8. Which one of the following is false? a. Cleaning comprises the removal of all potentially pathogenic contents from the root canal system. b. Shaping is the establishment of a specifically shaped cavity which performs the dual role of three dimensional progressive access into the canal. c. Cleaning creating an apical preparation which will permit the final obturation instruments and materials to fit easily. d. Principles of cleaning and shaping are; cleaning and shaping of root canal, disinfection and obturation. e. Shaping creating an apical preparation which will permit the final obturation instruments and materials to fit easily.

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8. Which one of the following is false? a. Cleaning comprises the removal of all potentially pathogenic contents from the root canal system. b. Shaping is the establishment of a specifically shaped cavity which performs the dual role of three dimensional progressive access into the canal. c. Cleaning creating an apical preparation which will permit the final obturation instruments and materials to fit easily. d. Principles of cleaning and shaping are; cleaning and shaping of root canal, disinfection and obturation. e. Shaping creating an apical preparation which will permit the final obturation instruments and materials to fit easily.

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The false statement is:<br /><br />a. Cleaning comprises the removal of all potentially pathogenic contents from the root canal system.<br /><br />Explanation: Cleaning in endodontics involves the removal of debris, necrotic tissue, and microorganisms from the root canal system, but it does not necessarily remove all potentially pathogenic contents. The goal is to reduce the microbial load to a level that will not cause further inflammation or infection.

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