Showing 9 results for Mina
Mohamadreza Khami, Arezo Ebne Ahmadi, Mina Ahmadian, Samaneh Razeghi, Reza Yazdani,
Volume 27, Issue 3 (9-2014)
Abstract
Background and Aims: Tobacco kills 5 million people worldwide annually, according to the Health Ministry reaches this number is about 70,000 people a year in Iran. Dental professionals are in a unique position to promote smoking cessation due to the opportunity for regular interaction with their patients. The aim of this study was to investigate knowledge, attitudes, and skills of dental students at Tehran and Shahid Beheshti dental schools towards tobacco cessation counseling in dental office.
Materials and Methods: In this cross-sectional study, the target group was dental students at Tehran and Shahid Beheshti dental schools, and the sampling method was census. A questionnaire on the knowledge, attitudes, and skills towards tobacco cessation counseling in dental practice was administered to the students (n=93). Data were analyzed using T-test.
Results: The response rate was 100% (93 students participate in this program and all of them filled the questionnaire). The average score of knowledge at Tehran and Shahid Beheshti dental schools was 17.5 and 18.4, respectively (P=0.09), the average score of attitudes was 33.5 and 33.1, respectively (P=0.80). There were no significant differences between the two dental schools in these parts. The average score of skill was 11.9 and 16.6, respectively. The differences between the students of two dental schools in skill were significant (P=0.002).
Conclusion: Although the attitude of dental students at Tehran and Shahid Beheshti schools towards tobacco cessation counseling seemed to be fair, some deficiencies existed in their knowledge and skill. Dental education programs should be implemented properly in this field.
Mehryari Mahsa , Mortazavi Nazanin , Sayyadi Fatemeh , Mohsenitavakoli Saman , Zahedpasha Shaghayegh , Mortazaviamiri Seyedhadi , Bijani Ali , Kazemi Hamed Hossein , Motallebnejad Mina ,
Volume 27, Issue 4 (1-2015)
Abstract
Background and Aims: The purpose of the present study was to review the studies regarding serological and salivary oxidant / antioxidant status in patients with recurrent aphthous stomatitis (RAS).
Materials and Methods: The literature was searched using key words RAS, Antioxidants, Saliva, Hematinic (s) and Hematinic Acid in the last 10 years, particularly the recent 3 years (2010-2013). At total of 37 clinical trials, 18 case-control articles were selected and evaluated fulfilling the requirements as the RAS patients having at least 3 oral aphthous attack per year. The exclusion criteria included systemic as well as periodontal diseases, iron deficiency associated anemia, medication usage and smoking.
Conclusion: Almost all lipid-peroxidation studies in serum and saliva were manifested by an increase of malondialdehyde (MDA) concentration in RAS patients compared with controls. This would indicate the role of reactive oxygen species (ROS) in the etiology of the disease. Serum trace elements (Zn, Se) were reduced and Cu was increased in RAS patients in comparison with control individuals. A decreased serum superoxide dismutase (SOD) and an increased salivary SOD were observed in all RAS patients. Catalase (CAT) and uric acid (UA) analyses were non-inclusive. Levels of paraoxonase and arylesterase as well as antioxidant vitamins (A, E, C) were lower in RAS patients than that of controls.
Seyedeh Tahereh Mohtavipour, Somayeh Nemati, Alieh Sadat Javadzadeh Haghighat, Seyedeh Saeedeh Mohtavipour, Mina Sadadt Mirkhani,
Volume 28, Issue 4 (1-2016)
Abstract
Background and Aims: Elongation of styloid process may result in development of Eagle syndrome with associated symptoms. This study aimed to assess the frequency of elongated styloid process (ESP) and to evaluate its prevalence according to sex and age.
Materials and Methods: This study was conducted on digital panoramic radiographs of patients refered to the Oral Radiology Department of dental school, Guilan University of Medical Sciences. Styloid process length was measured and classified as elongated, pseudoarticulated, or segmented. Calcification patterns were determined as A, B, C, and D. ESP was defined as length > 30 mm. Data were analyzed by SPSS using T-test, Chi square, Pearson, and Spearman (P<0.05).
Results: A total of 505 digital panoramic radiographs taken from 227 males (45%) and 278 females (55%) aged 10 to 72 (40.1±12.9) years were evaluated. Elongated styloids were present in radiographs of 230 (45.5%) individuals. There was no significant difference in the ESP frequency between males (46.09%) and females (53.91%) (P=0.63). Type I and calcification B pattern showed more frequency than that of other categories.
Conclusion: According to these findings, elongated styloid process was a common condition among the studied population and had a significant correlation to the age.
Mohsen Shirazi, Armina Mellat, Behzad Salari,
Volume 29, Issue 3 (10-2016)
Abstract
Background and Aims: In the field of orthodontics, gaining comprehensive information around dento-skeletal complex is necessary to choose the best treatment plan for each patient. The aim of this study was to investigate the linear and angular parameters in panoramic radiographs to find a path to correlate transvers to sagittal dimensions.
Materials and Methods: Total number of sixty two, 8-14 years old children who sought for orthodontic therapy were selected (32 skeletal Class III and 30 skeletal Class I). They were exposed to x-ray to obtain the panoramic and lateral views in a controlled condition. Various linear and angular parameters were measured after tracing the landmarks on the panoramic radiograph. Data were obtained and analyzed using T-test. The level of significance was set at 0.05 (P<0.05).
Results: Linear parameters of Co-Co, Go-Go and PTM-PTM were significantly lower in class III patients than class I ones (P=0.04, 0.04, 0.02, respectively). The ramus width value was also lower in class III patients. Angular parameters of Me˄ and N˄ also showed the same results (P<0.001). Go˄ angle was significantly lower in the class I than class III patients (P=0.002, 0.007).
Conclusion: Some traceable linear and angular parameters were found in the panoramic radiographs which had the potential to correlate the transverse with sagittal dimension.
Sareh Habibzadeh, Mina Khayamzadeh, Asal Moravej, Afagh Tavasoli,
Volume 32, Issue 3 (11-2019)
Abstract
Background and Aims: Xerostomia is a clinical condition that can affect the quality and quantity of saliva. Saliva is considered an important factor in retention of edentulous patient’s denture wearers. Thus, increasing the prevalence of xerostomia in modern societies is considered a limiting factor in the quality of denture retention. This article reviews the most common techniques of denture manufacturing in edentulous patients with xerostomia and investigates the advantages versus disadvantages of each.
Materials and Methods: In this review, PubMed and google scholar search engines were searched for the following keywords: Flexible Denture, Artificial Saliva Reservoir, Hyposalivation, Hypofunction, and Xerostomia. We evaluated the flexible dentures and dentures with artificial saliva reservoirs in both jaws along with their advantages and disadvantages. 10 articles, specifically discussing complete denture fabrication in patients were selected.
Conclusion: Follow-up results showed that the flexible dentures and split dentures with saliva reservoirs to be effective in improving the quality of life of these patients and therefore can be a considered as a successful treatment option in the prosthetic rehabilitation of these patients.
Seyyed Amirhossein Mirhashemi, Sahar Jahangiri, Mina Mahdavi Moghaddam, Rashin Bahrami,
Volume 32, Issue 4 (1-2020)
Abstract
Background and Aims: All metal components of orthodontic appliances are somewhat corroded in the oral environment due to some changes in chemical, mechanical, thermal, microbiological and enzymatic factors which facilitates ion release. Ionic release can result in a discoloration of the surrounding soft tissue or allergic reactions in sensitive patients or even local pain in the area. In general, ions can cause toxic and biological side effects if their values reach the threshold, so the release of ions from the metal components of orthodontic appliances is important to us. The aim of this review article to determine the rate of orthodontic appliances ion release in different solutions.
Materials and Methods: A review of the literature was carried out in Pubmed, Google Scholare and Web of science database using selected key words (Saliva/ Titanium/Normal Saline/ Ion release Orthodontic appliance/Mouth wash/ Nickel/ Chromium). These searches were limited to the articles published from 2005 to 2018. According to the inclusion and exclusion criteria, 25 articles were obtained.
Results: Because of conflicts in the reported results, it was necessary to synchronize the measurement methods and also to use artificial saliva medium with normal pH as a control to achieve better systematic comparison.
Conclusion: There was significant differences in the ion release between mouthwashes. In all studies, the effect of pH and acidity has been shown to increase the release of these ions. In addition, stainless steel (SS) instruments had the least biocompatibility among all types of alloys evaluated.
Reza Sharifi, Mohammad Bayat, Sheida Kordi, Afshin Heidari, Mahbubeh Sadat Hasheminasab,
Volume 34, Issue 0 (5-2021)
Abstract
Background and Aims: This study aimed to collect reports and HIS in a web-based system due to the problems of paper recording of student activities in practical courses, as well as the lack of computers in the departments for observing graphs and treatment plans.
Materials and Methods: The initial graphic design of the website was done after the assessment of needs and the necessary planning for designing the website. The main template of the website was designed after consulting with the faculty and the designer company. A combination of HTML, CSS, JQuery, and Java script was used for static coding and what the user sees or interacts with. Then, the basic information entered the website and the content designer put the website in the designed layout. In the end, a sample hosting space was prepared and the website was fully provided to the professors and faculty officials to work with as an administrator and a user. They conveyed all their opinions and the corrections were made based on the feedback given.
Results: The use of the internet and software with a central database played a significant role in monitoring and evaluating the long-term information of the student and the evaluation of the entire department, universities, and patients in each region up to macro-national evaluations. This could give the expansion and advancement of science in addition to the central registration of documents and radiographs, as well as their ease to access.
Conclusion: The designed website was well received among the students and the attending staff. Introducing a web based logbook and HIS system can optimize the clinical teaching. These logbooks could help both students and staff saving time and resources, and to facilitate providing better personalized care for patients.
Abdolrahim Davari, Farnaz Farahat, Marjan Mehravaran, Alimohammad Doosthosseini, Negar Etminan,
Volume 38, Issue 0 (4-2025)
Abstract
Background and Aims: Finding an appropriate method for polishing that can be used in dental practices to improve the longevity and ease of dental restorations is of great importance. The aim of this study was to evaluate the effect of different polishing methods on the surface roughness of two types of nano-hybrid composites, an in vitro study.
Materials and Methods: In this study, 42 samples in the form of discs (6 mm in diameter and 3 mm in thickness) of two nano-hybrid composites (Charisma Kulzer and EvoCeram Tetric IPS) were prepared. Each group had 21 samples (polymerized in a mold made of polyfluorohalide material) and were all shaded (A2 color). To prevent mirror-like reflections, each sample was covered. A 2 kg load was applied for 30 seconds on each sample, after which the composites were removed. The samples were stored for 7 days in deionized water at room temperature and in the dark. After this period, the samples underwent finishing and polishing procedures. Seven random samples from each composite group were polished using different methods: System Gloss Composite LUCIDA, EVE polishing discs, and EVE polishing discs + Cosmedent polish. The surface roughness was measured using a profilometer, and observations were made under a microscope. Data were analyzed using SPSS 25 software with t-tests, ANOVA, and the Bonferroni post hoc test.
Results: The two-stage method using EVE polishing discs showed significantly the lowest surface roughness in both types of composites (P<0.0001). The type of composite did not have a significant effect on initial surface roughness (P=0.067), but the polishing method had a significant effect on the surface roughness (P<0.0001). The difference in the mean surface roughness was statistically significant among different polishing methods for either type of composites (P<0.0001). The t-test analysis showed no significant difference in the surface roughness between the two types of composites with different polishing methods (P>0.05), except in the LUCIDA polishing system where a significant difference was observed in both groups.
Conclusion: The results showed that the polishing method had a significant effect on the surface roughness and not the type of composte. The use of EVE polishing discs effectively reduced the surface roughness in both types of nano-hybrid composites used in the present study.
Mitra Montazerlotf, Mehrdad Mehrdad Hosseini Shakib, Reza Radfar, Mina Khayamzadeh,
Volume 38, Issue 0 (4-2025)
Abstract
Background and Aims: Dental caries is one of the most prevalent chronic oral diseases worldwide. Timely and accurate diagnosis of dental caries plays a crucial role in preventing lesion progression and reducing complications. This study aimed to systematically review the studies on dental caries detection using machine learning algorithms applied to periapical radiographs.
Materials and Methods: A comprehensive search was conducted in PubMed, Scopus, Web of Science, IEEE Xplore, and Google Scholar databases up to the end of 2024. Inclusion criteria comprised studies using machine learning algorithms for detecting dental caries in periapical or intraoral radiographs. The quality of studies was assessed using the QUADAS-2 tool.
Results: From 825 initial articles, 13 studies met the inclusion criteria. All studies used Convolutional Neural Networks (CNNs) with various architectures including ResNet, VGG, Inception, DenseNet, and YOLO. ResNet-based models and their hybrid variants showed the best performance with diagnostic accuracy ranging from 82% to 98%. Comparison with human experts in 6 studies revealed that deep learning algorithms demonstrated similar or superior performance.
Conclusion: From the results, deep learning especially convolutional neural networks, had significant potential for improving dental caries detection in periapical radiographs. However, challenges such as limited high-quality training data and generalizability issues need further investigation.
