Introduction and objective: in recent years internet has turned to be one of the most popular global medias due to its unique qualities such as easy accessibility, utilization convenience, users' obscurity and low cost. This study targets at examining the personality types' effects on internet anxiety in students of dental faculty in Medical University of Kerman. Methodology:This cross-sectional study was conducted on 235 dental students who were selected through census sampling method. Data collecting tools consisted of standard internet anxiety questionnaire (including 20 items), personality type's questionnaire (including 25 items), demographic characteristics (age, sex, entrance year) and also eight related questions via internet.The collected data were entered the computer and analyzed via SPSS statistics software version 18 and linear regression statistics test and t at the significance level of 5%. M. Torabi et al. J Fundam Appl Sci. 2017, 9(1S), 814-823 815 There were a significant correlation between the mean score of internet anxiety and year of education and hours spent using internet (p=0.028, p=0.017). There was significant correlation between personality type and internet anxiety as well (p= 0.016). Conclusion:Based on this study internet anxiety was lower than moderate in dental school students and type A students who have characteristics like fast and quick, nervous and hottempered, biased life style, anxious, impatient and being competitive had more anxiety.

Objective: To evaluate the association of publication bias with obtaining positive or negative results in the Doctoral thesis of Iranian dental schools. Material and Methods: In this crosssectional study firstly we collected all the abstracts of Doctoral and post-doctoral thesis belonging to electronic archives of five Iranian dental schools there after the analytic abstracts were included and in the second phase, we try to search resulting articles with searching in Google Scholar. Data were analyzed using descriptive statistics and a Chi-squared test, Pearson's correlation coefficient, Fisher's exact test, and Logistic Regression. Results: Out of 483 reviewed thesis abstracts 269 cases were included (55.7%) 153 of which were accessible as papers (56.9%). In 67.7% of the reviewed thesis, positive results were obtained. There were significant relationships between publishing and publishing in international journals with two variables: Study type and field (p<0.05). In vitro studies, clinical trials and studies in the field of oral diseases and periodontics had a higher rate of publication in the form of articles. Retrospective studies and those in the fields of endodontics and oral pathology had a higher rate of publication in journals with international indexes. Using regression logistic model showed that the probability of publishing positive data was greater (18-31%) than negative data. It was shown that the specialty field affected the relationship between the chance of publication of the article and the positive/negative results (p=0.008), increasing the chance of publication to 31%. Conclusion: There was publication bias in reviewed dental articles.