Tanawan Manwiwattanakul และ Piyanee Panitvisai. (2013) THE QUALITY OF ROOT FILLING IN MANDIBULAR MOLARS WITH ISTHMUSES OBTURATED BY THREE DIFFERENT TECHNIQUES. Chulalongkorn University:ม.ป.ท.Tanawan Manwiwattanakul และ Piyanee Panitvisai. 2013. THE QUALITY OF ROOT FILLING IN MANDIBULAR MOLARS WITH ISTHMUSES OBTURATED BY THREE DIFFERENT TECHNIQUES. ม.ป.ท.:Chulalongkorn University;Tanawan Manwiwattanakul และ Piyanee Panitvisai. THE QUALITY OF ROOT FILLING IN MANDIBULAR MOLARS WITH ISTHMUSES OBTURATED BY THREE DIFFERENT TECHNIQUES. ม.ป.ท.:Chulalongkorn University, 2013. Print.