Arash Sarrafzadeh, Maryam Mohebiniya, Soheila Jadidi,
Volume 36, Issue 0 (5-2023)
Abstract
Background and Aims: The incisive canal cyst also known as nasopalatine duct cyst (NPDC) is the most common developmental non odontogenic cyst and it is usually asymptomatic with a well corticated round, ovoid or in some cases unique heart shaped radiolucent radiographic finding. Its accurate diagnosis from odontogenic cysts, odontogenic tumor, and benign non-odontogenic tumors using clinical and radiographic findings leads to eradication of pathologic condition with minimum residual defects and patient discomfort. In this case report, the clinical and radiographic findings of a 60-year-old female with the chief complaint of swelling was reviewed. There were typical histologic and radiographic findings related to nasopalatine duct cyst. The surgical management is explained. Follow up visit showed satisfactory healing and no dehiscence. It could be suggested that heart shaped radiographic finding in 3-D reconstructed image in the maxillary midline would be a good predictor for NPDC.
Ahmadreza Mohammadi, Malihe Safari, Maneli Houshyar, Maryam Mohebiniya,
Volume 37, Issue 0 (3-2024)
Abstract
Background and Aims: Idiopathic osteosclerosis is an asymptomatic local growth of cortical bone and is discovered incidentally on panoramic radiographs. The purpose of this study is to evaluate the frequency of idiopathic osteosclerosis and its radiographic features in panoramic images of patients referred to the Department of Maxillofacial Radiology, Faculty of Dentistry, Arak University of Medical Sciences (Iran) in 2022-2023.
Materials and Methods: In this cross-sectional study, 460 panoramic images from the radiology department of Arak Faculty of Dentistry were randomly selected and analyzed. The demographic information of patients, frequency of idiopathic osteosclerosis, location, and also its relationship with adjacent teeth in terms of proximity to lamina dura and periodontal ligament and radiographic features in terms of size and morphology were evaluated. The data were analyzed using the SPSS24 software.
Results: Panoramic images of 460 patients (266 men and 194 women) with an average age of 38.12 (11.75) years were evaluated. The frequency of idiopathic osteosclerosis was 6.1% (28 images). 92.9% of the lesions were in the lower jaw and 46.4% of them were near the premolar teeth. In 39.3% of the cases, the lesion was adjacent to the periodontal ligament and laminadora of the tooth. In 3.6% of the cases, it was associated with a small displacement of the adjacent tooth, and 17.9% was associated with tooth root resorption. According to the results, there was no correlation between the incidence of this lesion with age and gender (P>0.05).
Conclusion: According to the findings of this study, the frequency of idiopathic osteosclerosis in the patients referred to Arak dental school was reported as 6.1%. Most of these lesions were observed in the back of the lower jaw and thus, it is important to be able to distinguish this lesion from the radiopaque lesions of the jaw which need treatment.
Ali Najarchi, Maryam Mohebiniya, Mohsen Shamsi,
Volume 38, Issue 0 (4-2025)
Abstract
Background and Aims: Given the risks of repeated exposure to ionizing radiation in dentistry and its potential adverse effects on the health of patients, staff, and students, adherence to radiation protection principles is a fundamental priority in this profession. This study aimed to assess the knowledge, attitudes, practice, and behavioral predictors of dental students at Arak University of Medical Sciences regarding the radiation protection principles in 2024.
Materials and Methods: This cross-sectional analytical study was conducted as a census on 120 dental students during October 2024 to March 2025. Data were collected using a structured questionnaire, which included sections on demographic information, knowledge assessment (maximum score: 20), attitudes (maximum score: 55), and practice (maximum score: 16). The questionnaire used was a revised version of a standard instrument, the validity (CVR=0.62, CVI=0.79) and reliability (Cronbach's alpha >0.7 for all sections) of which were measured and confirmed. Data analysis was performed using SPSS27, with analytical tests including the Mann-Whitney U test, Kruskal-Wallis test, Spearman’s correlation, and predictive practice with asses test of linear regression.
Results: The number of 120 students with mean age of participants 23.59 ± 3.13 old years and 51.7% were male. The mean scores were as follows: knowledge (9.69 ± 2.51), attitude (27.88 ± 3.05), and practice (12.60 ± 1.06). A significant difference in knowledge was observed between the male and female students (P=0.035), which the male students’ scoring was higher. No significant differences were found in the attitude or practice between genders (P>0.05). Factors such as place of residence (dormitory or non dormitory), prior radiation protection training, age, GPA, and admission year showed no significant association with the knowledge, attitude, or practice (P>0.05). Based on the regression model, the greatest predictors of student performance were age (R2=0.247, P=0.015) and grade point average (R2=0.282, P=0.003).
Conclusion: While academic training effectively imparts knowledge of radiation protection, translating this knowledge into practical performance remains moderate and thus, highlighting the need for advanced hands-on training courses.
