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

  • João Batista César Neto USP
  • Miguel Roberto Simões Régio UFPel
  • Josué Martos UFPel
  • Francieli Spautz UFPel
  • Giliani Bizarello de Moraes UFPel
Keywords: Periodontium, orthodontic anchorage procedures, dental plaque


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.

Author Biographies

João Batista César Neto, USP
Professor do Departamento de Estomatologia
Miguel Roberto Simões Régio, UFPel
Professor Associado do Departamento de Odontologia Social e Preventiva
Josué Martos, UFPel
Professor Adjunto do Departamento de Semiologia e Clínica
Francieli Spautz, UFPel
Academica de Odontologia
Giliani Bizarello de Moraes, UFPel
Acadêmica de Odontologia
Original Article