Dental According to Kim and colleagues which of the following describe type IV isthmus? A Two canals with a definite connection between them B Complete or incomplete isthmus between three or more canals C Very short, complete Isthmus between two canals D Two or three canal openings without visible connections 💡 Explanation According to Kim and colleagues which of the following describe type IV isthmus? ✓ Correct Answer: B. Complete or incomplete isthmus between three or more canals