Analysis of the periodontal status of patients with mandibular-bonded retainers

João Batista César Neto, Miguel Roberto Simões Régio, Josué Martos, Francieli Spautz, Giliani Bizarello de Moraes


Purpose: This clinical study evaluated the periodontal status of patients with bonded retainers as compared to a non-treated control group.
Methods: Forty dental students were included in the sample and divided into the following two groups: 1) a test group of 20 subjects that, after orthodontic treatment, have been bonded retainer users for at least 2 years and 2) a control group of 20 patients that never experienced orthodontic treatment nor used any bonded retainer. The region associated with the retainer in the test group and the lower canine-to-canine region in the control group were examined according to the following clinical parameters: plaque index (PI), bleeding on probing (BOP), gingival recession (GR), clinical attachment level (CAL) and probing depth (PD).
Results: No differences were observed for GR or BOP (P>0.05). In contrast, the test group showed higher values of CAL and PD at proximal sites when compared to controls (P<0.05). In addition, IP was significantly increased at buccal and lingual sites (P<0.05).
Conclusion: The placement of orthodontic bonded retainers negatively affected periodontal health, resulting in increased PI, PD and CAL.


Periodontium; orthodontic anchorage procedures; dental plaque

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e-ISSN: 1980-6523

ISSN-L: 0102-9460


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