ABSTRACT
AIM: This study was aimed to evaluate effects of various beverages on microhardness of esthetic restorative materials. MATERIALS AND METHODS: A total of 160 disk-like specimens were prepared with 40 specimens each using nanocomposite resin, nano-ionomer, compomer, and conventional composite resin as experimental groups. Forty primary teeth were prepared and mounted in acrylic to be used as control group. Microhardness of the restorative materials was measured using Vickers microhardness tester at baseline and after immersion in various beverages. The difference between the two readings was evaluated within different groups. RESULTS: In general, low pH beverages adversely affected the properties of the tested materials. Microhardness of tested materials was significantly decreased after immersion in various beverages with the exception of Yakult. After the immersion period, the enamel showed the maximum loss in microhardness followed by nano-ionomer. CONCLUSION: Low pH beverages were the most aggressive media for enamel, nano-ionomer and compomer, but in contrast, composite resin was relatively less affected. Probiotic drink appeared relatively benign toward the tested materials.How to cite this article: Gupta R, Madan M, Dua P, Saini S, Mangla R, Kainthla T, Dupper A. Comparative Evaluation of Microhardness by Common Drinks on Esthetic Restorative Materials and Enamel: An in vitro Study. Int J Clin Pediatr Dent 2018;11(3):155-160.
ABSTRACT
AIM: To validate the caries risk profiles in 5- and 12-year-old school-going children and to single out main contributing factor, if any, using cariogram over a period of 1 year. MATERIALS AND METHODS: A cariogram model was used to create caries risk profiles on 499 children aged 5 and 12 years ±6 months. They were divided into 2 groups. The group I and group II consisted of 250 and 249 children respectively. Re-examination was done after 1 year and caries increment was recorded. The caries risk profiles generated by the cariogram software were compared with caries increment. RESULTS: Percentage of subject having caries increment in groups I and II in high-, medium-, and low-risk group after 1 year was 66.2, 39.5, and 13%, and 48.5, 27.3, and 13.9% respectively. The mean caries increment after 1 year in groups I and II in high-, medium-, and low-risk patients was 0.96, 0.49, and 0.13, and 0.7, 0.36, and 0.11 respectively. Linear regression analysis showed dental caries, diet content, diet frequency, plaque index, Streptococcus mutans count, fluoride, salivary flow rate, and buffer capacity are significantly associated with actual chance to avoid caries. CONCLUSION: The risk of developing new carious lesions consistently reduced from high-risk category to low-risk category, reflecting the cariogram ability in accurately estimating future caries. Hence, cariogram can be said to be a useful tool for caries prediction. Initial dental caries came out to be the strongest predictor of future caries.How to cite this article: Garg A, Madan M, Dua P, Saini S, Mangla R, Singhal P, Dupper A. Validating the Usage of Car-iogram in 5- and 12-year-old School-going Children in Paonta Sahib, Himachal Pradesh, India: A 12-month Prospective Study. Int J Clin Pediatr Dent 2018;11(2):110-115.
ABSTRACT
BACKGROUND: Successful endodontic treatment depends on effective disinfection and complete sealing of root canal. Various medicaments are advised for disinfecting root canal, such as herbal and non-herbal medicaments. This study was done to assess the antimicrobial activity of herbal medicines (neem extract, tulsi extract) and chlorhexidine against Enterococcus faecalis in Endodontics. MATERIALS AND METHODS: Agar diffusion method was used to evaluate the antimicrobial action of different medicines. Sixty samples were segregated into four groups with 15 samples in each: Group I: chlorhexidine 2%, Group II: neem extract, Group III: tulsi extract, and Group IV: distilled water. The inhibition zones against E. faecalis were recorded and statistically assessed using one-way analysis of variance (ANOVA) test (P < 0.05). RESULTS: Significant antibacterial effect against E. faecalis was observed with chlorhexidine followed by neem extract and tulsi extract. CONCLUSION: Herbal medicines seemed to be effective against E. faecalis compared to 2% chlorhexidine gluconate.
