[ABSTRAKLatar Belakang: Pendidikan kesehatan gigi mulut berperan penting untuk pencegahan komplikasi diabetes terhadap gigi mulut. Tujuan: Mengetahui perbedaan pengetahuan pada penderita diabetes melitus tipe 2 sebelum dan sesudah diberikan edukasi. Metode: Subjek penelitian diberikan perlakuan berupa buku berisi materi komprehensif kesehatan gigi mulut dilakukan evaluasi pra dan pasca perlakuan dengan kuesioner dan hasil evaluasi dianalisis secara statistik. Hasil: Terdapat perbedaan tingkat pengetahuan signifikan sebelum dan sesudah pemberian perlakuan mengenai dampak diabetes terhadap gigi mulut sebesar 30,75%. Kesimpulan: Terdapat perbedaan pengetahuan penderita diabetes melitus tipe 2 saat sebelum dan sesudah edukasi, ditandai dengan peningkatan pengetahuan dampak diabetes terhadap gigi dan mulut.;Background: Oral health education play an important role to prevent oral complications in diabetic people. ABSTRACTObjective: To investigate the efficacy of oral health education to increase knowledge of type 2 diabetic patients. Methods: This Respondents were given intervention by using comprehensive booklet then knowledge of both groups was evaluated by questionnaire. Results of questionnaire then analyzed using statistical test. Results: There were significant knowledge improvements of education group remarked by the 30,75% improvement on effects of diabetes towards oral health item. Conclusion: There were differences of knowledge before and after education, marked by effects of diabetes towards oral health, Background: Oral health education play an important role to prevent oral complications in diabetic people. Objective: To investigate the efficacy of oral health education to increase knowledge of type 2 diabetic patients. Methods: This Respondents were given intervention by using comprehensive booklet then knowledge of both groups was evaluated by questionnaire. Results of questionnaire then analyzed using statistical test. Results: There were significant knowledge improvements of education group remarked by the 30,75% improvement on effects of diabetes towards oral health item. Conclusion: There were differences of knowledge before and after education, marked by effects of diabetes towards oral health]