Avaliação do perfil imunologico de pacientes sensiveis ao niquel proveniente de aparelhos ortodonticos fixos

AUTOR(ES)
DATA DE PUBLICAÇÃO

1999

RESUMO

Allergies related to dentistry generally are delayed hypersensitivity reactions to specific dental materials particularly to nickel. Clinical reactions to this metal from orthodontic appliances include gingival edema, hypertrophy, bleeding, swollen, fissure lips and chronic eczema of the cheeks. The main diagnostic test for nickel allergy is the Patch test, which can give false negative results. The purpose of this study was established immunological parameters for differential diagnosis using patients in extensive orthodontic treatment and with clinical history to nickel hypersensitivity. We use lymphocyte proliferation test using nickel leached from orthodontic metal appliances and NtS04.6H20 and ELISA for cytokines on the supernatant of cultured cells to detect the involvement of Thl and Th2 subset The results showed that 10/tg/ml of N1SO4 solution was more effective to stimulate PBMC from patients with oral clinical manifestation when compared with 5 and2.5iug/ml of NiS04 solutions. On the other hand, nickel solutions obtained from orthodontic metal appliances inhibited the proliferative PBMC response to the same patients in a dose-dependent manner. Statistical analysis showed a positive correlation between persons with clinical manifestation and the PBMC proliferation test. Finally, results showed no 1L-5 and IFN-y production on the supernatant of PBMC cells stimulated with either nickel solutions in those specific conditions used in our assays

ASSUNTO(S)

niquel ortodontia alergia imunologia

ACESSO AO ARTIGO

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