Evidence map›Paper›PMID 42365618›Full record

ArticleClinical and experimental dental research2026

Effect of Bonding Height on Force-Moment Generation in Orthodontic Fixed Lingual Retainers: An In Vitro Study.

Francesca Thaden, Linus Hötzel, Benedikt Dotzer, Matthias Mertmann, Andrea Wichelhaus, Hisham Sabbagh

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Article in Clinical and experimental dental research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Francesca ThadenDepartment of Orthodontics and Dentofacial Orthopedics, LMU University Hospital, LMU Munich, Munich, Germany.
Linus HötzelDepartment of Orthodontics and Dentofacial Orthopedics, LMU University Hospital, LMU Munich, Munich, Germany.
Benedikt DotzerDepartment of Orthodontics and Dentofacial Orthopedics, LMU University Hospital, LMU Munich, Munich, Germany.
Matthias MertmannDepartment of Orthodontics and Dentofacial Orthopedics, LMU University Hospital, LMU Munich, Munich, Germany.
Andrea WichelhausDepartment of Orthodontics and Dentofacial Orthopedics, LMU University Hospital, LMU Munich, Munich, Germany.
Hisham SabbaghDepartment of Orthodontics and Dentofacial Orthopedics, LMU University Hospital, LMU Munich, Munich, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo investigate the effect of different bonding heights on force-moment generation in orthodontic fixed lingual retainers under loading in a biomechanical setup. MATERIALS AND

methodsThree commercially available lingual retainers were evaluated: two conventionally fabricated stainless-steel retainers (R1, R2) and one CAD/CAM-manufactured nickel-titanium retainer (R3). Using a biomechanical test setup, vertical forces and labiolingual moments were recorded and applied in three dimensions in response to a standardized vertical displacement of 0.3 mm. The effect of three standardized bonding heights (incisal, middle, and gingival thirds of the clinical crown) was assessed.

resultsBoth forces and moments increased with vertical loading. Statistically significant differences were observed among retainer materials, whereas bonding height did not significantly affect the outcomes. At 0.3 mm vertical displacement, the lowest force and moment were recorded for R1 bonded incisally (0.59 ± 0.37 N; 3.48 ± 0.37 Nmm), and the highest for R3 at mid-crown bonding height (1.40 ± 0.13 N; 8.70 ± 1.19 Nmm).

conclusionsRetainer type was found to have a greater influence on force and moment development than bonding height. Multistranded stainless-steel retainers may be more susceptible to deformation under occlusal loading. Further studies are required to determine the clinical relevance of bonding height in fixed lingual retainers.

Indexed as

Dental BondingOrthodontic Appliance DesignOrthodontic RetainersBiomechanical PhenomenaDental AlloysDental Stress AnalysisHumansIn Vitro TechniquesMaterials TestingNickelStainless SteelStress, MechanicalTitaniumDental AlloysNickelStainless SteelTitaniumtitanium nickelideadverse effectsbiomechanicsforceorthodontic retainertorque

Identifiers

PMID42365618
PMCPMC13310530

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.