Antimicrobial Efficacy of Glass Ionomer Cement in Incorporation with Biogenic Zingiber officinale Capped Silver-Nanobiotic, Chlorhexidine Diacetate and Lyophilized Miswak

In the present study, Zingiber officinale is used for the synthesis of Zingiber officinale capped silver nanoparticles (ZOE-AgNPs) and compares the antimicrobial efficacy and compressive strength of conventional glass ionomer cement (GIC) combined with ZOE-AgNPs, lyophilized miswak, and chlorhexidine diacetate (CHX) against oral microbes. Five groups of the disc-shaped GIC specimens were prepared. Group A: lyophilized miswak and GIC combination, Group B: ZOE-AgNPs and GIC combinations, Group C: CHX and GIC combination, Group D: ZOE-AgNPs + CHX + GIC; Group E: Conventional GIC. Results confirmed the successful formation of ZOE-AgNPs that was monitored by UV-Vis sharp absorption spectra at 415 nm. The X-ray diffractometer (XRD) and transmission electron microscope (TEM) results revealed the formation of ZOE-AgNPs with a mean size 10.5–14.12 nm. The peaks of the Fourier transform infrared spectroscopy (FTIR) were appearing the involvement of ZOE components onto the surface of ZOE-AgNPs which played as bioreducing, and stabilizing agents. At a 24-h, one-week and three-week intervals, Group D showed the significantly highest mean inhibitory zones compared to Group A, Group B, and Group C. At microbe-level comparison, Streptococcus mutans and Staphylococcus aureus were inhibited significantly by all the specimens tested except group E when compared to Candida albicans. Group D specimens showed slightly higher (45.8 ± 5.4) mean compressive strength in comparison with other groups. The combination of GIC with ZOE-AgNPs and chlorhexidine together enhanced its antimicrobial efficacy and compressive strength compared to GIC with ZOE-AgNPs or lyophilized miswak or chlorhexidine combination alone. The present study revealed that The combination of GIC with active components of ZOE-AgNPs and chlorhexidine paves the way to lead its effective nano-dental materials applications.

Influence of noncovalent intramolecular and host-guest interactions on imatinib binding to MoS2 sheets: a PXRD/DFT study

The structural and energetic aspects of bonding interaction between the molecule of antileukemic drug imatinib and the sheet of nanodispersed molybdenum disulfide noted for its excellent photothermal and antimicrobial efficacy...

Simulation of inference test performance for minimum inhibitory concentration censored data

The estimation of the minimum inhibitory concentration is usually performed by a method of serial dilutions by a factor of 2, introducing the overestimation of antimicrobial efficacy, quantified by a simulation model that shows that the variability of the bias is higher for the standard deviation, being dependent on the metric distance to the values of the concentrations used. We use a methodological approach through modeling and simulation for the measurement error of physical variables with censored information, proposing a new inference method based on the calculation of the exact probability for the set of possible samples from nmeasurements that allows quantifying the p-value in one or two independent sample tests for the comparison of censored data means. Tests based on exact probability methods offer a reasonable solution for small sample sizes, with statistical power varying according to the hypothesis evaluated, providing insight into the limitations of censored data analysis and providing a tool for decision making in the diagnosis of antimicrobial efficacy.

Evaluation of Antimicrobial Efficacy of Triphala Oral Spray in Patients Undergoing Orthodontic Treatment- A Randomized Clinical Trial

Background: Malocclusion is one of the most susceptible causes of the development of periodontal diseases and dental caries in young individuals undergoing fixed orthodontic treatment. It provides a surface area for the accumulation of food particles, which further leads to plaque formation. Various mechanical and chemical aids are used regularly to decrease the microbial load and accumulation of plaque. Chemical adjuncts such as chlorhexidine mouthwash are widely used as antimicrobial agents that have significant efficacy against oral Streptococci and Actinomyces species. Herbal agents have replaced conventional medications due to the development of antibiotic resistance. Among herbal medicaments, Triphala is the well-known drug formulation that can be used as an adjuvant for commercially available chemical aid. Chlorhexidine mouth wash requires the assistance of the caregivers. Therefore, there is a need for a newer modality to maintain oral hygiene in patients undertaking orthodontic corrections. Objectives: 1. To evaluate the antimicrobial efficacy of Triphala oral spray on Streptococcus mutants levels in children undergoing orthodontic treatment. 2. To evaluate the efficacy of Triphala oral spray in reducing dental plaque in children undergoing orthodontic treatment. 3. To evaluate the efficacy of Triphala oral spray reducing gingivitis in children undergoing orthodontic treatment. Methodology: A randomized control trial will be done among – participants with the age group of 10 to 15 years of age. A total of 25 children were included in the study. The participants will be told to use the spray two times a day for one week. After 7 days, plaque index and the gingival index will be re-recorded, and plaque samples will be collected for post-intervention microbial analysis. Results: Triphala-based oral spray will effectively reduce plaque score, reduce gingival inflammation, and show inhibitory effects on microbial count. Conclusion: Triphala oral spray can be used as an adjuvant by the orthodontic patients for reduction of the microbial load. It also provides better acceptability by the children as it does not require any assistance of the caregivers.