The toothbrush tree Salvadora persica L, also called miswak, belonging to the family Salvadoraceae, is one of the most important of the 182 plant species used as chewing sticks. It is widely used in many Asian, African and Middle Eastern countries. The roots, branches and stems of this plant have been used for oral hygiene and small miswak sticks have been used as toothpicks for oral hygiene. In this study, commercially purchased Salvadora persica, L. (Miswak) plant used in oral hygiene were tested against seven pathogenic bacteria (Bacillus cereus ATCC 10987, Bacillus subtilis ATCC 6623, Staphylococcus aureus ATCC 25923, Enterococcus faecalis ATCC 29212, Escherichia coli ATCC 25922, Klebsiella pneumoniae ATCC 70060, Pseudomonas aeruginosa ATCC 27853) and two fungi (Candida albicans ATCC 10231 and Aspergillus niger ATCC 16404) at eight different concentrations (200 mg/ml, 100 mg/ml, 50 mg/ml, 25 mg/ml, 12. 5 mg/ml, 6 mg/ml, 3 mg/ml and 1 mg/ml) were determined. While the aqueous extract did not show any antimicrobial activity against seven pathogens, the methanol extract showed activity against three pathogens. The methanol extract of S. persica showed antimicrobial activity against Bacillus cereus ATCC 10987, Bacillus subtilis ATCC 6623 and Klebsiella pneumoniae ATCC 70060 strains.

Fingerprints are the most important evidence that allows the criminal to be profiled in a crime scene investigation. A fingerprint is considered evidence due to its unique characteristics. Fingerprints are not visible and therefore need to be visualized after being recovered from the scene. Many methods are used for visualization purposes. The most commonly used methods are dusting, Ninhydrin, DFO, Super Glue, etc. the methods are not. In addition to these methods, other chemicals, physical and optical methods have recently been uncovered. Due to technological developments affecting the field of Forensic Sciences, new dimensions have also been introduced to fingerprint studies. The use of nanoparticles has gained momentum, especially in fingerprint visualization studies. In the use of nanoparticles, silica nanoparticles are used in studies. Objective: this study, it was aimed to determine the level of use of silica nanoparticles in fingerprint visualization studies. Based on the data obtained for this purpose, which silica nanoparticle is most used, which method is most used in silica nanoparticle synthesis, what are the dimensions of the resulting molecules, which technique is most preferred for visualization, etc. it is aimed to provide researchers with up-to-date information by determining the parameters? Method: In this study, the systematic literature review was preferred to collect research data. The level of use of silica nanoparticles has been investigated in fingerprint visualization studies between 2016 and 2020. Data collection was obtained through scientific studies. Parameters such as silica nanoparticle molecules, synthesis methods, absorbent values, surface types used, imaging types were compared in the obtained publications.