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205 - Retention of Dental Cements to Band-and-Loop Space Maintainers

Friday, May 22, 2026
4:40 PM - 4:55 PM PST
Has Audio

    Presenting Author(s)

  • Bryan Truong, DDS (he/him/his)

    Resident
    University of Tennessee Health Science Center (UTHSC)
    University of Tennessee Health and Science Center
    Hernando, Mississippi, United States

    • Co-Author(s)

  • AV

    Autheunis Versluis, PhD

    UTHSC College of Dentistry

  • DV

    Darenee Verlsuis-Tantbirojn, DDS, MS, PhD

    Professor
    UHTSC College of Dentistry
    UHTSC College of Dentistry

  • Martha H. Wells, DMD, MS

    Chief of Dentistry
    St. Jude Childrend's Research Hospital
    St. Jude Children's Research Hospital
    Memphis, Tennessee, United States

  • Ji Min Yochim, DMD, MS, PhD

    Assistant Professor, Research Director
    UTHSC College of Dentistry, Pediatric Dentistry and Community Oral Health
    UTHSC College of Dentistry, Pediatric Dentistry and Community Oral Health
    Memphis, Tennessee, United States

    • Research Mentor(s)

  • Ji Min Yochim, DMD, MS, PhD

    Assistant Professor, Research Director
    UTHSC College of Dentistry, Pediatric Dentistry and Community Oral Health
    UTHSC College of Dentistry, Pediatric Dentistry and Community Oral Health
    Memphis, Tennessee, United States

    • Program Director(s)

  • Volk V. Vinall, DMD

    Program Director
    The University of Tennessee Health Science Center
    Memphis, Tennessee, United States

Abstract:

Purpose: To compare retention strength between orthodontic band-and-loop space maintainers and stainless steel crowns of 4 luting cements.

Methods: Two types of band-and-loop space maintainers (NuSmile and Denovo) were cemented onto stainless-steel crowns with one of 4 luting cements (GC FujiCEM 2, G-CEM Capsule, Ketac Cem Radiopaque Glass Ionomer Luting Cement, and 3M RelyX Unicem 2 Automix). Specimens underwent 5,000 thermocycles between 5°C and 55°C to simulate 6 months of clinical function. Retention strength between the space maintainers and crowns was tested using auniversal testing machine by pressing on the joint at 1.0 mm/min until the band was dislodged. The maximum force was recorded. Data were statistically analyzed using two-way ANOVA followed by pairwise comparisons (α=0.05). Sample size was 10 per group.

Results: Mean dislodging loads ranged from 114 to 178N. Loads were significantly influenced by cement type (P < .001), whereas band type had no significant effect (P=.052). Bands cemented with Fuji II CEM demonstrated significantly higher dislodgement loads compared to Ketac cement, Ortho cement, or RelyX. No significant differences were observed among Ketac cement, Ortho cement, and RelyX for NuSmile bands. For Denovo bands, Fuji II CEM and RelyX showed significantly higher dislodgement loads compared to Ketac and Ortho cements.

Conclusion: Luting cement selection significantly influences orthodontic band retention over stainless-steel crowns. Fuji II CEM required the highest dislodgement loads, and RelyX also showed favorable performance with Denovo bands. This in vitro study suggests that luting cement selection has important clinical implications in improving the longevity of space maintainers.

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