Effect of different fixed lingual retainers on tooth mobility: prospective clinical study
DOI:
https://doi.org/10.2340/aos.v84.44808Keywords:
Retention and stability, tooth mobility, PeriotestAbstract
Objective: The aim of this study was to compare the effects of different fixed lingual retainers (LRs) on tooth mobility after orthodontic treatment at the 10-month follow-up.
Methods: 72 patients were allocated to three different LR groups (Ortho FlexTech® chain, Bond-A-Braid®, Penta-One®). Additionally, 20 non-treated people were included as a control group. The mobility of six mandibular anterior teeth was measured using a Periotest® device at each time points (before application of LR [T0], immediately after application of LR [T1] and 10 months after [T2] the application of the LR), and at only one time (T0) for the control group.
Results: The mobility value was significantly lower at T1 and T2 compared to that at T0 (P < 0.05); yet, there were no differences at T1 and T2 in all LR groups (P > 0.05). No significant differences in mobility between the T0-T1, T0-T2, and T1-T2 time points were observed across the LR groups (P > 0.05). The mobility of teeth 33 and 43 decreased over time across all study groups (P < 0.05).
Conclusions: Mobility decreased immediately after LR application, but did not change during the 10-month follow-up in the treatment groups. The observed decrease in mobility of canines over time, in contrast to other teeth, suggests a relationship between root size and mobility.
Trial registration: The current clinical trial was recorded at clinicaltrials.gov, NCT06284499, 08/02/2024, retrospectively registered.
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