|
|
|
 |
Search published articles |
 |
|
Showing 2 results for Environmental Factors
Farnaz Jafari, Mir Jafar Sadjadi Askouee, Sanaz Jafari, Mohsen Talebi,
Volume 25, Issue 4 (11-2017)
Abstract
Introduction: DMFT (Decay-missing-filled teeth index) and dmft (the equivalent of DMFT index for deciduous teeth) indexes are dental epidemiological indicators showing the status of oral health in the population. This study evaluated the DMFT index of 6, 9 and 12-year-old students in Hashtrood city in 2013.
Materials & methods: The present descriptive-analytical study using interview, examination and recording of information, in the study population included students aged 6, 9 and 12 -year-old conducted in Hashtrood city. Gender, parents’ income, toothbrushing frequency and carbohydrates intake frequency were recorded. Data analysis was done using SPSS 18.
Findings: The average DMFT index of 6 years old children was 0.13 ± 0.78, for 9 years old children was 2.86±1.39 and for 12 years old children was 4±2.17. The average dmft index of 6 years old children was 4±2.57, for 9 years old children was 3.83±2.36 and for 12 years children was 0.483±1.26. The analysis of Kruskai Wallisfound, significant differences between the amount of dmft and DMFT indexes of students based on brushing frequency and carbohydrate consumption (p <0.05). However, no significant association was found between gender and amount of family income
.
Discussion & conclusions: DMFT and dmft indexes of students of Hashtrood city according to WHO goals were not in good condition.
Mohamad Ahim Forouzeh, Abolfazl Sharifian, Hasan Yeganeh, Hoda Shahiri Tabarestani,
Volume 30, Issue 4 (10-2022)
Abstract
Introduction: Tussilago farfara L. is a perennial forb belonging to the Asteraceae family. The leaves and flowers of this plant have medicinal properties, and its essential oil has been used for the treatment of dry coughs and inflammation of the mouth, throat, and respiratory tract. This study aimed to assess some phytochemical characteristics of Tussilago farfara L. and compare changes in this plant at different altitudes.
Material & Methods: To investigate the changes in the amount of the effective substance of the studied plant in the altitude gradient, altitude classes of 1100-2600 meters were considered in Golestan province, Iran, considering the presence and abundance of the species. In each phenological stage (before and after flowering time), plant samples were randomly collected in each altitude class and transferred to the laboratory. Total phenol content and flavonoid content were measured using the Folin-Ciocalteu and aluminum chloride methods, respectively. The antioxidant activity of the methanolic extract was also evaluated using the DPPH (2,2-Diphenyl-1-picrylhydrazyl) reagent.
Findings: The results showed that the highest amounts of total phenol content, flavonoids, and antioxidant activity were observed at altitudes above 2200 meters, and there was a significant difference in plants (Tussilago farfara L.) grown in different altitudes in terms of phytochemical properties. Based on the comparison of phytochemical properties of this plant in different phenological stages, the highest content of total phenol and flavonoids were observed in the phonological stage of flowering and the highest (42.08%) antioxidant activity of leaves was observed in the vegetative stage.
Discussion & Conclusion: The results of this study can help activists in the field of medicinal plants to determine the appropriate height range and phenological stage in harvesting the leaves of this plant to achieve the highest levels of phenol content, flavonoids, and antioxidant activity.
|
|
