2026/06/24 by Mariantonietta Leo, Ishan El Khadery, Michel Dalstra +3 · 1 voice
Dentistry · #Dental materials and restorations #Endodontics and Root Canal Treatments #Dental Implant Techniques and Outcomes
paper · pdf · doi:10.2340/biid.v13.46290
openalex publication_date 2026/06/24 · openalex created_date 2026/06/25 · openalex updated_date 2026/07/26
Aim: This in vitro study compared the pull‑off bond strength of orthodontic molar bands cemented to enamel using a novel fast‑setting and bioactive calcium silicate cement (CSC), a glass ionomer cement (GIC), and a zinc phosphate cement after 1 month of storage in phosphate‑buffered saline (PBS). Materials and Methods: Ninety extracted human molars were randomly allocated to three groups and fitted with orthodontic molar bands. Bands were cemented using a novel fast‑setting CSC (Protooth), a GIC (Orthocem B), or a zinc phosphate cement (DeTrey Zinc) according to manufacturers’ instructions. After storage in PBS for 28 days, band debonding was performed using a universal testing machine in a wire‑loop pull‑off configuration at a cross‑head speed of 1 mm/min. The maximum load at failure was divided by the band surface area to calculate pull‑off bond strength (MPa). Data were analyzed using the Kruskal–Wallis test followed by pairwise Mann–Whitney U tests with Holm–Bonferroni correction (α = 0.05).Results: The median pull‑off bond strength of the CSC was 1.22 MPa (interquartile range [IQR]: 0.93–1.34 MPa), which was significantly higher than that of the GIC 0.50 MPa (IQR: 0.33–0.79 MPa; p < 0.05). No statistically significant difference was observed between the CSC and zinc phosphate cement 0.92 MPa (IQR: 0.61–1.23 MPa; p ≥ 0.05). All specimens exhibited similar failure modes, with less than 30 % cement remaining on enamel following debonding.Conclusions: Within the limitations of this in vitro study, the novel fast‑setting CSC demonstrated pull‑off bond strength similar to zinc phosphate cement and significantly higher than GIC after 1 month of storage in PBS. Further studies are required to evaluate the clinical performance and long‑term behavior of this material.