Quantitative assessment of S. mutans and C. albicans in patients with Haas and Hyrax expanders

Abstract

OBJECTIVE: To assess and compare the number of Streptococcus mutans and Candida albicans colonies in patients with Haas and Hyrax appliances before and after insertion. METHODS: The sample consisted of 84 patients requiring orthodontic treatment. For all patients a midpalatal suture expansion was indicated. Patients were randomly divided into Group HA, who used the Haas appliance (n = 42) and Group HY, who used the Hyrax appliance (n = 42). Initially and thirty days after appliance insertion all patients were submitted to saliva collections. The saliva was diluted followed by seeding in Mitis Salivarius and CHROMagar media, for growth of S. mutans and C. albicans respectively. RESULTS: Results showed statistically significant difference between groups HA and HY for Streptococcus mutans and Candida albicans (p <0.05). Haas appliance promoted greater S. mutans and C. albicans proliferation when compared to Hyrax appliance. CONCLUSION: The Haas appliance favored greater proliferation of S. mutans and C. albicans when compared with the Hyrax appliance. Insertion of the appliances resulted in greater buildup of microorganisms

Investigation of Oral Candida Albicans Colonization in Patients Treated with Rapid Maxillary Expansion

“…Pithon et al (11) found that the amount of microorganisms significantly increased in patients treated with the Haas and Hyrax palatal expanders, but the numbers of Streptococcus mutans and C. albicans were higher in the individuals using Haas appliances compared to those using the Hyrax appliance.…”

“…The primary purpose of RME devices is to obtain the lateral expansion force by the movements of the basal maxillary bone (3). The Haas appliance is commonly used for this purpose; it consists of acrylic resin components and is kept in the mouth for approximately four months (11).…”

“…Biofilm formation and the fixation of primary bacterial colonization begins immediately after the placement of orthodontic appliances (17). Clinically, when the RME is removed from the mouth, a thick biofilm layer can be observed under the acrylic component (11). Kitada et al (18) found that opportunistic bacteria and fungi are more commonly isolated in the oral cavity of orthodontic patients.…”

Hareketli̇ Fonksi̇yonel Aparey Kullanan Hastalarda Oral C. Albi̇cans Koloni̇zasyonunun Araştirilmasi

“…3,[5][6][7] Biyofilm formasyonu ortodontik aparey uygulandıktan hemen sonra başlamaktadır. 8 Bu durumda, ağız hijyeninin yeterli olmadığı durumlarda, bireye uygulanan ortodontik tedavi yarar vermek yerine zarar vererek kötü sonuçların ortaya çıkabilmesine sebep olabilmektedir. 9 Ortodontik apareyler ağız içine uygulandıktan sonra, spesifik tükürük proteinleri apareyin farklı yüzeyine tutunur ve bu durum bakteri adezyonunda önemli rol oynar.…”

“…Akrilik yapıya ilaveten, dental hijyende zorlanma, damak derinliği, diş fırçalama tekniği ve sıklığı gibi bazı faktörler de C. Albicans proliferasyonunu etkileyebilmektedir. 8 Biz de çalışmamızda fonksiyonel ortodontik tedavinin ilk 3 ayı boyunca, hareketli aparey kullanımına bağlı olarak ağızdaki candida kolonizasyonunda herhangi bir deği-şiklik olup olmadığını tespit etmeyi hedefledik.…”