Banca de DEFESA: LUCAS LUCENA LEIROS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : LUCAS LUCENA LEIROS
DATE: 31/07/2025
TIME: 08:30
LOCAL: Remoto
TITLE:

IMPACT OF LOWER FIXED RETAINERS ON PERIODONTAL TISSUE: AN OBSERVATIONAL STUDY

KEY WORDS:

Orthodontic Retainers; Orthodontic Appliances, Fixed; Orthodontics; Gingival Recession; Periodontics

PAGES: 90
BIG AREA: Ciências da Saúde
AREA: Odontologia
SUBÁREA: Periodontia
SUMMARY:

The use of fixed orthodontic retainers may negatively impact periodontal health, primarily due to the challenge of maintaining proper oral hygiene, which facilitates the accumulation of dental biofilm. Additionally, failures in the design or placement of the retainer can lead to unwanted tooth movements, contributing to mucogingival alterations. Therefore, this study aimed to evaluate and associate the presence of mucogingival alterations and clinical periodontal parameters in individuals using fixed orthodontic retainers on the lower anterior teeth. This was a cross-sectional observational study involving 32 patients, which assessed mucogingival alterations, clinical periodontal parameters, and unwanted tooth movements in individuals with lower fixed orthodontic retainers. Data collection included the evaluation of oral hygiene parameters (visible plaque index and gingival bleeding index) and periodontal parameters (probing depth, clinical attachment level, gingival recession, gingival phenotype, and bleeding on probing). The type of labial frenum insertion, retainer integrity, and intraoral photographic records for assessing tooth movement were also analyzed. Data analysis included the Shapiro-Wilk test, ANOVA with Tukey's post-hoc test, Kruskal-Wallis test with Dwass-Steel-Critchlow-Fligner comparisons, Pearson's chi-square test, and Fisher's exact test. The results of this study suggest that fixed lower orthodontic retainers may be associated with periodontal alterations. The hygienic-type retainer presented the highest visible plaque index (p = 0.004) and gingival bleeding index (p = 0.025), although no significant differences were found in probing depth or clinical attachment level among different retainer types. A higher prevalence of vestibular gingival recession was observed in vestibularized teeth (p < 0.001), with a tendency toward occurrence in individuals with thin gingival phenotype, although no significant association was found with retainer type or fixation. Patients' perceptions reflected the clinical findings, with 53.12% reporting gingival bleeding, 31.25% sensitivity, and 53.12% difficulty in oral hygiene. These findings suggest a potential association between lower fixed orthodontic retainers and periodontal changes.

COMMITTEE MEMBERS:
Presidente - 2085732 - ANA RAFAELA LUZ DE AQUINO MARTINS
Interno - 1378325 - ARTHUR CESAR DE MEDEIROS ALVES
Externa à Instituição - MARIANA LINHARES ALMEIDA - FACENE