1.Viability and DNA Damage of Buccal Mucosa Cells in Patients Exposed to Panoramic X-ray
Ryna Dwi Yanuaryska ; Afit Aditya Atmoko ; Isti Rahayu Suryani ; Rurie Ratna Shantiningsih
Archives of Orofacial Sciences 2021;16(SUPP 1):43-49
ABSTRACT
Panoramic X-ray is well known to cause DNA damage and induces cellular death. The aim of the
present study was to evaluate the cytotoxicity of radiation exposure from panoramic radiography on
human buccal mucosa cells by assessing the cell viability using the simple-trypan blue exclusion test.
The genotoxicity effect was evaluated by assessing comet assay score. This research included a total of
20 healthy patients who had panoramic radiography for a routine dental examination. Buccal mucosa
cells were collected from all participants before X-ray exposure and at 30 min or 24 h after exposure in
Groups 1 and 2, respectively, and subjected to a comet assay and trypan blue exclusion test to assess
cell viability and DNA damage. Cell viability was calculated as the ratio of live (translucent) to total
counted cells. Comet assay output images were analysed using OpenComet software and a visual score
by measuring the percentages of tail DNA and summing the visual score, respectively. A statistically
significant (p < 0.05) reduce in cell viability was observed at 30 min after exposure, furthermore there is
no more reduction after 24 h. Both comet assay measurements showed a significant (p < 0.05) increase
in the percentage of tail DNA and visual score at 30 min after exposure, then tend to decrease after 24 h
of exposure, although it was not significant (p > 0.05). The results showed that panoramic radiography
interfered cell viability and induced DNA damage in buccal mucosa cells within 30 min after exposure,
but these effects were ceased after 24 h.
Mouth Mucosa--cytology
;
Radiography, Panoramic
2.Factors Influencing Anxiety Levels During Dental Radiographic Examination Among Dental Students
Diah Nofiyanti ; Choirunnissa ; Rellyca Sola Gracea ; Silviana Farrah Diba ; Lastdes Cristiany Friday ; Ryna Dwi Yanuaryska
Malaysian Journal of Medicine and Health Sciences 2023;19(No.5):161-167
Introduction: : Dental anxiety was found to be related to the radiographic procedure and can be influenced by
sociodemographic characteristics of patients such as age, gender, level of education, and provoking factors such
as past dental examination experience. Evaluating the anxiety regarding dental radiographic examination could be
beneficial in ensuring the procedure’s continuance. This study aimed to measure the radiology knowledge among
dental students and its association with anxiety due to dental radiographic examination. Methods: A cross-sectional
study was conducted to collect the data using a questionnaire packet that included a knowledge and anxiety questionnaire, demographic data, and information about the experience of dental radiographic examination. A total sampling of 1st and 2nd year undergraduate and clerkship dental students at the Faculty of Dentistry, Universitas Gadjah
Mada, Indonesia was selected based on inclusion and exclusion criteria. Anxiety-related factors were assessed using
descriptive statistics and multiple linear regression conducted with STATA 15.1. Results: Results showed that knowledge and anxiety were negatively correlated but the correlation was not statistically significant. Gender, radiographic
technique, and presence/absence of a companion during the examination were not correlated with anxiety. Meanwhile, the anxiety level was negatively and significantly correlated with age and examination frequency (p < 0.05).
Multiple linear regression results showed strong evidence that age and examination frequency were the main factors
for predicting anxiety. Conclusion: Although age, radiographic examination frequency, and educational level are
significant bivariate predictors of anxiety, subsequent regression analysis indicated that only age and radiographic
examination frequency influence anxiety.