No abstract

No abstract

The aim of this study was to investigate whether there is any association between inflammation and the expression of markers of cell cycle entry (Ki-67 and MCM-2) in dental follicle (DF) of asymptomatic impacted teeth and odontogenic cysts. The study consisted of 70 DFs and 20 odontogenic cysts (radicular cyst (RC), dentigerous cyst (DC) and keratocytic odontogenic tumor (KCOT) located at posterior mandibular region. Histological findings of inflammation for all specimen and mucous cell prosoplasia, squamous metaplasia, glandular epithelium for all DFs were stained with hematoxyline and eosin, periodic acid schiff, alcian blue, and mucin. Epithelial cell proliferation was determined by using immunohistochemical labeling for Ki-67 and MCM-2. The histologic examinations showed 16% mucous cell prosoplasia, 54% squamous metaplasia, 20% glandular epithelium, 37% inflammation. Inflammation was detected in all RCs and %62 in DF, %43 in DC and KCOT. Positive correlation was found between the inflammation of DF and odontogenic cysts (P < 0.01). The mean Ki-67 and MCM-2 expressions were found 9, 64 ± 5, 99 and 6, 34 ± 3, 81 in DF, 11, 85 ± 9, 01 and 13, 6 ± 9, 94 in odontogenic cysts, respectively. While the mean Ki-67 expressions were statistically significant in DF and KCOT (P < 0.01), MCM-2 were significant in RC and KCOT (P < 0.01). MCM-2 expresion in RCs were statistically significant than KCOT (P < 0.01). The results of this study indicated that the higher MCM-2 expressions in RC than the KCOT might be related to the inflammation and this protein might be more sensitive to inflammation.

Purpose: This study aimed to carry out a city-wide survey to evaluate undergraduate students' opinions on their oral surgery training by measuring their self-confidence. Materials and Methods:A cross-sectional survey of 383 3rd year, 412 4th year and 363 5th year undergraduate dental students from six dental schools in Istanbul with a mean age of 22.73 ± 1.55 was conducted towards the end of the academic year. A web link to the questionnaire was sent to the contact person at the participating dental schools. The questionnaires were anonymously evaluated. Descriptive statistics were calculated, and Chi-square tests were performed to examine the data. A P-value of <.05 was considered to be statistically significant. Results:In total, 1158 responses were returned, representing 67% of the overall students in the 2018-2019 academic year. The male respondents were significantly more self-confident than females in the general aspects of surgical skills. More than half of the respondents (53%) felt confident in oral surgery knowledge to undertake independent practice. Although 5th year respondents felt more confident in the general aspect of the questionnaire, their ability of differentiation of odontogenic and non-odontogenic pain was lower than their counterparts. The majority (86%) of the participants disagreed that the only knowledge required for oral surgery was that of tooth and jaw anatomy. Conclusion:This survey revealed perceived confidence in tooth and retained root extraction. The male respondents were found to be more self-confident. There is a need for improvement in surgical skills, recognition of malignancies and differentiation of the origin of the pain. K E Y W O R D Sanatomical knowledge, dental students' opinion, oral surgery teaching, self-confidence

Purpose This study evaluated students’ perceptions of their self-confidence regarding aspects of their undergraduate oral and maxillofacial surgical training. It further aimed to develop a reliable Turkish version of the questionnaire originally developed by the Association of British Academic Oral Maxillofacial Surgeons (ABAOMS) Education Committee. Methods A cross-sectional survey of 40 fourth-year and 47 fifth-year dentistry students of Yeditepe University Faculty of Dentistry in Turkey with a mean age of 23.30 ± 1.50 was conducted in January and February 2018. The ABAOMS questionnaire was adapted to the Turkish language and culture. The items were organized in five domains (general information, self-confidence in oral surgery, role of outreach, anatomy knowledge in relation to oral surgery, and career aspirations) with most response options on a five-point Likert-type scale. Reliability was assessed through an internal consistency analysis and a test-retest approach. Descriptive statistics, independent samples t -tests, and Chi-squared for contingency tests were used to examine the data. Results Cronbach’s alpha coefficient on the questionnaire was 0.89. The responses reflected general agreement among the respondents. Females were significantly more self-confident than males. Although the fifth-year respondents were more self-confident than the fourth-year respondents on items regarding anatomy knowledge, fourth-year respondents were more self confident in forceps extractions. Other than that no major differences in self-confidence were found between the two groups. Conclusion Though self-confidence was high regarding extraction of teeth and retained roots, the participants of this study lacked self-confidence in performing surgical extractions and its related procedures, recognition of malignancies, and ability to differentiate between pain of odontogenic or non-odontogenic origin. Female students were relatively more self-confident. Teaching should focus on practical applications that support students’ sense of self-confidence in their abilities. The Turkish version of the questionnaire was a reliable instrument.