Journal
JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY
Volume 109, Issue 1, Pages 131-135Publisher
MOSBY-ELSEVIER
DOI: 10.1067/mai.2002.120557
Keywords
latex allergy; occupational rhinitis; asthma; urticaria
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Background: A high rate of sensitization and clinical allergy to natural rubber latex (NRL) gloves has been reported in dental students and staff members. Objective: The purpose of this study was to determine whether a change in glove use from high-protein/powdered to low-protein/powder-free latex gloves at a previously surveyed dental school reduced the prevalence of NRL sensitivity among students and staff members. Methods: A cross-sectional study was performed through use of a questionnaire and skin prick testing to low ammoniated NRL extract; the method was similar to that used in a study conducted in 1995. Analyses were performed on the entire groups as well as on a subset of senior students. Results: A total of 97 subjects (61 students and 36 staff members) completed the questionnaire and underwent skin prick testing; this compared with 131 subjects in 1995. Percentages of subjects reporting asthma symptoms, rhinitis or conjunctivitis, urticaria, or pruritis within minutes of NRL exposure were 4%, 7%, 6%, and 8%, respectively; the corresponding percentages in the 1995 survey were 7% (P = not significant), 13% (P = not significant), 20% (P = .004), and 22% (P = .005). Results were similar for the subset of senior students, but in addition there were also significantly fewer complaints of rhinoconjunctivitis in 2000 than in 1995 (0% and 12%, respectively; P = .007). Of 97 subjects who underwent skin prick testing, 3 (3%) had positive skin prick test responses of 2+ or greater to NRL; this compared with 13 (10%) of 131 subjects in 1995 (P = .03). There were 3 positive skin test responses among staff members in 2000; there were none among students. Conclusions: Our results suggest a preventive effect on NRL allergy in dental students from the change to low-protein/powder-free NRL gloves in the dental school.
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