RESUMO
Herbal extracts have evoked interest owing to the small number of terpenoids and phenolic compounds, which impart antimicrobial, antioxidant, and anti-inflammatory properties. The minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC), and minimum fungicidal concentration (MFC) of four herbal extracts (lemon grass oil, basil oil, peppermint oil, and Obicure tea extract) against endodontic pathogens along with the MIC: MBC/MFC ratio were evaluated. The antimicrobial activity by detecting the MIC of three essential oils and tea extract was evaluated against eight common endodontic pathogens by the broth dilution method, while MBC was detected by subculturing onto blood agar from the first -three to five tubes from the MIC dilution tubes (showing no turbidity), which were plated on blood agar. All herbal extracts proved to be effective antimicrobials against tested endodontic pathogens. Basil oil had a bacteriostatic effect on all the organisms (P < 0.05). Mint oil showed bacteriostatic activity on Enterococcus (E.) faecalis and Peptostreptococcus (P > 0.05). Tea extract had a bacteriostatic effect (P > 0.05) against all tested microbes except Actinomyces, Lactobacilli, Staphylococcus (S.) aureus, and Fusobacterium (F.) nucleatum. Lemon grass oil had a bactericidal effect against all the organisms and a bacteriostatic effect against Peptostreptococcus (P > 0.05). It can be concluded that basil oil showed a strong bactericidal effect on the test organisms. The MIC for the organisms ranged from 0.2 to 50 µg/ml.
RESUMO
AIMS AND OBJECTIVES: To assess the effect of presurgical nasoalveolar molding (PNAM) therapy in the management of patients with nonsyndromic unilateral cleft lip and palate (UCLP). MATERIAL AND METHOD: Ten patients with UCLP treated from 2009 to 2012. The initiation for PNAM treatment was 7 days and the average time of the treatment was 175 days. Measurements on patients and of casts were made, and statistical analysis was used to evaluate the changes in pre- and posttreatment measurements. RESULTS: Subsequent to PNAM treatment, there was a statistically considerable rise in cleft nostril height and columellar width. There was reduction in both intraoral cleft width and columellar deviation, which was significant statistically. CONCLUSION: PNAM treatment reduces alveolar cleft width. It enhances symmetry of the nose by changing columellar angulation, preserving alar width bilaterally, gaining height of the nostril on the affected side, and increasing columellar length.
RESUMO
BACKGROUND: This study aimed to evaluate the microleakage, when flowable composite is used as a restorative material and a liner. MATERIALS AND METHODS: Forty, non-carious, extracted human premolar teeth were used and they were divided into five groups according to the type of composite material used. Group I: Hybrid composite was inserted and cured for 40 s. Group II: Flowable resin composite which was cured for 40 s. Group III: A thin layer of flowable composite was used to line the axial wall of cavity, over that hybrid composite was inserted and cured for 40 s. Group IV: A thin layer of flowable composite was lined on the axial wall of cavity; over that a packable composite was inserted and cured for 40 s. Group V: Group V was a control group. These cavities were not etched and bonded. They were restored with resin modified glass ionomer cement. After thermocycling and dye immersion, each tooth sectioned longitudinally. Each restoration was observed under a binocular stereomicroscope with magnifying loop of ×12 for microleakage. RESULTS: The results of the study indicate that there was minimum leakage at the enamel margin of all groups. In every group, the leakage at the dentin margin was more than that at the enamel margin. The difference was statistically significant in hybrid and flowable composite (P values are 0.29 and 0.289, respectively). CONCLUSION: Similar leakage values were shown by Groups I and II, indicating that flowable and hybrid composites performed equally well in terms of microleakage. The use of flowable composite as a liner under hybrid and packable composite have shown a trend toward less leakage compared to hybrid and flowable composite alone. How to cite the article: Lokhande NA, Padmai AS, Rathore VP, Shingane S, Jayashankar DN, Sharma U. Effectiveness of flowable resin composite in reducing microleakage - An in vitro Study. J Int Oral Health 2014;6(3):111-4.
