Clinical and microbiological parameters in patients with self-ligating and conventional brackets during early phase of orthodontic treatment |
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Authors: | Slavica Pejda Marina Lapter Varga Sandra Anic Milosevic Senka Mestrovic Martina Slaj Dario Repic Andrija Bosnjak |
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Affiliation: | aResident, School of Medicine, University of Split, Split, Croatia. ; bProfessor, Department of Orthodontics, School of Dental Medicine, University of Zagreb, Zagreb, Croatia. ; cAssistant Professor, Department of Orthodontics, School of Dental Medicine, University of Zagreb, Zagreb, Croatia. ; dProfessor, School of Medicine, University of Split, Soltanska 2, 21 000 Split, Croatia. |
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Abstract: | Objective:To determine the effect of different bracket designs (conventional brackets and self-ligating brackets) on periodontal clinical parameters and periodontal pathogens in subgingival plaque.Material and Methods:The following inclusion criteria were used: requirement of orthodontic treatment plan starting with alignment and leveling, good general health, healthy periodontium, no antibiotic therapy in the previous 6 months before the beginning of the study, and no smoking. The study sample totaled 38 patients (13 male, 25 female; mean age, 14.6 ± 2.0 years). Patients were divided into two groups with random distribution of brackets. Recording of clinical parameters was done before the placement of the orthodontic appliance (T0) and at 6 weeks (T1), 12 weeks (T2), and 18 weeks (T3) after full bonding of orthodontic appliances. Periodontal pathogens of subgingival microflora were detected at T3 using a commercially available polymerase chain reaction test (micro-Dent test) that contains probes for Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Prevotella intermedia, Tannerella forsythia, and Treponema denticola.Results:There was a statistically significant higher prevalence of A actinomycetemcomitans in patients with conventional brackets than in patients with self-ligating brackets, but there was no statistically significant difference for other putative periodontal pathogens. The two different types of brackets did not show statistically significant differences in periodontal clinical parameters.Conclusion:Bracket design does not seem to have a strong influence on periodontal clinical parameters and periodontal pathogens in subgingival plaque. The correlation between some periodontal pathogens and clinical periodontal parameters was weak. |
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Keywords: | Self-ligating brackets Periodontal pathogens |
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