A comparative in vitro study of different composite materials in terms of aligner attachment accuracy and surface roughness using different curing irradiances

ERBAŞ S., ATİK E.

INTERNATIONAL ORTHODONTICS, vol.23, no.2, 2025 (ESCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 23 Issue: 2
  • Publication Date: 2025
  • Doi Number: 10.1016/j.ortho.2024.100961
  • Journal Name: INTERNATIONAL ORTHODONTICS
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus, EMBASE, MEDLINE
  • Hacettepe University Affiliated: Yes

Abstract

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 (TM); 2: GC Ortho Connect (TM); 3: 3M ESPE Filtek (TM) Z350 XT flowable; 4: 3M ESPE Filtek (TM) 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 (TM) 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 TM Z350 XT flowable resin was found to be higher than others. In subgroup B, the "excess" accuracy measurements of the 3M ESPE Filtek(TM ) 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(TM )resin (0.17 +/- 0.06 mm), (p < 0.05). According to the Ra measurements in subgroup A, the measurement of the GC Aligner Connect(TM )(1.75 +/- 1.09 m), GC Ortho Connect(TM ) (0.99 +/- 1.04 mu m) and 3M ESPE Filtek(TM ) Z350 XT flowable (1.33 +/- 1.16 mu m) resins were found to be higher than of the Universal resin (0.07 +/- 0.11 mu m), (p < 0.05). In subgroup B, the Ra measurement of the GC Aligner Connect(TM )(1.74 +/- 1.81 m) was found to be higher than that of the 3M ESPE Filtek(TM ) Z350 XT flowable (0.11 +/- 0.18 mu m) resin (p = 0.010). Ra measurement observed for the 10-second curing factor for the 3M ESPE Filtek(TM ) Z350 XT Flowable resin group was found to be significantly higher than for the 3second curing factor (p < 0.001). Conclusion > In terms of "excess" value of accuracy, 3M ESPE Filtek(TM ) 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(TM ) Z350 XT flowable resin considering high power irradiation.