Salivary microbial and nonmicrobial parameters in children with fixed orthodontic appliances

Author:

Peros Kristina1,Mestrovic Senka2,Anic-Milosevic Sandra3,Slaj Mladen4

Affiliation:

1. Research Fellow, Department of Pharmacology, School of Dental Medicine, University of Zagreb, Zagreb, Croatia

2. Professor, Department of Orthodontics, School of Dental Medicine, University of Zagreb, Zagreb, Croatia

3. Assistant Professor, Department of Orthodontics, School of Dental Medicine, University of Zagreb, Zagreb, Croatia

4. Professor and Department Chair, Department of Orthodontics, School of Dental Medicine, University of Zagreb, Zagreb, Croatia

Abstract

Abstract Objective: To determine the physiologic changes of salivary flow rate, pH, and buffer capacity and the levels of Streptococcus mutans and Lactobacillus spp in patients undergoing fixed orthodontic treatment. Materials and Methods: The study included 23 patients scheduled for fixed orthodontic therapy. All subjects received equal braces, bands, and brackets, bonded with the same material. Stimulated saliva samples were taken before placement of the appliance, and at weeks 6, 12, and 18 during the therapy. Salivary flow rate and salivary pH were measured, and the salivary buffer capacity was determined. Saliva samples were cultivated on selective microbial agar for microorganism detection. Results: A significant (P < .05) increase in stimulated salivary flow rate and salivary pH was found. The salivary levels of S mutans and Lactobacillus spp also inscreased significantly (P < .05), and the major peak was at week 12 of fixed orthodontic therapy. Conclusion: The 6th to 12th week of orthodontic therapy is the period of the most intensive intraoral growth of S mutans and Lactobacillus spp and a time of very intensive salivary functions and physiologic response.

Publisher

The Angle Orthodontist (EH Angle Education & Research Foundation)

Subject

Orthodontics

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