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Showing 6 results for Karimi
In vitro evaluation of antibacterial activity of hydroalcoholic extract of Salvia officinalis and Pimpinella anisum against cariogenic bacteria
H. Kermanshah, S. Hashemi Kamangar, S. Arami, A. Mirsalehian, M. Kamalinejad, M. Karimi, F. Jabalamoli,
Volume 22, Issue 2 (20 2009)
Abstract

Background and Aim: The microbial cause of dental caries has been proved among its multifactorial etiologies. The prevention and control of dental caries is very critical because of high prevalence and cost especially in high risk patient such as xerostomia. Based on the world attraction to traditional treatment and importance of drug extraction of natural materials and plants, in this in vitro study effect of hydroalcoholic extract of Salvia officinalis and Pimpinella anisum which were very useful in traditional treatment of mouth and teeth disease has been determined against cariogenic bacteria.

Materials and Methods: In this experimental study, hydroalcoholic extracts have been prepared from Salvia officinalis and Pimpinella anisum with maceration method. Their antibacterial activity against Streptococcus mutans, Lactobacillus rhamnosus and Actinomyces viscosus have been evaluated with broth macrodilution method. Data were analyzed with Mann-Whitney test.

Results: Minimum Inhibitory Concentration for Salvia officinalis and Pimpinella anisum for streptococcus mutans were respectively 6.25 and 12.5 µg/ml, for Lactobacillus rhamnosus were 1.56 and 12.5 µg/ml and for Actinomyces viscosus were 12.5 and 50 µg/ml.

Conclusion:Both extracts had growth inhibitory effect on all three bacteria. Salvia officinalis had significantly greater effect on inhibition of growth of all three bacteria. Both extracts had bactericidal effect in the range of concentration.


A comparison between video tape and live demonstration methods for teaching of fissure sealant placement procedures for dental students of Zahedan University of Medical Sciences in 2010-2011
Mahkame Mirkarimi, Fateme Arbabi Kalati, Alireza Ansari Moghadam,
Volume 24, Issue 4 (28 2012)
Abstract

Background and Aims: Teaching of clinical skills is one of the most important aspects in training medical students. The aim of this study was to compare the effectiveness of videotaped and live demonstrations for applying fissure sealant on permanent molar teeth at Zahedan University of Medical Sciences (2010-2011).

Materials and Methods: Thirty 8th-semester dental students were randomly assigned in two groups (n = 15). In group 1, fissure sealant placement was taught using live demonstration while, in group 2, education was performed by videotaped demonstration. Then, each student applied fissure sealant on the patient's permanent molar tooth. The procedure of fissure sealant placement was assessed and scored by a pedodontist. The students were subsequently asked to rate how helpful the videotape or live demonstration had been. The data were analyzed using T-test and Chi-square test.

Results: The mean students' scores for videotaped and live demonstration were 16.5 and 16.53, respectively. There was no significant difference between the teaching methods according to students' scores (P>0.05). 33% of students rated videotaped demonstration as "good" for its helpfulness and 66% as "very good". However, live demonstration was rated as "good" and "very good" by 66% and 33% of students, respectively. There was no significant difference between two groups (P>0.05).

Conclusion: Both teaching methods were equally effective. Therefore, videotaped demonstration can be used in combination with live demonstration or as an alternative for it.


Effect of Acidulated Phosphate Fluoride (APF) on the mcroleakage of composite flow and fssure sealant restorations
Mitra Tabari, Hengame Saffarcherati, Vahid Soltankarimi, Zahra Bani Ameri, Arash Poorsattar Bejeh Mir,
Volume 24, Issue 4 (28 2012)
Abstract

Background and Aims: A large number of investigations have revealed that physical and chemical alterations and weight loss could occur in composite materials exposed to acidic phosphate fluoride (APF) gel. The purpose of this study was to assess the microleakage of a fissure sealant and a flow composite exposed to acidulated phosphate fluoride (APF) gel.

Materials and Methods: In this in vitro study, 60 intact human extracted premolar teeth were used. After preparing the occlusal groove, the teeth were divided into two groups (n=30). Teeth were filled with either Helioseal fissure sealant (Vivadent, Germany) or Tetric flow composite (Vivadent, Germany). After that, each group was divided into two subgroups (n=15): 1.23% APF gel (Sultan, U.S.A) was applied in the case subgroups, while control subgroups were preserved in normal saline solution. All of teeth were covered with 2 layers of nail varnish except for the filling zone and 1mm around the border of filling. After submerging in 0.5% fushin solution, specimens were sectioned bucco-lingually. Then dye penetration through the filling and fissure sealant was assessed by means of a stereo-microscope. The depth of dye penetration was scored. The data were analyzed using One-way ANOVA and Levene test.

Results: The mean values of dye penetration were 1.26±1.09, 1.4±1.05, 1.2±1.37, and 1.4±1.35 for fissure sealant+gel, composite+gel, composite+normal saline, and normal saline groups, respectively. No significant difference was found in inter-groups (P=0.96).

Conclusion: Considering the result of the present research, APF gel had no significant effect on the microleakage of Tetric flow composite filling and Helioseal fissure sealant and thus, it can be applied for routine usage.


Evaluation of senior dental students, knowledge at universities in Tehran regarding cardiopulmonary resuscitation in patients with an urgent situation
Hamid Mahmoodhashemi, Abbas Karimi, Parisa Bagheri, Narges Hajiani,
Volume 32, Issue 2 (10-2019)
Abstract

Background and Aims: Management of an emergency is ultimately the dentist’s responsibility. Therefore, the dentists need to be able to manage an emergency and perform Cardiopulmonary Resuscitation (CPR) if necessary. The present study was undertaken to assess the knowledge of final-year dental students in Tehran regarding CPR.
Materials and Methods: In a cross-sectional study, 200 final-year dental students (44 males and 156 females) from 4 dental schools in Tehran were randomly selected and surveyed using a multiple choice questionnaire evaluating their knowledge about CPR. The data were analyzed by SPSS16 software using two descriptive and inferential statistical methods via chart drawing of statistical quantities calculation and analysis of variance.
Results: The mean score was 5.43±2.43. A positive correlation was found between receiving practical training and level of knowledge (P=0.001). However, the results showed no statistical differences between sex (P=0.409) or various dental schools (P=0.089).
Conclusion: Since, the level of knowledge about CPR among participants were poor, there is a perceived need for further training in dental schools.

Comparison of antibacterial effect of Scrophularia Striata extract, sodium hypochlorite and chlorhexidine on Enterococcus faecalis in tooth root canals
Mohammad Fazeli, Masomeh Ahmadi, Parisa Asadollahi, Hossein Seyedkhani, Elahe Karimi, Liela Ghitani, Nahid Mahdian, Dr Hossein Kazemian,
Volume 36, Issue 0 (5-2023)
Abstract
Background and Aims: Root canal treatment failures are often attributed to incomplete removal of bacteria, particularly Enterococcus faecalis. While, chlorhexidine and sodium hypochlorite serve as conventional treatments. herbal medicine has been today considered as an alternative to synthetic medicine due to its safety. Therefore, the aim of the present study was to compare the antibactrial effect of Scrophularia Striata extract with chlorhexidine and sodium hypochlorite on Enterococcus Faecalis in the tooth root canal.
Materials and Methods: In this study, sixty extracted teeth were examined. Following the infection of dental canals with Enterococcus faecalis, materials were tested in 3 groups: 1) chlorhexidine 2% (18 teeth), 2) sodium hypochlorite 2.5% (18 teeth), and 3) Scrophularia striata (at the concentration obtained from MIC, 20%; 18 teeth). Additionally, the positive control and negative control were included (3 teeth in each group). Samples were then cultured on bile esculin agar. After 72 hours, black colonies were eaxamined. Chi-squared test was used to analyze the results.
Results: Enterococcus faecalis bacteria grew in 6, 8, and 17 out of the 18 teeth within the sodium hypochlorite, chlorhexidine, and Scrophularia striata extract groups, respectively. Consequently, the bactericidal effects for sodium hypochlorite, chlorhexidine, and Scrophularia striata extract were 66.6%, 55.5%, and 5.55%, respectively.		 
Conclusion: The antibacterial effect of the Scrophularia striata extract was significantly lower than chlorhexidine and sodium hypochlorite on Enterococcus faecalis in dental canals viewed as a suitable replacement to the already in use synthetic therapeutic irrigants.

Comparison of vitamin D3 serum levels in patients with oral lichen planus and healthy individuals
Seyed Javad Kia, Mohammad Samami, Negin Sheykhlari, Fereshteh Najar Karimi,
Volume 36, Issue 0 (5-2023)
Abstract
Background and Aims: Considering the regulatory role of vitamin D3 in the immune system, this vitamin may be able to prevent autoimmune diseases by modulating the immune system, so this study was conducted with the aim of comparison of the serum level of vitamin D3 in patients with oral lichen planus and healthy persons.
Materials and Methods: In this case-control study, the serum vitamin D3 level of 80 people, including 40 patients referred to Guilan dental school who were suffering from oral lichen planus and 40 healthy individuals referred to the laboratory for routine check-up, after matching for age and gender, was investigated. Data based on the type of variable were analyzed using independent t-tests, Mann-Whitney, Chi-square test, and Fisher's exact test using SPSS26 software at a significance level of 0.05.
Results: In this study, 80 person participated, including 29 women (72.5%) and 11 men (27.5%) in each of two groups of patients with an average age of 52.17 ± 12.12 years and healthy people with an average age of 52.10 ± 12.23 years. The average serum level of vitamin D3 in the control group was significantly higher than the case group (P=0.006). There was no statistically significant relationship between the vitamin D3 serum level and different types of oral lichen planus, gender, duration of disease, and age.
Conclusion: Considering the significant lower mean serum level of vitamin D3 in people with oral lichen planus; vitamin D3 may be effective as a supplement in the healing process of patients' lesions.

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