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Clinical factors affecting the longevity of fixed retainers and the influence of fixed retainers on periodontal health in periodontitis patients: a retrospective study.
Han, Ji Young; Park, Seo Hee; Kim, Joohyung; Hwang, Kyung Gyun; Park, Chang Joo.
Afiliação
  • Han JY; Division of Periodontology, Department of Dentistry, Hanyang University College of Medicine, Seoul, Korea.
  • Park SH; Division of Periodontology, Department of Dentistry, Hanyang University Medical Center, Seoul, Korea.
  • Kim J; Division of Orthodontics, Department of Dentistry, Hanyang University Medical Center, Seoul, Korea.
  • Hwang KG; Division of Oral & Maxillofacial Surgery, Department of Dentistry, Hanyang University College of Medicine, Seoul, Korea.
  • Park CJ; Division of Oral & Maxillofacial Surgery, Department of Dentistry, Hanyang University College of Medicine, Seoul, Korea. fastchang@hanyang.ac.kr.
J Periodontal Implant Sci ; 51(3): 163-178, 2021 Jun.
Article em En | MEDLINE | ID: mdl-34114380
ABSTRACT

PURPOSE:

The aim of this study was to evaluate clinical factors affecting the longevity of fixed retainers and the influence of fixed retainers on periodontal health in periodontitis patients.

METHODS:

In total, 52 patients with at least 2 years of follow-up after periodontal and orthodontic treatment were included in this study. After scaling and root planing, orthodontic treatment with fixed appliances or clear aligners was performed. Fixed retainers with twist-flex stainless steel wires were bonded to the palatal or lingual sides of anterior teeth. Changes in clinical parameters, including the plaque index, gingival index, calculus index (CI), probing pocket depth, and radiographic bone levels, were evaluated before bonding of fixed retainers and at a 12-month follow-up. Cumulative survival rates (CSRs) for retainer failure were evaluated according to sex, site, CI, stage of periodontitis, and the severity of the irregularity with the log-rank test and hazard ratios (HRs).

RESULTS:

Twelve months after bonding of fixed retainers, improvements were observed in all clinical parameters except CI and radiographic bone gain. The overall CSR of the retainers with a CI <1 at the 12-month follow-up after bonding of fixed retainers was significantly higher than that of the retainers with a CI ≥1 at the 12-month follow-up (log-rank test; P<0.001). Patients with stage III (grade B or C) periodontitis had a higher multivariate HR for retainer failure (5.4; 95% confidence interval, 1.22-23.91; P=0.026) than patients with stage I (grade A or B) periodontitis.

CONCLUSIONS:

Although fixed retainers were bonded in periodontitis patients, periodontal health was well maintained if supportive periodontal treatment with repeated oral hygiene education was provided. Nonetheless, fixed retainer failure occurred more frequently in patients who had stage III (grade B or C) periodontitis or a CI ≥1 at 12-month follow-up after bonding of fixed retainers.
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Texto completo: 1 Base de dados: MEDLINE Tipo de estudo: Observational_studies Idioma: En Revista: J Periodontal Implant Sci Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Tipo de estudo: Observational_studies Idioma: En Revista: J Periodontal Implant Sci Ano de publicação: 2021 Tipo de documento: Article