The present study was aimed to evaluate the changes in the oral and dental health attitudes and behaviors of the dental students in the city of Baghdad/ Iraq during their dental study courses. A self-assessment 16-item survey questionnaire was distributed among 659 students at different dental study stages. The samples were taken from the Dental Faculty, Al-Rafidain University College, Baghdad. Totally 396 pre-clinical (1st, 2nd and 3rd stages of dental collage) and 263 clinical students (4th and 5th stages of dental collage) with a mean age of 18-24 participant in this study. The questionnaire formula involved 3 demographic questions and 13 questions on the dental attitudes and behaviors of the students. The statistical analysis in this study was based on Chi-square and logistic regression models. The average score of the 4th and 5th stage students was higher than that of the 1st, 2nd and 3rd stage students remarkably. Statistically remarkable differences were present between the (1st, 2nd and 3rd stages) and the (4th and 5th stages) dental students for using dental floss and mouthwash regularly, presence of untreated carious teeth, smoking habit, deciding the treatment they need, gum bleeding on brushing, seeking dental visits and dental health rating. The results of this study showed the relatively improved oral and dental health attitudes of Iraqi dental students throughout their study years. This study confirmed that the overall oral health attitudes and behavior of Iraqi dental students was good and improved with rising level of education. However, there were deficits in few areas which require extra concerning and more properly established oral and dental health educational programs to rise the students’ behavior towards oral health.