Hamid Abbaszadeh

Birjand University of Medical Sciences

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Mahdieh Rajabi‐Moghaddam

Birjand University of Medical Sciences

Hemmat Gholinia

Babol University of Medical Sciences

Hamid Salehiniya

Birjand University of Medical Sciences

Nooshin Mohtasham

Mashhad University of Medical Sciences

Sepideh Siadati

Semnan University of Medical Sciences

Majid Sharbatdaran

Babol University of Medical Sciences

Maryam Seyedmajidi

Babol University of Medical Sciences

Jahanshah Salehinejad

Mashhad University of Medical Sciences

Ali Bijani

Babol University of Medical Sciences

Ebrahim Miri‐Moghaddam

Birjand University of Medical Sciences

Cooperative Institutions

Babol University of Medical Sciences

Birjand University of Medical Sciences

Mashhad University of Medical Sciences

Tehran University of Medical Sciences

Mazandaran University of Medical Sciences

University of Tehran

University of Birjand

Razi Hospital

Islamic Azad University Dental Branch of Tehran

Iran University of Medical Sciences

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A Comparative Study of the Impact of Education through the Infographic Method with the Multimedia Method in Increasing the Knowledge of Dentists and Dental Students in Birjand city Regarding the 2019 Coronavirus Disease

Journal of Medical Education and Development (2023)

Azadeh Ebrahimzadeh Zohreh Mirzaie Hamid Salehiniya Hamid Abbaszadeh

Introduction: Dentists are at the forefront of viral infections such as the new coronavirus. Considering the need for dentists to increase their knowledge about emerging diseases, this study compared the impact of education through the infographic with the multimedia in informing the dentists and dental students of Birjand City about the 2019 coronavirus disease. Methods: An interventional study was done in 2022 on 196 dentists and dental students in Birjand city, who were randomly divided into groups of education through infographic (n = 98) and education through multimedia (n = 98). The educational content was the same for the groups. A 40-point test was performed before and after the educational intervention, and the results were analyzed using chi-square and independent t-tests at a significance level of P < 0.05. Results: The average pre-test scores in the infographic and multimedia groups were 28.69 ± 5.38 and 28.04 ± 6.47, respectively. There was no significant difference between the knowledge scores in the two groups before the intervention (P = 0.44). The average post-test scores in the multimedia and infographic groups were 38.83 ± 1.14 and 31.11 ± 3.19, respectively. The results of the statistical tests showed that there was a significant difference between the knowledge scores after the educational intervention (P = 0.001). Conclusion: Multimedia education is more effective than infographics in improving the level of knowledge, so the establishment of this educational method by health policymakers is recommended as an effective educational method in the field of emerging diseases.

Infographic

Knowledge level

10.18502/jmed.v18i2.13667

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Actinomycotic Osteomyelitis of Mandible

Journal of Craniofacial Surgery (2016)

Hamid Abbaszadeh Mohammad Sina Arab Sheibani

Actinomycosis is an infection of filamentous, gram-positive anaerobic bacteria. Actinomycosis of jaw bone is rare and the diagnosis is often difficult. The aim of this patient report is to present an actinomycotic osteomyelitis of mandible in a 30-year-old male patient. The patient presented with a chief complaint of pain and unhealed dental socket after mandibular teeth extractions. Radiographs showed ill-defined radiolucencies and perforation of buccal and lingual cortical plate; several biopsies and different therapy could not improve the lesion because of fault diagnosis and improper treatment. Finally, the authors' histopathological examination revealed granulation tissue surrounded bacterial colonies compatible with actinomycotic colonies. Follow-up examinations showed that the patient was well 6 months after prolonged treatment without any pain and discharge from dental socket.

Actinomycosis

Mandible (arthropod mouthpart)

Mandibular Diseases

Perforation

Granulation tissue

10.1097/scs.0000000000002793

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Comparison of the use of personal protective equipment and infection control in dentists and their assistants before and after the corona crisis

Journal of Education and Health Promotion (2021)

Narjes Akbari Hamid Salehiniya Farshid Abedi Hamid Abbaszadeh

BACKGROUND: Coronavirus disease 2019 is a new viral outbreak in the world. Dentists and their assistants are at greatest risk of exposure to the virus, due to close contact with patients and dealing with aerosols. Hence, the aim of this study was to compare the use of personal protective equipment (PPE) and supplementary protective equipment (SPE) and observance of the principles of infection control (PIC) in dentists and their assistants before and after the corona crisis. MATERIALS AND METHODS: This cross-sectional study was conducted using an online survey from May 6 to 20, 2020. Convenience sampling was used to select individuals. The questionnaire, consisting of four general categories about the use of PPE and SPE and the observance of PIC by dentists and their assistants before and after corona crisis, was registered at Porsline website (https://survey.porsline.ir/s/KUt7VQB). Frequencies in each subcategory were calculated and comparisons were done using Chi-square test, Fisher's exact test, and paired sample t -test. A P < 0.05 was considered statistically significant. RESULTS: There were significant differences in the frequency of use of PPE by dentists before and after corona crisis for oral and dental examination and also dental procedures ( P < 0.001). There were significant differences in the frequency of use of SPE and observance of PIC before and after corona crisis, except for different types of suction types ( P = 0.22), dental handpiece ( P = 0.66), and dental unit ( P = 1). There were significant differences in the frequency of use of PPE by dental assistants before and after corona crisis ( P < 0.001). CONCLUSIONS: Although the frequency of use of PPE and observance of PIC increased among dentists and their assistants, this increase is not sufficient, especially for dental assistants, and a higher level of use of PPE and PIC observance in face of highly contagious and life-threatening viruses such as corona is required.

Personal Protective Equipment

Corona (planetary geology)

10.4103/jehp.jehp_1220_20

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Correlation of Tissue Eosinophils with Prognosis in Head and Neck Cutaneous Squamous Cell Carcinomas

DOAJ (DOAJ: Directory of Open Access Journals) (2018)

javad halimi Sepideh Siadati Hamid Abbaszadeh Hemmat Gholinia Sh Nafarzadeh

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The Prevalence of COVID-19 in Dentists and Dental Assistants

Journal of Biostatistics and Epidemiology (2021)

Narjes Akbari Hamid Salehiniya Hamid Abbaszadeh

Introduction: The aim of this study was to investigate the prevalence of COVID-19 in dentists and dental assistants and their associated signs and symptoms. Methods: A cross-sectional study was conducted using an online survey from 9th to 23th May 2020. The sample size was 385. The questionnaire was registered at Porsline website. The questionnaire included questions about infection of dentists, dental assistants and their families with COVID-19, signs and symptoms, paraclinical tests, and treatments. The data were entered into Excel and SPSS software and analyzed using logistic regression test. Results: From all responding dentists, 15.8% were suspected of having covid-19. Based on symptoms, only 1.6% of dentists were highly suspicious for COVID-19. Only 0.78% of dentists were definitely positive for COVID-19 based on paraclinical tests. Symptoms were often very mild to moderate in severity. Among dental assistants, 5.5% were suspected of having COVID-19. Based on symptoms, none of dentists’ assistants were highly suspicious for COVID-19. None of dental assistants were definitely positive for COVID-19 based on paraclinical tests. Symptoms were often very mild to moderate in severity. Logistic regression showed that the odds of infection with Corona was higher in government-sector dentists than in the private sector (OR: 1.189; 95% C.I: 0.812-1.742), in specialist dentists than in general (OR: 1.903; 95% C.I: 0.532-2.245), and in dentists between the ages of 30-60 years old than under the age of 30 (OR: 3.647; 95% C.I: 0.840-15.835). Conclusion: Despite the fact that dentistry is a high-risk job for COVID-19 infection, the overall prevalence of COVID-19 in dentists and their assistants might be very low and the severity of symptoms in case of infection is probably mild.

2019-20 coronavirus outbreak

10.18502/jbe.v7i2.6726

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Attitudes and Satisfaction of Medical Sciences Students with Electronic Exams at Birjand University of Medical Sciences

Educational research in medical sciences (2022)

Zahra Zahedi Hamid Salehiniya Afagh Zarei Hamid Abbaszadeh

Background: Assessing student attitudes and satisfaction with electronic exams (e-exams) is crucial to evaluating e-learning. Objectives: This study aimed to evaluate students' attitudes and satisfaction regarding e-exams during COVID-19. Methods: This cross-sectional study was conducted on 620 volunteer students of Birjand University of Medical Sciences (BUMS), who were selected based on random sampling method. The data collection tool was a researcher-made questionnaire with three sections of demographic information, attitude (including six dimensions and 19 questions), and satisfaction (including nine dimensions and 19 questions). A 5-point Likert scale was used for scoring, and the data were analyzed using t-test, ANOVA, and Pearson correlation coefficient at the significant level of 0.05. Results: In this study, 620 students (56% women and 44% men) participated from June to September 2020. The mean age was 21.97 ± 3.27, and the mean students' attitude and satisfaction score was 59.18 ± 7.99 and 65.73 ± 10.05, respectively. The mean attitude and satisfaction scores by gender were not significantly different. The mean attitude and satisfaction scores regarding academic semester (P-values = 0.001 and 0.019, respectively), faculty (P-values = 0.001 and 0.002, respectively) and degree (P-values < 0.001 and = 0.006, respectively) were significantly different. A positive and significant correlation was found between students' attitudes and students' satisfaction, as well as between students' age and attitudes. Conclusions: According to the results, overall attitude and satisfaction were excellent and above average. Better attitudes toward e-exams were associated with a higher satisfaction level. E-exam validity and reliability concerns should be addressed in order to improve students' attitudes.

Cross-sectional study

10.5812/erms-120807

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Comparison the salivary streptococcus mutans levels between caries-active and caries-free children from Birjand, Iran: A case-control study

Heliyon (2024)

Ebrahim Shafaie Zahra Badri Hamid Salehiniya Hamid Abbaszadeh

ObjectiveDental plaque bacteria, including Streptococcus mutans (SM), play a role in the pathogenesis of the dental caries. There are conflicting results regarding the association of salivary SM level and dental caries susceptibility. Our aim was to compare salivary SM levels in colony-forming units (CFU) between children with active caries and caries-free children in Birjand, Iran.MethodsThis case-control study included 61 six-year-old children referred to health centers in Birjand city, Iran, in 2022. The children were divided into two groups: case (dmft/DMFT>0 with active caries) (including 31 children) and control (dmft/DMFT = 0 [caries-free]) (including 30 children). Demographic information and dental history were recorded. Oral examinations were also performed by the dentist. Unstimulated saliva samples were collected from children. The number of salivary SM colonies was determined using the microbial culture and confirmed using the polymerase chain reaction (PCR). The data were analyzed using Chi-square and T-tests at a significance level of p < 0.05.ResultsThe mean number of SM colonies was 126.24 ± 92.78 CFU/ml and 92.38 ± 75.34 CFU/ml in case and control groups, respectively. No significant difference was found in salivary SM levels between case and control groups (P = 0.125). No significant association was observed between caries experience with gender (P = 0.363), type of school (public/private) (P = 0.296), receiving oral health education (P = 0.072) and frequency of tooth brushing (P = 0.935). The mean gingival index (P = 0.001) and plaque index (P = 0.025) in case group were significantly higher than control group.ConclusionThere is no significant difference in salivary SM levels between caries-active and caries-free children in Birjandi children.

10.1016/j.heliyon.2024.e25663

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Myofibroblasts in calcifying odontogenic cyst and dentigerous cyst

Majallah-i dānishgāh-i ̒ulum-i pizishkī-i Kirmān. (2018)

Negin Mansuri Hamid Abbaszadeh Majid Sharbatdaran Nasrollah Saghravanian Hemmat Gholinia

Introduction:Calcifying odontogenic cyst (COC) is an odontogenic cyst that sometimes shows aggressive behavior, while dentigerous cyst (DC) always has a benign nonaggressive course. There are evidences that myofibroblasts are involved in invasion and their role in biologic behavior of odontogenic cysts has been less understood. So, the aim of the present study was to compare the role of myofibroblasts in COC and DC. Methods:In this cross-sectional study, paraffin-embedded tissue blocks of 20 COCs and 20 DCs were studied. Four-micron sections were prepared from tissue blocks and stained with α-SMA antibody using immunohistochemistry. Percentages of myofibroblasts were semi quantitatively classified into negative ( 50% of cells were positive). Percentage of myofibroblasts was compared between COC and DC groups using t-test and Chi-Square statistical tests. Results:Means of myofibroblasts percentages in COC and DC groups were respectively 35±33 and 32±30 that did not show significant difference between COC and DC groups (P=0.76). There was not any significant difference between COC and DC groups with respect to semi quantitative classification of percentage of myofibroblasts (P=0.62). Conclusion:Myofibroblasts probably do not play a significant role in different biologic behaviors of calcifying odontogenic and dentigerous cysts.

Dentigerous cyst

Myofibroblast

Odontogenic cyst

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Evaluation of prognostic factors of head and neck squamous cell carcinomas in Iranian patients: A narrative review

Journal of Oral Health and Oral Epidemiology (2024)

Mahdieh Rajabi‐Moghaddam Hamid Abbaszadeh

Background: Head and neck squamous cell carcinoma (HNSCC) represents the largest proportion of head and neck cancers (HNCs). Despite new treatment modalities, the 5-year survival rate has not improved much. Identifying the factors affecting the prognosis and survival of patients is the first step in trying to improve the prognosis of these patients. The aim of this review was to investigate prognostic factors of HNSCC in Iran. Methods: A web-based search of all original articles conducted in Iran until October 2022 on prognostic factors of HNSCC was done using English and Persian language databases such as Google Scholar, PubMed, IranMedex, etc. The data were categorized according to clinical, histopathological and treatment parameters. Results: A total of 7 articles related to the aim of this study were found. Age and regular periodic follow-ups were common prognostic factors in three studies. The results about factors such as the tumor staging and treatment method were contradictory among different studies. It seems that some factors such as gender, microscopic grading, and patient and professional delay in cancer management have no effect on the prognosis of this group of patients. Conclusions on some factors, such as P53 and EGFR expression and body mass index, also seem to require further investigation. Conclusion: Age and regular periodic follow-ups are among the common prognostic factors that have been mentioned in different studies. In order to improve the survival of HNSCC patients, diagnosis at lower ages and early stages of the tumor along with periodic evaluations after cancer treatment, seems necessary.

Squamous cell cancer

Narrative review

10.34172/johoe.2209.1505

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Impact of gene polymorphisms on toxicity and response rate in head and neck squamous cell carcinoma: a literature review

Research Square (Research Square) (2022)

Hamid Abbaszadeh Mahdieh Rajabi‐Moghaddam

Abstract Advanced head and neck squamous cell carcinoma (HNSCC) is treated with radiotherapy, chemotherapy, targeted therapy or a combination of these treatments. Variations in toxicity and response to therapy are observed among patients despite similar clinicopathologic characteristics which are attributed to single nucleotide polymorphisms (SNPs). The aim of this review was to evaluate the impact of SNPs on toxicity and response to therapy in HNSCCs. A web-based search of all original articles about the impact of gene polymorphisms on toxicity and response to therapy in HNSCCs was done until September 2021 using international English language databases including Google Scholar, Scopus, PubMed and Web of science. Findings were categorized by type of treatment (radiotherapy, chemotherapy, targeted therapy, or combination therapy). In each category, studies related to growth control genes, cell proliferation, apoptosis, DNA repair genes, antioxidant and drug detoxification genes, genes of drug metabolizing enzymes, tissue remodeling genes and genes of antibody-dependent cellular cytotoxicity were discussed separately. Among studied SNPs with probable impact on toxicity and response to therapy are XRCC1, XRCC3, RAD51, Ku70, NBN, CAT, GSTP1, GSTT1, GSTM1, XPD, XPC, ERCC1, MMP3, ACSL6, EXO1, CXP2D6, FcγRIIIa, AurkA, and EGFR. Understanding gene polymorphisms will help us move toward personalized medicine and determine which patients will actually benefit from therapies for HNSCCs. By examining the SNPs, it is possible to make predictions about the patient's response to treatment or development of toxicity after treatment, and if necessary, make changes in the patient's treatment regimen.

ERCC1

10.21203/rs.3.rs-1217709/v1

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