Longitudinal assessment of periodontal status in patients with nickel allergy treated with conventional and nickel-free braces.

Abstract

OBJECTIVE:

To perform a longitudinal comparison of periodontal status in allergic individuals treated with conventional and nickel-free braces.

MATERIALS AND METHODS:

Forty-two individuals allergic to nickel were randomly divided into two groups: those receiving conventional braces (n  =  21) and those receiving nickel-free braces (n  =  21). Periodontal status (gingival hyperplasia, change in color and bleeding) was assessed before treatment (T0) and at 3-month intervals for 12 months (T1, T2, T3, and T4), using the Löe Index. Evaluations were performed blindly by a single, calibrated examiner, followed by prophylaxis and orientations regarding oral hygiene. Data were analyzed using the Mann-Whitney U-test for comparisons of the gingival index between groups and Friedman's test for successive comparisons between sessions in the same group (P ≤ .05).

RESULTS:

Periodontal status did not differ between groups in the initial 9 months of treatment, whereas significant differences were found at T3 and T4 (.039 and .047, respectively). Individuals wearing conventional appliances had higher mean gingival index scores than those wearing nickel-free braces.

CONCLUSION:

Individuals with an allergy to nickel exhibit better periodontal health when treated with nickel-free braces than with conventional braces.

• Authors: Camila Alessandra Pazzini, Leandro Silva Marques, Maria Letícia Ramos-Jorge, Gilberto Oliveira Júnior, Luciano José Pereira, Saul Martins Paiva
• Journal: The Angle orthodontist (Angle Orthod) Vol. 82 Issue 4 Pg. 653-7 (Jul 2012) ISSN: 1945-7103 [Electronic] United States
• PMID: 22044116 (Publication Type: Comparative Study, Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)

Chemical References

• Nickel

Topics

• Adolescent
• Adult
• Child
• Female
• Gingiva (physiopathology)
• Humans
• Hypersensitivity (complications)
• Longitudinal Studies
• Male
• Middle Aged
• Nickel (adverse effects)
• Orthodontic Appliances (adverse effects)
• Periodontal Index