ArticleJournal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie2026
Comparative in vitro study of bond strength of two-step orthodontic bonding systems : Self-adhesive composite vs. self-etching primer.
Article in Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
2 citing papers in PubMed.
- Effects of a cold atmospheric plasma device utilizing ambient air on bracket bonding to human enamel and surface roughness after debonding.Clinical oral investigations · 2026Article
- Effects of demineralization around orthodontic brackets bonded with different adhesive agents on fatigue-based shear bond strength: an in vitro comparative study.BMC oral health · 2026Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThis in vitro study aimed to compare the shear bond strength (SBS) and Adhesive Remnant Index (ARI) scores of two-step orthodontic bonding systems: self-etching primer (SEP) and a self-adhesive composite. Both systems were compared to a control group with a conventional three-step adhesive.
methodsA total of 72 extracted maxillary and mandibular premolars were randomly divided into four groups (n = 18): group 1(XT), the control group, used Transbond™ XT (conventional adhesive; 3M Unitek, Monrovia, CA, USA); group 2 (GC) used GC Ortho Connect™ (self-adhesive composite; GC Orthodontics Inc., Tokyo, Japan); group 3 (GCP) used GC primer with GC Ortho Connect™; and group 4 (SEP) used Transbond™ Plus Self-Etching Primer with Transbond™ XT. Teeth were stored in water at 37 °C for 24 h prior to SBS testing using an Instron 5543 device (Instron, Norwood, MA, USA), and ARI scores were assessed under a stereomicroscope. Data were analyzed using analysis of variance (ANOVA) and nonparametric tests.
resultsIn total, 60 samples were analyzed. The GCP group exhibited the highest SBS (8.35 MPa ± 1.99), significantly higher than the XT (4.99 MPa ± 1.32, p < 0.001) and SEP (5.69 MPa ± 2.10, p = 0.001) groups. The GC group (7.50 MPa ± 1.92) also showed higher SBS than XT (p = 0.003) and the SEP group (p = 0.048). ARI scores showed no significant difference between groups overall (p = 0.303), but the GCP group had significantly higher ARI scores than the SEP group (p = 0.023).
conclusionGC Ortho Connect™ with or without primer demonstrated superior bond strength compared to conventional and self-etching systems, making it a viable alternative for clinical use. Further in vivo studies are needed to confirm these findings.
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Registered trials
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