™ Z350 XT flowable; 4: 3M ESPE Filtek™ Z350 XT Universal. Each group was divided into 2 equal subgroups regarding curing irradiances (Power of 1000 mW/cm 2 in subgroup A for 10 s, and 3200 mW/cm 2 in B for 3 s, VALO™ Cordless-LED Curing Light). The primary objective was to compare the realized attachments with those of the virtual with 3D Geomagic software. A contact surface profiler was used for roughness measurement (Ra) as the secondary aim. The data were analysed using the IBM SPSS 25.0. The significance level was set at p < 0.05.
Results |
In subgroup A, the mean “excess” accuracy measurement of the 3M ESPE Filtek ™Z350 XT flowable resin was found to be higher than others. In subgroup B, the “excess” accuracy measurements of the 3M ESPE Filtek™Z350 XT flowable (0.24 ± 0.07 mm) and Universal (0.26 ± 0.05 mm) resins were significantly higher than those of the GC Aligner Connect™ resin (0.17 ± 0.06 mm), ( p < 0.05). According to the Ra measurements in subgroup A, the measurement of the GC Aligner Connect™ (1.75 ± 1.09 μm), GC Ortho Connect™ (0.99 ± 1.04 μm) and 3M ESPE Filtek™ Z350 XT flowable (1.33 ± 1.16 μm) resins were found to be higher than of the Universal resin (0.07 ± 0.11 μm), ( p < 0.05). In subgroup B, the Ra measurement of the GC Aligner Connect™ (1.74 ± 1.81 μm) was found to be higher than that of the 3M ESPE Filtek™ Z350 XT flowable (0.11 ± 0.18 μm) resin ( p = 0.010). Ra measurement observed for the 10-second curing factor for the 3M ESPE Filtek™ Z350 XT Flowable resin group was found to be significantly higher than for the 3-second curing factor ( p < 0.001).
Conclusion |
In terms of “excess” value of accuracy, 3M ESPE Filtek™ Z350 XT flowable composite resin showed a higher value. The lowest surface roughness was observed for Universal restorative resin considering low power irradiation, while was observed for 3M ESPE Filtek™ Z350 XT flowable resin considering high power irradiation.
Le texte complet de cet article est disponible en PDF.Keywords : Aligner, Composite resin, Attachment bonding, Curing time, Placement accuracy, Dentistry, Orthodontics
Plan
Vol 23 - N° 2
Article 100961- juin 2025 Retour au numéro
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