S. Irani, Z. Khamverdi, A. Soltanian, Oujan Bagheri
Background: Academic dishonesty is the most important educational concern. According to previous studies, it is more common in several groups of students. To prevent academic dishonesty, it is important to know the extent of the problem. Accordingly, this study was designed to investigate the behaviors, attitudes, and interpretations of dental students regarding exam fraud in the 2015-2016 academic years. Methods: For this purpose, a three-part questionnaire was prepared, including demographic characteristics and specific questions. The specific questions included students’ behavior, attitudes, and interpretation in the form of three scenarios. A total of 163 questionnaires were collected, and the statistical analysis was performed using SPSS, version 20. The Mann-Whitney U test and the Kruskal-Wallis test were used to analyze the data. Results: The students consisted of 90 males (55.2%) and 73 females (44.8%), and their average age was 22.72±2 years (22.3±2.87 and 23.23±2.37 years for boys and girls, respectively). The results revealed that around 65.6% of students were generally aware of the fraud problem in the faculty and knew the cheaters (63.1%). Further, 55.2% of students believed that instructors should prevent cheating during the exam. Data analyses demonstrated that there were no significant differences between boys and girls in all research variables. Finally, the average behavior proportion and attitude of the first-year students were higher than those of other students. Conclusion: Based on the findings, the rate of fraud was high in dentistry schools and possibly in other medical schools, highlighting the importance of the creating culture in changing students’ attitudes.
{"title":"Academic Dishonesty in the Dental Faculty: Relations Among Students’ Behavior, Attitudes, and Interpretation","authors":"S. Irani, Z. Khamverdi, A. Soltanian, Oujan Bagheri","doi":"10.34172/ajdr.2023.1643","DOIUrl":"https://doi.org/10.34172/ajdr.2023.1643","url":null,"abstract":"Background: Academic dishonesty is the most important educational concern. According to previous studies, it is more common in several groups of students. To prevent academic dishonesty, it is important to know the extent of the problem. Accordingly, this study was designed to investigate the behaviors, attitudes, and interpretations of dental students regarding exam fraud in the 2015-2016 academic years. Methods: For this purpose, a three-part questionnaire was prepared, including demographic characteristics and specific questions. The specific questions included students’ behavior, attitudes, and interpretation in the form of three scenarios. A total of 163 questionnaires were collected, and the statistical analysis was performed using SPSS, version 20. The Mann-Whitney U test and the Kruskal-Wallis test were used to analyze the data. Results: The students consisted of 90 males (55.2%) and 73 females (44.8%), and their average age was 22.72±2 years (22.3±2.87 and 23.23±2.37 years for boys and girls, respectively). The results revealed that around 65.6% of students were generally aware of the fraud problem in the faculty and knew the cheaters (63.1%). Further, 55.2% of students believed that instructors should prevent cheating during the exam. Data analyses demonstrated that there were no significant differences between boys and girls in all research variables. Finally, the average behavior proportion and attitude of the first-year students were higher than those of other students. Conclusion: Based on the findings, the rate of fraud was high in dentistry schools and possibly in other medical schools, highlighting the importance of the creating culture in changing students’ attitudes.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91320725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background: The incidence and mortality rates of salivary gland tumors have increased according to previous evidence. No study has so far focused on the trend of clinical and histopathologic patterns of salivary gland tumors in Iran. Therefore, the aim was to investigate the incidence and clinico-histopathologic trend of salivary gland tumors in a retrospective, cross-sectional, institutional study from 2010-2019 in Amir Alam hospital. Methods: The archived medical records were collected from patients with the histopathologic diagnosis of benign and malignant salivary gland tumors from Amir Alam hospital, Tehran during (April-April) 2010- 2019. Demographic data and histopathologic features, including tumor size, lymph node involvement, vascular invasion, perineural involvement, and histopathologic differentiation were retrieved, and the samples were categorized and reviewed based on the new classification of head and neck tumors. Finally, the frequencies of characteristics were determined and expressed as numbers (percentage values). Results: Of 1203 salivary gland tumors, 77.6% and 22.4% were benign and malignant, respectively. The incidence of benign tumors was increased from 37 (22.2%) in 2010 to 178 (364.9%) in 2019. In the collection of the total samples, the incidence of malignant tumors was relatively steady from 23 (13.8%) samples in 2010 to 27 (55.35%) in 2019. However, an increase in the incidence of tumors with low-grade differentiation was found from 12.5% in 2010 to 80% in 2019. Conclusions: The incidence of benign and malignant salivary tumors with a higher degree of malignancy had an increasing trend in Amir Alam hospital during 2010-2019.
{"title":"An Investigation of the Clinico-histopathologic Trend of Salivary Gland Tumors in Amir Alam Hospital During 2010- 2019: A Retrospective Study","authors":"Amirhosein Ghaemi, Noushin Jalayer Naderi, Farzad Yazdani Biucki","doi":"10.34172/ajdr.2023.1618","DOIUrl":"https://doi.org/10.34172/ajdr.2023.1618","url":null,"abstract":"Background: The incidence and mortality rates of salivary gland tumors have increased according to previous evidence. No study has so far focused on the trend of clinical and histopathologic patterns of salivary gland tumors in Iran. Therefore, the aim was to investigate the incidence and clinico-histopathologic trend of salivary gland tumors in a retrospective, cross-sectional, institutional study from 2010-2019 in Amir Alam hospital. Methods: The archived medical records were collected from patients with the histopathologic diagnosis of benign and malignant salivary gland tumors from Amir Alam hospital, Tehran during (April-April) 2010- 2019. Demographic data and histopathologic features, including tumor size, lymph node involvement, vascular invasion, perineural involvement, and histopathologic differentiation were retrieved, and the samples were categorized and reviewed based on the new classification of head and neck tumors. Finally, the frequencies of characteristics were determined and expressed as numbers (percentage values). Results: Of 1203 salivary gland tumors, 77.6% and 22.4% were benign and malignant, respectively. The incidence of benign tumors was increased from 37 (22.2%) in 2010 to 178 (364.9%) in 2019. In the collection of the total samples, the incidence of malignant tumors was relatively steady from 23 (13.8%) samples in 2010 to 27 (55.35%) in 2019. However, an increase in the incidence of tumors with low-grade differentiation was found from 12.5% in 2010 to 80% in 2019. Conclusions: The incidence of benign and malignant salivary tumors with a higher degree of malignancy had an increasing trend in Amir Alam hospital during 2010-2019.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75832816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fareiborz Vafaee, Zahra Bagheri, S. Nikanjam, Fahimeh Daneshyar, Behnaz Alafchi
Background: This study compared the amount of residual cement at the margin of implant-supported crowns cemented using the polytetrafluoroethylene (PTFE) tape, replica technique, and conventional cementation technique. Methods: In this in vitro experimental study, a mandibular model underwent full-arch scanning. The right first molar tooth was eliminated on the scan using Exocad software, and a regular implant analog was modelled using the Exocad model creator. The designed abutment was then printed. The implant analog was fixed in place with acrylic resin and scanned using a scan body. A full-zirconia custom abutment was then designed by Exocad. Abutments were fabricated using zirconia and sintered. Twenty-seven resin crowns were fabricated for the abutments, and their fit was assessed. Nine crowns were conventionally cemented by filling half of the crown space with cement, 9 crowns were cemented using PTFE tape, and the remaining 9 were first placed on a resin replica and then cemented on the abutments. The residual cement was weighed using a digital scale, and the groups were compared by one-way ANOVA and LSD test (α=0.05). Results: The amount of residual cement was significantly different among the three groups, indicating that the amount of residual cement was the highest in conventional cementation, and the lowest in the replica group (P < 0.05). Pairwise comparisons showed significant differences between all groups (P < 0.05). Conclusions: The replica technique followed by the PTFE tape resulted in the minimum amount of residual cement at the margin of implant-supported cement-retained crowns and are preferred for use in the clinical setting.
{"title":"Amount of Residual Cement at the Margin of Implant-Supported Crowns Cemented Using the Polytetrafluoroethylene Tape, Replica Technique, and Conventional Cementation Technique","authors":"Fareiborz Vafaee, Zahra Bagheri, S. Nikanjam, Fahimeh Daneshyar, Behnaz Alafchi","doi":"10.34172/ajdr.2023.1657","DOIUrl":"https://doi.org/10.34172/ajdr.2023.1657","url":null,"abstract":"Background: This study compared the amount of residual cement at the margin of implant-supported crowns cemented using the polytetrafluoroethylene (PTFE) tape, replica technique, and conventional cementation technique. Methods: In this in vitro experimental study, a mandibular model underwent full-arch scanning. The right first molar tooth was eliminated on the scan using Exocad software, and a regular implant analog was modelled using the Exocad model creator. The designed abutment was then printed. The implant analog was fixed in place with acrylic resin and scanned using a scan body. A full-zirconia custom abutment was then designed by Exocad. Abutments were fabricated using zirconia and sintered. Twenty-seven resin crowns were fabricated for the abutments, and their fit was assessed. Nine crowns were conventionally cemented by filling half of the crown space with cement, 9 crowns were cemented using PTFE tape, and the remaining 9 were first placed on a resin replica and then cemented on the abutments. The residual cement was weighed using a digital scale, and the groups were compared by one-way ANOVA and LSD test (α=0.05). Results: The amount of residual cement was significantly different among the three groups, indicating that the amount of residual cement was the highest in conventional cementation, and the lowest in the replica group (P < 0.05). Pairwise comparisons showed significant differences between all groups (P < 0.05). Conclusions: The replica technique followed by the PTFE tape resulted in the minimum amount of residual cement at the margin of implant-supported cement-retained crowns and are preferred for use in the clinical setting.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90875271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background: Different histochemical stains have been applied to demonstrate the cytotoxic and genotoxic effects of cigarette smoking on cells. Feulgen and Papanicolaou were the most popular stains to demonstrate nuclear abnormalities. The aim of this study was to compare Feulgen and Papanicolaou stains in demonstrating the cytotoxic and genotoxic effects of cigarette smoking on exfoliated oral mucosa cells. Methods: A total of 31 cigarette smokers and 15 non-smokers were included in this case-control study. Using a wooden spatula, two samples were taken from each participant. The samples from the left buccal mucosa were stained with Feulgen and the right mucosa with Papanicolaou. The mean number of micronuclei and the number of cells with pyknosis, karyorrhexis, and karyolysis were determined on Feulgen and Papanicolaou-stained slides. The number of counted cells with pyknosis, karyorrhexis, and karyolysis in 1000 cells/subject was recorded. The mean number of micronuclei was determined by the number of counted micronuclei per 1000 cells per subject. Results: The number of micronuclei was not significantly different between Feulgen and Papanicolaou stained samples (P=0.27). Demonstration of karyolysis (P=0.73) and karyorrhexis (P=0.24) was not significantly different between Feulgen and Papanicolaou staining methods. The Feulgen was significantly more effective in demonstrating pyknosis compared to Papanicolaou (P=0.02). Conclusions: Feulgen and Papanicolaou stains had similar effectiveness in demonstrating DNA alterations (micronucleus) and cellular death features (karyorrhexis and karyolysis). Feulgen was preferable to display pyknosis than Papanicolaou.
{"title":"A Histochemical Comparison of Feulgen and Papanicolaou Stains in Demonstrating Cytotoxic and Genotoxic Effects of Cigarette Smoking on Human Buccal Mucosa Cells","authors":"Iman Yarmohammadi, Noushin Jalayer Naderi","doi":"10.34172/ajdr.2023.433","DOIUrl":"https://doi.org/10.34172/ajdr.2023.433","url":null,"abstract":"Background: Different histochemical stains have been applied to demonstrate the cytotoxic and genotoxic effects of cigarette smoking on cells. Feulgen and Papanicolaou were the most popular stains to demonstrate nuclear abnormalities. The aim of this study was to compare Feulgen and Papanicolaou stains in demonstrating the cytotoxic and genotoxic effects of cigarette smoking on exfoliated oral mucosa cells. Methods: A total of 31 cigarette smokers and 15 non-smokers were included in this case-control study. Using a wooden spatula, two samples were taken from each participant. The samples from the left buccal mucosa were stained with Feulgen and the right mucosa with Papanicolaou. The mean number of micronuclei and the number of cells with pyknosis, karyorrhexis, and karyolysis were determined on Feulgen and Papanicolaou-stained slides. The number of counted cells with pyknosis, karyorrhexis, and karyolysis in 1000 cells/subject was recorded. The mean number of micronuclei was determined by the number of counted micronuclei per 1000 cells per subject. Results: The number of micronuclei was not significantly different between Feulgen and Papanicolaou stained samples (P=0.27). Demonstration of karyolysis (P=0.73) and karyorrhexis (P=0.24) was not significantly different between Feulgen and Papanicolaou staining methods. The Feulgen was significantly more effective in demonstrating pyknosis compared to Papanicolaou (P=0.02). Conclusions: Feulgen and Papanicolaou stains had similar effectiveness in demonstrating DNA alterations (micronucleus) and cellular death features (karyorrhexis and karyolysis). Feulgen was preferable to display pyknosis than Papanicolaou.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79347751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Mortazavi, A. Pakfetrat, Masoome Baghbani, Atie Safaee
Background: The aim of this study was to evaluate the radiographic and clinical features of malignant oral and maxillofacial lesions in patients referred to the Radiology Department of Mashhad Dental School from 2003 to 2017. Methods: A total of 45 radiographs of patients who had been referred to the Radiology Department of Mashhad Dental School from 2003 to 2017 were selected from the radiology archive. The patients presenting with malignant lesions in jaws and a definite pathologic diagnosis were selected as the study population. The radiographic features of lesions were investigated using intraoral radiographies, panoramic, and cone-beam computed tomography (CBCT) or computed tomography (CT) views. Then, 18 patients whose information was available were evaluated. Fisher’s exact test was used to compare the characteristics of lesions. Results: The age of the patients ranged from 5 to 84 years, with a mean of 49.18 years. Of the 45 lesions identified, squamous cell carcinoma (SCC) was the most prevalent malignancy, followed by lymphoma and mucoepidermoid carcinoma. Most malignant lesions were seen in the posterior region of the jaws, and lesions were generally more prevalent in the mandible. Additionally, 77.8% of the observed malignancies had an ill-defined border, and 86.6% of them were radiolucent. In the clinical view, swelling was the most common symptom, and the duration of the disease in the majority of the lesions was less than 3 months. Conclusions: Paying attention to the course of the lesion, its internal structure and borders in the radiographic view can lead to a more accurate differentiation of malignant lesions from benign ones and timely referral of the patient.
{"title":"Evaluation of Radiographic Features and Clinical Signs of Maxillofacial Malignancies in Patients Referred to Mashhad Dental School During 2003-2017","authors":"S. Mortazavi, A. Pakfetrat, Masoome Baghbani, Atie Safaee","doi":"10.34172/ajdr.2023.579","DOIUrl":"https://doi.org/10.34172/ajdr.2023.579","url":null,"abstract":"Background: The aim of this study was to evaluate the radiographic and clinical features of malignant oral and maxillofacial lesions in patients referred to the Radiology Department of Mashhad Dental School from 2003 to 2017. Methods: A total of 45 radiographs of patients who had been referred to the Radiology Department of Mashhad Dental School from 2003 to 2017 were selected from the radiology archive. The patients presenting with malignant lesions in jaws and a definite pathologic diagnosis were selected as the study population. The radiographic features of lesions were investigated using intraoral radiographies, panoramic, and cone-beam computed tomography (CBCT) or computed tomography (CT) views. Then, 18 patients whose information was available were evaluated. Fisher’s exact test was used to compare the characteristics of lesions. Results: The age of the patients ranged from 5 to 84 years, with a mean of 49.18 years. Of the 45 lesions identified, squamous cell carcinoma (SCC) was the most prevalent malignancy, followed by lymphoma and mucoepidermoid carcinoma. Most malignant lesions were seen in the posterior region of the jaws, and lesions were generally more prevalent in the mandible. Additionally, 77.8% of the observed malignancies had an ill-defined border, and 86.6% of them were radiolucent. In the clinical view, swelling was the most common symptom, and the duration of the disease in the majority of the lesions was less than 3 months. Conclusions: Paying attention to the course of the lesion, its internal structure and borders in the radiographic view can lead to a more accurate differentiation of malignant lesions from benign ones and timely referral of the patient.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87867887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Bohlouli, Safa Raeesi, H. Samadi kafil, R. Negahdari, Mohammad Hassani, Z. Aghazadeh
Background: Denture stomatitis (DS) due to Candida albicans is a chronic inflammation of mucous membranes that occurs beneath acrylic resin dentures. Various antifungal and disinfecting agents with different formulations are used to treat this condition with different side effects. Recently, the use of herbal medicines has attracted attention in the treatment of medical and dental conditions. The main goal of this study was to evaluate the antifungal efficacy of effervescent tablets containing ginger on complete dentures in patients with oral fungal infections in vitro. Methods: In the present in vitro study, 81 acrylic resin dentures were divided into 3 groups and contaminated with Candida albicans, Candida glabrata, and Candida krusei fungal species, and each group was assigned to 3 groups, then immersed in solutions containing effervescent ginger tables, nystatin (as a positive control group), and distilled water (as a negative control group). The dentures underwent fungal culture procedures at 30-, 60-, and 180-minute intervals. Finally, the study groups were investigated for the presence or absence of fungal colonies. Results: According to the results, the mean fungal colonies in the nystatin group were generally less than that in the ginger tablet group. The antifungal effect of nystatin began earlier than the ginger tablet, (i.e., in the presence of nystatin), and Candida counts diminished to zero after 60 minutes; however, this happened after 180 minutes in the effervescent ginger tablet solution. Conclusions: Although the antifungal effect of nystatin was higher and faster than that of ginger-containing effervescent tablets, if necessary, it is possible to use ginger tablets for a longer time to eliminate fungal contaminants from dentures. Ginger-containing effervescent antifungal tablets require 180 minutes to exert their antifungal effect.
{"title":"Evaluation of Antifungal Effects of Tablets containing Ginger on Dentures Contaminated with Candida (In Vitro)","authors":"S. Bohlouli, Safa Raeesi, H. Samadi kafil, R. Negahdari, Mohammad Hassani, Z. Aghazadeh","doi":"10.34172/ajdr.2023.457","DOIUrl":"https://doi.org/10.34172/ajdr.2023.457","url":null,"abstract":"Background: Denture stomatitis (DS) due to Candida albicans is a chronic inflammation of mucous membranes that occurs beneath acrylic resin dentures. Various antifungal and disinfecting agents with different formulations are used to treat this condition with different side effects. Recently, the use of herbal medicines has attracted attention in the treatment of medical and dental conditions. The main goal of this study was to evaluate the antifungal efficacy of effervescent tablets containing ginger on complete dentures in patients with oral fungal infections in vitro. Methods: In the present in vitro study, 81 acrylic resin dentures were divided into 3 groups and contaminated with Candida albicans, Candida glabrata, and Candida krusei fungal species, and each group was assigned to 3 groups, then immersed in solutions containing effervescent ginger tables, nystatin (as a positive control group), and distilled water (as a negative control group). The dentures underwent fungal culture procedures at 30-, 60-, and 180-minute intervals. Finally, the study groups were investigated for the presence or absence of fungal colonies. Results: According to the results, the mean fungal colonies in the nystatin group were generally less than that in the ginger tablet group. The antifungal effect of nystatin began earlier than the ginger tablet, (i.e., in the presence of nystatin), and Candida counts diminished to zero after 60 minutes; however, this happened after 180 minutes in the effervescent ginger tablet solution. Conclusions: Although the antifungal effect of nystatin was higher and faster than that of ginger-containing effervescent tablets, if necessary, it is possible to use ginger tablets for a longer time to eliminate fungal contaminants from dentures. Ginger-containing effervescent antifungal tablets require 180 minutes to exert their antifungal effect.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90584006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Amir Taherkhani, Zohre Farhadi, Shahab Shahmoradi Dehto, Shokoofeh Jamshidi, Z. Bayat, S. Shojaei
{"title":"A Policy Brief on Improving the Prognosis of Patients With Oral Squamous Cell Carcinoma","authors":"Amir Taherkhani, Zohre Farhadi, Shahab Shahmoradi Dehto, Shokoofeh Jamshidi, Z. Bayat, S. Shojaei","doi":"10.34172/ajdr.2023.1699","DOIUrl":"https://doi.org/10.34172/ajdr.2023.1699","url":null,"abstract":"","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78384604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A non-common case of unilateral fusion between the left upper central tooth and the supernumerary deciduous tooth, which also has an extra maxillary impacted tooth, was reported in the present study. The patient was a 9-year-old Iranian boy. The left lateral maxillary tooth was found during the oral examination. In the radiographic presentations, the fused teeth showed separate roots, pulpal chambers, and separate root canals. Delayed eruption of the first and second maxillary permanent incisors was experienced due to the presence of an extra impacted tooth. In the management of this condition, both the deciduous fused teeth and extra impacted teeth were removed, and an appointment was scheduled for three months to check for spontaneous tooth eruption.
{"title":"Concurrence of Maxillary Fused Primary Central Incisor With Permanent Supernumerary Tooth: A Case Report","authors":"Fahimeh Daneshyar, Shaghayegh Golshani, Zahra Bagheri, Soudeh Tayebi, Zahra Khosravi","doi":"10.34172/ajdr.2023.553","DOIUrl":"https://doi.org/10.34172/ajdr.2023.553","url":null,"abstract":"A non-common case of unilateral fusion between the left upper central tooth and the supernumerary deciduous tooth, which also has an extra maxillary impacted tooth, was reported in the present study. The patient was a 9-year-old Iranian boy. The left lateral maxillary tooth was found during the oral examination. In the radiographic presentations, the fused teeth showed separate roots, pulpal chambers, and separate root canals. Delayed eruption of the first and second maxillary permanent incisors was experienced due to the presence of an extra impacted tooth. In the management of this condition, both the deciduous fused teeth and extra impacted teeth were removed, and an appointment was scheduled for three months to check for spontaneous tooth eruption.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84919572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Jazaeri, Shahrbanoo Radi, M. Hajilooi, M. Seifrabiei, Aref Esmaeili
Background: According to the high prevalence of iron (Fe) deficiency anemia, it is highly important to reach simple and cost-effective methods for accurate diagnosis. Considering that saliva, as a diagnostic substance is of great value, the present study aimed to compare the amount of salivary Fe and total iron-binding capacity (TIBC) levels of patients with Fe deficiency anemia and healthy individuals. Methods: In this descriptive-analytic cross-sectional study, thirty 20-40-year-old women participated in case (patients with anemia) and control (healthy individuals) groups. After collecting the serum and saliva samples of each participant, Fe and TIBC levels were measured in µg/dL. Data were analyzed using SPSS with Kolmogorov-Smirnov, t test and Pearson correlation tests at the significant level of 0.05. Results: The mean age of the participants of the case and control groups was 31.25 and 30.6, respectively. The average amounts of salivary Fe and TIBC of patients with Fe deficiency were 28.60 and 610.00 µg/dL, respectively. Further, the means of salivary Fe and TIBC of the control group were 78.80 and 290.00 µg/dL, respectively. Based on the results, the serum Fe and TIBC of anemic patients were 27.05 and 589.70 µg/ dL, whereas the means of the serum Fe and TIBC of the control group were 80.27 and 286.80, respectively. There were significant differences between both salivary and serum values of the Fe and TIBC of case and control groups (P<0.05). Furthermore, the relationship between the serum and salivary levels of Fe and TIBC were positive and significant (P<0.05). Conclusions: Based on the results of the present study, significant changes were found in the salivary amount of the Fe and TIBC of patients with Fe deficiency anemia corresponding to the serum levels of Fe and TIBC, thus saliva could be considered as a diagnostic substance for the detection of Fe deficiency anemia.
{"title":"Comparison of Salivary Iron and Total Iron-Binding Capacity Levels Between Patients With Iron Deficiency Anemia and Healthy Individuals","authors":"M. Jazaeri, Shahrbanoo Radi, M. Hajilooi, M. Seifrabiei, Aref Esmaeili","doi":"10.34172/ajdr.2023.513","DOIUrl":"https://doi.org/10.34172/ajdr.2023.513","url":null,"abstract":"Background: According to the high prevalence of iron (Fe) deficiency anemia, it is highly important to reach simple and cost-effective methods for accurate diagnosis. Considering that saliva, as a diagnostic substance is of great value, the present study aimed to compare the amount of salivary Fe and total iron-binding capacity (TIBC) levels of patients with Fe deficiency anemia and healthy individuals. Methods: In this descriptive-analytic cross-sectional study, thirty 20-40-year-old women participated in case (patients with anemia) and control (healthy individuals) groups. After collecting the serum and saliva samples of each participant, Fe and TIBC levels were measured in µg/dL. Data were analyzed using SPSS with Kolmogorov-Smirnov, t test and Pearson correlation tests at the significant level of 0.05. Results: The mean age of the participants of the case and control groups was 31.25 and 30.6, respectively. The average amounts of salivary Fe and TIBC of patients with Fe deficiency were 28.60 and 610.00 µg/dL, respectively. Further, the means of salivary Fe and TIBC of the control group were 78.80 and 290.00 µg/dL, respectively. Based on the results, the serum Fe and TIBC of anemic patients were 27.05 and 589.70 µg/ dL, whereas the means of the serum Fe and TIBC of the control group were 80.27 and 286.80, respectively. There were significant differences between both salivary and serum values of the Fe and TIBC of case and control groups (P<0.05). Furthermore, the relationship between the serum and salivary levels of Fe and TIBC were positive and significant (P<0.05). Conclusions: Based on the results of the present study, significant changes were found in the salivary amount of the Fe and TIBC of patients with Fe deficiency anemia corresponding to the serum levels of Fe and TIBC, thus saliva could be considered as a diagnostic substance for the detection of Fe deficiency anemia.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78461245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Firouzmanesh, Abbas Farmany, M. Farhadian, Vahid Mollabashi
Background: Plaque accumulation and bond failure are the drawbacks of fixed orthodontic treatment. Titanium dioxide (TiO2 ) could be added to orthodontic composite as an antimicrobial agent, but it may change its mechanical properties. The aim of this study was to evaluate the mechanical properties of orthodontic composite modified by TiO2 nanoparticles (NPs) after 10000 cycles of thermocycling. Methods: Overall, 50 intact human premolars (extracted for orthodontic treatment) were used in this study. The orthodontic composite containing TiO2 NPs (1% wt) was prepared and used for the bonding of brackets. The bracket/tooth shear bond strength (SBS) was measured by using a universal testing machine before and after 10000 cycles of thermocycling at 5 and 55° C (dwell time=30 seconds). Eventually, the obtained data were analyzed by Student’s t test with the Excel software (significance level≤0.05). Results: After thermocycling, the average SBS of TiO2 containing and control group was 11.43±5.18 MPa and 13.46±5.17 MPa, respectively. The difference in the SBS of the two groups after thermocycling was not significant (P=0.7). The SBS of both groups decreased after thermocycling; however, the reduction was lower in the group with TiO2 than in the control group. Conclusions: TiO2 -containing composite can be used as an antimicrobial agent in high risk of caries patients without deteriorating the mechanical properties.
{"title":"Effect of Incorporating Titanium Dioxide Nanoparticles (1%) on Shear Bond Strength of Orthodontic Composites: An In Vitro Study","authors":"M. Firouzmanesh, Abbas Farmany, M. Farhadian, Vahid Mollabashi","doi":"10.34172/ajdr.2023.1635","DOIUrl":"https://doi.org/10.34172/ajdr.2023.1635","url":null,"abstract":"Background: Plaque accumulation and bond failure are the drawbacks of fixed orthodontic treatment. Titanium dioxide (TiO2 ) could be added to orthodontic composite as an antimicrobial agent, but it may change its mechanical properties. The aim of this study was to evaluate the mechanical properties of orthodontic composite modified by TiO2 nanoparticles (NPs) after 10000 cycles of thermocycling. Methods: Overall, 50 intact human premolars (extracted for orthodontic treatment) were used in this study. The orthodontic composite containing TiO2 NPs (1% wt) was prepared and used for the bonding of brackets. The bracket/tooth shear bond strength (SBS) was measured by using a universal testing machine before and after 10000 cycles of thermocycling at 5 and 55° C (dwell time=30 seconds). Eventually, the obtained data were analyzed by Student’s t test with the Excel software (significance level≤0.05). Results: After thermocycling, the average SBS of TiO2 containing and control group was 11.43±5.18 MPa and 13.46±5.17 MPa, respectively. The difference in the SBS of the two groups after thermocycling was not significant (P=0.7). The SBS of both groups decreased after thermocycling; however, the reduction was lower in the group with TiO2 than in the control group. Conclusions: TiO2 -containing composite can be used as an antimicrobial agent in high risk of caries patients without deteriorating the mechanical properties.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82311869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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