Common conditions associated with displacement of the inferior alveolar nerve canal: A radiographic diagnostic aid

Mortazavi, Hamed,Baharvand, Maryam,Safi, Yaser,Behnaz, Mohammad Korean Academy of Oral and Maxillofacial Radiology 2019 Imaging Science in Dentistry Vol.49 No.2

Purpose: This study reviewed the common conditions associated with displacement of inferior alveolar nerve canal. Materials and Methods: General search engines and specialized databases including Google Scholar, Pub Med, Pub Med Central, Science Direct, and Scopus were used to find relevant studies by using keywords such as "mandibular canal", "alveolar canal", "inferior alveolar nerve canal", "inferior dental canal", "inferior mandibular canal" and "displacement". Results: About 120 articles were found, of which approximately 70 were broadly relevant to the topic. We ultimately included 37 articles that were closely related to the topic of interest. When the data were compiled, the following 8 lesions were found to have a relationship with displacement of mandibular canal: radicular/residual cysts, dentigerous cyst, odontogenic keratocyst, aneurysmal bone cyst, ameloblastoma, central giant cell granuloma, fibrous dysplasis, and cementossifying fibroma. Conclusion: When clinicians encounter a lesion associated with displaced mandibular canal, they should first consider these entities in the differential diagnosis. This review would help dentists make more accurate diagnoses and develop better treatment plans according to patients' radiographs.

Common conditions associated with displacement of the inferior alveolar nerve canal: A radiographic diagnostic aid

Hamed Mortazavi,Maryam Baharvand,Yaser Safi,Mohammad Behnaz 대한영상치의학회 2019 Imaging Science in Dentistry Vol.49 No.2

Purpose: This study reviewed the common conditions associated with displacement of inferior alveolar nerve canal. Materials and Methods: General search engines and specialized databases including Google Scholar, Pub Med, Pub Med Central, Science Direct, and Scopus were used to find relevant studies by using keywords such as “mandibular canal”, “alveolar canal”, “inferior alveolar nerve canal”, “inferior dental canal”, “inferior mandibular canal” and “displacement”. Results: About 120 articles were found, of which approximately 70 were broadly relevant to the topic. We ultimately included 37 articles that were closely related to the topic of interest. When the data were compiled, the following 8 lesions were found to have a relationship with displacement of mandibular canal: radicular/residual cysts, dentigerous cyst, odontogenic keratocyst, aneurysmal bone cyst, ameloblastoma, central giant cell granuloma, fibrous dysplasis, and cementossifying fibroma. Conclusion: When clinicians encounter a lesion associated with displaced mandibular canal, they should first consider these entities in the differential diagnosis. This review would help dentists make more accurate diagnoses and develop better treatment plans according to patients’ radiographs.

Strongyloides stercoralis and other intestinal parasites in patients receiving immunosuppressive drugs in northern Iran: a closer look at risk factors

Leila Mirzaei,Keyhan Ashrafi,Zahra Atrkar Roushan,Mohammad Reza Mahmoudi,Irandokht Shenavar Masooleh,Behnaz Rahmati,Farshid Saadat,Hamed Mirjalali,Meysam Sharifdini 한국역학회 2021 Epidemiology and Health Vol.43 No.-

OBJECTIVES: The objective of this study was to evaluate the prevalence of Strongyloides stercoralis and other intestinal parasites in patients receiving immunosuppressive drugs in northern Iran and to investigate related risk factors. METHODS: This cross-sectional study was conducted among 494 patients receiving immunosuppressive drugs, including cancer patients undergoing chemotherapy (n=188) and those treated with prolonged corticosteroid administration (n=306). All fresh fecal samples were examined using the direct wet-mount, formalin ethyl acetate concentration, and agar plate culture techniques. RESULTS: In total, 16.8% of patients were positive for at least 1 intestinal parasite; the helminthic and protozoan infection rates were 5.1% and 12.3%, respectively. The infection rate was significantly higher in corticosteroid-treated individuals (19.6%) than cancer patients (12.2%) (p<0.05). The prevalence rate of S. stercoralis among patients receiving chemotherapy and those treated with corticosteroids were 4.3% and 5.2%, respectively. The prevalence rate of S. stercoralis infection was significantly higher in older patients (p<0.05). CONCLUSIONS: Strongyloidiasis is one of the most common parasites among patients receiving immunosuppressive drugs in northern Iran. Early diagnosis and proper treatment of these patients are necessary to minimize the complications of severe strongyloidiasis.

Common conditions associated with mandibular canal widening: A literature review

Mortazavi, Hamed,Baharvand, Maryam,Safi, Yaser,Dalaie, Kazem,Behnaz, Mohammad,Safari, Fatemeh Korean Academy of Oral and Maxillofacial Radiology 2019 Imaging Science in Dentistry Vol.49 No.2

Purpose: The aim of this study was to review the common conditions associated with mandibular canal widening. Materials and Methods: General search engines and specialized databases including Google Scholar, PubMed, PubMed Central, Science Direct, and Scopus were used to find relevant studies by using the following keywords: "mandibular canal," "alveolar canal," "inferior alveolar nerve canal," "inferior dental canal," "inferior mandibular canal," "widening," "enlargement," "distension," "expansion," and "dilation." Results: In total, 130 articles were found, of which 80 were broadly relevant to the topic. We ultimately included 38 articles that were closely related to the topic of interest. When the data were compiled, the following 7 lesions were found to have a relationship with mandibular canal widening: non-Hodgkin lymphoma, osteosarcoma, schwannoma, neurofibroma, vascular malformation/hemangioma, multiple endocrine neoplasia syndromes, and perineural spreading or invasion. Conclusion: When clinicians encounter a lesion associated with mandibular canal widening, they should immediately consider these entities in the differential diagnosis. Doing so will help dentists make more accurate diagnoses and develop better treatment plans based on patients' radiographs.

Common conditions associated with mandibular canal widening: A literature review

Hamed Mortazavi,Maryam Baharvand,Yaser Safi,Kazem Dalaie,Mohammad Behnaz,Fatemeh Safari 대한영상치의학회 2019 Imaging Science in Dentistry Vol.49 No.2

Purpose: The aim of this study was to review the common conditions associated with mandibular canal widening. Materials and Methods: General search engines and specialized databases including Google Scholar, PubMed, PubMed Central, Science Direct, and Scopus were used to find relevant studies by using the following keywords: “mandibular canal,” “alveolar canal,” “inferior alveolar nerve canal,” “inferior dental canal,” “inferior mandibular canal,” “widening,” “enlargement,” “distension,” “expansion,” and “dilation.” Results: In total, 130 articles were found, of which 80 were broadly relevant to the topic. We ultimately included 38 articles that were closely related to the topic of interest. When the data were compiled, the following 7 lesions were found to have a relationship with mandibular canal widening: non-Hodgkin lymphoma, osteosarcoma, schwannoma, neurofibroma, vascular malformation/hemangioma, multiple endocrine neoplasia syndromes, and perineural spreading or invasion. Conclusion: When clinicians encounter a lesion associated with mandibular canal widening, they should immediately consider these entities in the differential diagnosis. Doing so will help dentists make more accurate diagnoses and develop better treatment plans based on patients’ radiographs.

Micro-Structure Analysis of Quasi-Static Crushing and Low-Velocity Impact Behavior of Graded Composite Metallic Foam Filled Tube

Youssef Taraz Jamshidi,Ali Pourkamali Anaraki,Mojtaba Sadighi,Javad Kadkhodapour,Seyed Mohammad Hossein Mirbagheri,Behnaz Akhavan 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.5

Foam filled tubes (FFT) are novel structures with high energy absorption, enhanced strength to weight ratio, and tailoringcapability. In the present paper, we have analyzed quasi-static uniaxial compression and low-velocity impact behavior of FFTwith closed-cell metallic foam cores and functionally graded densities both experimentally and numerically. Alporas foamswere manufactured using liquid state method with TiH2blowing agent. We prepared Specimens with graded compositionand densities by stacking of several layers of pure aluminum and A356 alloy Alporas foams with cubic geometry. We conductedseveral standard uniaxial compression experiments to determine the non-linear mechanical properties and hardening.Square aluminum tubes are manipulated to enhance the performance and tailoring specification of the structure. We generatedmicrostructural models using a hybrid 3D Voronoi diagram and CT-scan images to predict mechanical behavior numerically.Computed tomography is used to determine the inner cells morphological characterization. Also, the modified Kelvin cellwith a beam element in edge regions is manipulated to enhance accuracy. Comparing the quasi-static experiment and FEAresults show good accordance, and hence, we achieved the calibrated model. Finally, we used the numerical model in FFTtailoring and mechanical properties design.

Conceptualization and development of a questionnaire to determine physical activity barriers

Maryam Selk-Ghaffari,Bahar Hassanmirzaei,Amin Nakhostin-Ansari,Behnaz Mahdaviani,Mohammad Saeid Khonji,Reyhaneh Aghajani,Maedeh Gholami-Mehrabadi,Afifeh Khosravi,Ramin Kordi 한국운동영양학회 2022 Physical Activity and Nutrition (Phys Act Nutr) Vol.26 No.2

[Purpose] Considering the role of physical activity on public health and the high prevalence of physical inactivity worldwide, determining physical activity barriers is critical and will be a road map for future planning. This study aimed to develop a comprehensive questionnaire to determine physical activity barriers. [Methods] By reviewing previous studies, the main domains of the questionnaire were established. A physical activity expert interviewed 20 individuals aged 18 to 65 years. The results were evaluated by an expert panel for a content validity index. Face validity, test-retest reliability, and internal consistency were established on 204 individuals. [Results] The content validity index in all items was within the acceptable range (>0.85). Face validity was appropriate, and the misunderstanding index was < 20% in all items. Test-retest reliability in the final questionnaire in all items based on Cohen’s kappa was > 0.20, indicating fair agreement. Internal consistency with Cronbach’s alpha of 0.63 was within the acceptable range. [Conclusion] The study revealed that the newly designed survey is valid, accurate, and reliable. The use of this comprehensive tool by policymakers would help them properly identify the perceived barriers, and thus perform better physical activity interventions as promotional health programs.