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

作者：Pazzini Camila Alessandra; Marques Leandro Silva^*; Ramos Jorge Maria Leticia; Oliveira Junior Gilberto; Pereira Luciano Jose; Paiva Saul Martins

来源：The Angle Orthodontist, 2012, 82(4): 653-657.

DOI：10.2319/080211-487.1

• Nickel allergy
• Orthodontic treatment
• Nickel-free braces

Objective: To perform a longitudinal comparison of periodontal status in allergic individuals treated with conventional and nickel-free braces. %26lt;br%26gt;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 (TO) and at 3-month intervals for 12 months (T1, T2, T3, and 14), using the Loe 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%26apos;s test for successive comparisons between sessions in the same group (P %26lt;= .05). %26lt;br%26gt;Results: Periodontal status did not differ between groups in the initial 9 months of treatment, whereas significant differences were found at 13 and T4 (.039 and .047, respectively). Individuals wearing conventional appliances had higher mean gingival index scores than those wearing nickel-free braces. %26lt;br%26gt;Conclusion: Individuals with an allergy to nickel exhibit better periodontal health when treated with nickel-free braces than with conventional braces. (Angle Orthod. 2012;82:653-657.)

• 出版日期2012-7