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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| Authors: | Sabryna Maria Brêtas Soraia Macari Ana Maria Elias Izabel Yoko Ito Mírian Aiko Nakane Matsumoto |
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| Affiliation: | 1. Orthodontic specialist, Department of Pediatric Dentistry, Faculty of Dentistry of Ribeirão Preto, University of São Paulo.;2. Orthodontics postgraduate student, Department of Orthodontics, Faculty of Dentistry of Rio de Janeiro, University of the State of Rio de Janeiro.;3. Faculty of Science and Letters of Araraquara/Araraquara Campus, University of the State of São Paulo.;4. Professor of Microbiology, Department of Clinical Analysis, Toxicology and Bromatology, Faculty of Pharmaceutical Science of Ribeirão Preto, University of São Paulo.;5. Professor of Orthodontics, Department of Pediatric Dentistry, Faculty of Dentistry of Ribeirão Preto, University of São Paulo.;1. Commanding Officer, Military Dental Centre, Jabalpur 482001, India;2. DGDS & Colonel Commandant, O/o DGDS, Adjutant General’s Branch, IHQ, MoD, L Block, New Delhi 110001, India;3. Commandant, AFDC, New Delhi 110010, India;4. Commanding Officer, 14 Corps Dental Unit, C/o 56 APO, India;5. Graded Specialist (Prosthodontics), Military Dental Centre, Ambala Cantt, India;1. Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, China;2. Department of Preventive Dentistry, College of Stomatology, Xi’an Jiaotong University, Xi’an, China;3. Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi’an Jiaotong University, China;4. Department of Stomatology, Xi’an Medical University, Xi’an, China;5. Center for Craniofacial Molecular Biology, Herman Ostrow School of Dentistry of USC, CSA142, Health Sciences Campus, University of Southern California, Los Angeles, CA, USA;1. Oral and Biomedical Sciences Research Unit, Faculty of Dentistry, University of Lisbon, Lisboa, Portugal;2. Centro de Física Atómica, Av. Professor Gama Pinto, 2, 1649-003 Lisboa, Portugal;3. Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Portugal |
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| Abstract: | ![]()
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. |
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