Browsing by Author "Dahal, Sirjana"
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Publication Classification of Impacted Third Molars on Conebeam Computed Tomography Images(Nepal Health Research Council, 2025) Niroula, Deepa; Dahal, Sirjana; Poudel, Kalpana; Singh, Ashutosh Kumar; K.C, KrishnaBackground: An important anatomical factor in injuries to the inferior alveolar nerve is the spatial relationship between the mandibular canal and the corresponding third molars. This study was designed to classify the anatomic three-dimensional relationship between mandibular third molars and the mandibular canal on cone-beam computed tomography mages. Methods: A cross-sectional study was conducted by using CBCT images of 100 individuals visiting the Dental Outpatient Department of X hospital from Jan 2022 – Oct 2022. The images were used to classify the threedimensional relationship between the mandibular canal relative to the roots of the mandibular third molar according to Liqun Gu et al 2018 classification. In this classification, four anatomical positions were considered: buccal, lingual, apical and inter-radicular. The second factor considered was the contact and non-contact relationship between the inferior alveolar nerve canal and the mandibular nerve. The data was analyzed via SPSS version 20. Chi square test was performed to determine the contact relationship of the mandibular third molar root with the mandibular canal. Results: Most of the mandibular canals observed via CBCT (45.0%) were located on the buccal side of the mandibular third molar followed by the apical side (26.0%), between the roots (23.0%) and very few (6.0%) on the lingual side. A significant association was found between the position of the mandibular third molar and the mandibular canal (p<0.001) when the position was lingual and interradicular. Conclusions: The findings of this study revealed that the majority of mandibular third molars were located on the buccal side. There was a significant relationship between the position of the mandibular third molar and the mandibular canal. Keywords: Cone-beam computed tomography; impaction; mandibular canal; third molar.Publication Prevalence of Dentinal Hypersensitivity among Dental Patients Visiting Tertiary Care Center: An Observational Study(Nepal Medical Association, 2025) Ghimire, Saru; Ghimire, Sagar; Dahal, Samarika; Dahal, Sirjana; Paudel, Neetika; Paudel, PrayashAbstract Introduction: Dentinal hypersensitivity is a widespread condition characterized by a brief, sharp pain arising from exposed dentin in response to external stimuli, which cannot be linked to any other dental conditions. This study aimed to estimate the prevalence of dentinal hypersensitivity among patients attending a tertiary health care center. Methods: A observational cross-section study was conducted, involving 376 patients aged 10-70 years who visited a tertiary care center. Convenience sampling was employed to select participants, and the prevalence of dentinal hypersensitivity was assessed through a questionnaire. Data were collected from the Department of Oral Medicine and Radiology after obtaining ethical approval Institutional Review Committee (Reference number: 385 (6-11) E2 079/80). The analysis was performed using Microsoft Excel, and descriptive statistics were reported . Results: There were 376 patients in the study and the prevlence of dentin hypersensitivity wasa 236 (62.77%; CI 95%: 57.66%-67.67%). Among those diagnosed, 138 (73.02%) were male, and 98 (52.41%) were female. The age-specific prevalence was found to be 30 (50.85%) in patients aged 10-19 years, 73 (63.48%) in those aged 20-29 years, 42 (53.16%) in patients aged 30-39 years, 23 (51.11%) in those aged 40-49 years. Conclusions: This study identified a high prevalence of dentin hypersensitivity among the patient population, with variations observed across different age and sex groups.Publication Self-Assessment of Oral Health Status among Adults Residing at Chautara, Sindhupalchowk, Nepal(Nepal Health Research Council, 2025) Dahal, Sirjana; Khapung, Anju; Dahal, Samarika; Poudel, PrakashBackground: Little is known about attitudes and practices regarding oral health of developing countries. This study aimed to determine the self-assessment of oral health status among adults residing at Chautara, Sindhupalchowk, Nepal. Methods: A descriptive cross-sectional study was conducted among 440 adults selected by convenience sampling method. Interview using WHO oral health questionnaire for adults 2013 was taken after receiving informed consent. Data were entered in Microsoft Excel Sheet and analysed in SPSS version 24. Mean, standard deviation, frequency and percentage were calculated. Results: Majority had positive assessment regarding their teeth (366, 83.18%) and gums (384, 87.27%). Many (417, 94.77%) cleaned their teeth ?one times a day. Majority used toothbrush (434, 98.64%) and paste (411, 93.41%) for cleaning their teeth. Some, (184, 41.82%) visited a dentist at least once in their lifetime and the main reason was pain or trouble in teeth/gums/mouth (94, 51.09%). Very often, they faced problems chewing (31, 7.0%) and biting (27, 6.1%) foods. They mostly consumed tea with sugar (132, 30.0%) and biscuits, cakes and cream cakes (59, 13.4%) several times a day. Most of them smoked cigarettes every day (93, 21.1%), followed by tobacco chewing (67, 15.2%). In the past 30 days, 179 (40.7%) drank one or more drinks of alcohol. Conclusions: The study findings showed that most of the adult residents of Chautara, had positive self-assessment of their oral health status. However, they faced many oral health problems which may be due to their unhealthy lifestyle suggesting need for oral health awareness programs. Keywords: Adults; oral health; self-assessment.