Dental Tobacco Chewing/ smoking is the most common predisposing cause of which of the following: A Cyclic neutropenia B Juvenile periodontitis C Necrotising periodontitis D Necrotising ulcerative gingivitis (ANUG) 💡 Explanation Tobacco Chewing/ smoking is the most common predisposing cause of which of the following: ✓ Correct Answer: D. Necrotising ulcerative gingivitis (ANUG)