29:55

WORKING LENGTH DETERMINATION

11:56

THEORIES OF DENTAL CARIES

10:27

PRR(PREVENTIVE RESIN RESTORATION )

15:37

NUREMBERG CODE || ETHICS IN DENTISTRY AND MEDICINE || NAZI EXPERIMENT

24:24

EPIDEMIOLOGY OF DENTAL CARIES

12:37

CARIOGRAM

31:34

WATER PURIFICATION(POTABLE WATER)

5:51

Don't let your doctor do this to you!