Impact of Treatment with Full-fixed Orthodontic Appliances on the Periodontium and the Composition of the Subgingival Microbiota.

AIMS: The purpose of this study was to evaluate the impact of fullfixed orthodontic appliances on the periodontium in adult patients. METHODS: Seventeen periodontally and systemically healthy subjects were selected from the Periodontal Clinic of Guarulhos University, 7 males and 10 females (mean age: 38.3 ± 6.3 years). The patients undergoing orthodontic treatment were submitted a clinical examination, a cone beam computed tomography at baseline and after 12 months of treatment. Subgingival biofilm samples were analyzed by Checkerboard DNA-DNA hybridization. Statistical analysis was performed by a Wilcoxon test. RESULTS: The percentage of sites with visible plaque increased (p =0.003), but no significant reduction in marginal bone was observed. The mean periodontal pocket depth was reduced (p=0.001) and the clinical attachment level significantly improved (p =0.001). There was a significant reduction in the mean proportions of the Actinomyces sp and an increase in the orange complex species. The proportions of the red complex species remained unchanged. CONCLUSIONS: In spite of increase in plaque accumulation no significant clinical or tomographic iatrogenic changes in periodontally healthy adults undergoing orthodontic full-fixed appliance treatment could be detected. The microbiological changes did not affect the periodontal parameters in monitored adult patients that received short period of orthodontic treatment.

Association of Breastfeeding Duration, Nonnutritive Sucking Habits, and Malocclusion.

AIM: This study aimed to investigate the associations between breastfeeding, nonnutritive sucking habits (NNSHs), and malocclusion in deciduous, mixed, and permanent dentition. MATERIALS AND METHODS: A sample of 50 children between 3 and 12 years, enrolled in a pediatric dentistry dental care program, underwent orthodontic examination for detection of occlusal patterns and malocclusion. In addition, data regarding breastfeeding duration and NNSH acquisition were obtained from standardized questionnaires responded by the children's parents or legal guardians. RESULTS: Regardless of a long period of breastfeeding, a high incidence of NNSH in the evaluated sample was observed. Nevertheless, the presence of NNSHs was not significantly associated with malocclusion. CONCLUSION: The findings could not indicate a statistically significant association between breastfeeding duration, acquisition of NNSHs, and malocclusion. Longitudinal studies with larger samples are still needed to better support clinical decisions.How to cite this article: Roscoe MG, da Silva Bonifacio SV, da Silva TB, Pingueiro JMS, Lemos MM, Feres MFN. Association of Breastfeeding Duration, Nonnutritive Sucking Habits, and Malocclusion. Int J Clin Pediatr Dent 2018;11(1):18-22.