This study was conducted to utilize as the fundamental data for the improvement in curriculum, practicum programs and educational facilities of four-year universities with dental hygiene department which have increased rapidly by through analyzing the satisfaction level of dental hygiene students in four-year and three-year colleges with their departments. The findings of the study were as follows: 1. The satisfaction level with their department of dental hygiene students who were surveyed was 3.18 out of possible five points, which was on the average. 2. As for satisfaction level with the departments by educational system, the students who were in four-year colleges in the metropolitan area expressed lower satisfaction than the students who were in local and three-year colleges. The three-year college students were more gratified with the curriculums than the four-year college students(t=2.03, p<0.05), and the latter was more satisfied with the educational facilities(t=-4.12, p<0.001) and interpersonal relationships(t=-3.07, p<0.01) than the former. 3. In the case of the three-year college students, those whose colleges were located in the metropolitan area were more contented with the educational facilities(t=5.28, p<0.001), and there were no significant differences in satisfaction level with other factors. 4. In the case of the four-year college students, the local college students were more contented with the curriculums(t=-5.39, p<0.001), educational facilities(t=-5.18, p<0.001) and the departments(t=-3.98, p<0.001) than their counterparts in the colleges located in the metropolitan area. In terms of satisfaction level with the department of dental hygiene, the four-year college students located in the metropolitan area expressed noticeably lower satisfaction with the curriculums than the local and three-year college students. As a result, the development of each curriculum which is suitable for the four-year course is required, and so is the improvement in the educational facilities as well.