The purpose of this study was to develop a motivational interviewing (MI) training program to improve competency in communication and to effect the evaluated changes that would occur in dental students' counseling techniques as result of the training in the program. The study proceeded through the program via role-play practice, which was explained effectively during the MI program training process. A convenience sample of 43 fourth-year dental hygiene students was recruited. Twenty-two students were randomly assigned to the intervention group and 21 to the control group in the order of recruitment. The theoretical lecture was delivered over 3 hours and the practice was done in parallel by applying cases occurring in clinic settings. The practice was technical training, partner practice, and small group practice. The intervention group received three hour MI lecture while the control group received no lecture. Evaluation through role-play practice was separated according to "researcher's viewpoint," "counselor's role viewpoint," and "patient's role viewpoint." The results of the analysis showed that the intervention group had higher MI skills and ability than the control group. Furthermore, program participants showed positive impressions to the MI training program. The use of coaching sessions improved the MI techniques and counseling skills of dental hygiene students learning MI. The effect of the application of the MI training program was that the MI training improved counseling skills and interviewing abilities. Moreover, continuous training and feedback enhanced MI techniques and core skills. Training using lectures in parallel with practice rather than education through theory alone improved students' techniques. Application of role play through the combined method of the MI program was confirmed by an effective training method. In Korea, the National Competency Standard (NCS) was developed in 2002, and competency-based education is provided at higher education levels 1) . Recently, the dental hygiene industry has also introduced classes on communication, differing significantly from the subjects of dentistry or dental hygiene in an effort to cultivate competencies that can be used in the field. Ryu et al. 4) reported that Korean dental hygiene students have a strong Moreover, given similar levels of effects, it was reported that it would be clinically more efficient to employ role-play, given its potential for reducing costs and easy applications. Therefore, role-play practice is often employed in clinical studies as it is easy to apply 8,18) .Given that there have been spotlights on the communication competency training, it is necessary to provide such training at the college level. As such, this study aimed to apply the principle of MI training on dental hygiene, without its application to any other models. Moreover, this study aimed to apply the MI training program for dental hygiene students to assess its effects.
Materials and Methods
Study subjectsThe subjects of this study were fourth-year college ...