system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Kim et al classification system deals with
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The correct answer is  Kim et al classification of isthmus
Classification of the isthmus : by Hus & Kim et al
Type I - Is two or three canals with no notable communication.
Type II - Is two canals that possess a definite connection between the two main canals.
Type III - Is three canals that possess a definite connection between them.
Type IV- Is when the canals extend into the isthmus area.
Type V- Is the true connection or corridor throughout the section.