Effect of 0.4% stannous fluoride gel on Streptococci mutans in relation to elastomeric rings and steel ligatures in orthodontic patients
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Data
2005-04-01
Autores
Brêtas, Sabryna Maria
Macari, Soraia
Elias, Ana Maria
Ito, Izabel Yoko
Matsumoto, Mírian Aiko Nakane
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Resumo
Background: Patients with fixed orthodontic appliances often experience an absolute increase in the number of Streptococci mutans colony-forming units (cfu). The aim of this investigation was to study the development of biofilm and S. mutans cfu in connection with stainless steel ligatures and elastomeric rings in orthodontic patients treated with and without 0.4% stannous fluoride gel (SFG). Material: Forty-seven patients were divided into 2 groups: those treated with 0.4% SFG for 4 minutes (experimental) and those without 0.4% SFG (control). In each patient, elastomeric rings were used for ligation on 1 side of the dental arch midline, and stainless steel ligatures were used on the opposite side. Saliva samples were collected before and after appliance placement. At 15 and 30 days after appliance placement, biofilm samples from the stainless steel ligatures and the elastomeric rings were collected and subjected to microbiologic procedures and scanning electron microscopy (SEM) analysis. Results: The numbers of S. mutans cfu in the saliva and biofilm were not statistically different between the teeth fitted with elastomeric rings and stainless steel ligatures, or between the experimental and control groups. SEM analysis showed biofilm formation on both ligature ties. Conclusions: Topical application of 0.4% SFG in orthodontic patients with elastomeric rings or stainless steel ligatures does not cause a significant decrease in S. mutans cfu in the saliva and biofilm. Copyright © 2005 by the American Association of Orthodontists.
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elastomer, stainless steel, stannous fluoride, adolescent, bacterial count, bacterium detection, biofilm, clinical article, colony forming unit, controlled study, female, gel, human, intermethod comparison, ligation, male, microbiology, orthodontic device, orthodontics, saliva analysis, sample size, scanning electron microscopy, school child, statistical significance, Streptococcus mutans, time series analysis, tooth arch, Adolescent, Analysis of Variance, Biofilms, Cariostatic Agents, Child, Colony Count, Microbial, Dental Plaque, Elastomers, Female, Gels, Humans, Male, Microscopy, Electron, Scanning, Orthodontic Appliances, Orthodontic Wires, Saliva, Tin Fluorides
Como citar
American Journal of Orthodontics and Dentofacial Orthopedics, v. 127, n. 4, p. 428-433, 2005.