By organizing the results of study questioned 1,620 dentists working nationwide in 2005, we concluded the followings. 1. The smoking rate of dentist is 29.69%. 2. 60.9% of current dentist smokers responded that they started smoking at the age of 20-24, during their dental school ages. 3. 67.41% of respondents have no idea of cyber antismoking campaign launched by Korean Dental Association, and 94.07% of respondents didn t receive formal education about smoking cessation. 4. 59.01% of respondents want to educate patients about smoking cessation in dental clinics but couldn t help putting it off for practical reasons. The reasons include their busy office hour(36.30%), difficulties in collecting proper smoking cessation documents(25.10%), and lack of their own knowledge in renunciation of smoking. (18,83%) 5. As dental healthcare personnels, they agreed with their status and duty of leading role in national renunciation of smoking. (R>80%) 6. 83.34% of dentists agreed that if educational antismoking program is arranged by Korean Dental Association, they should receive the education.