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10. Which one of the mechanical objectives of root canal preparation? a. Making the preparation in multiple planes which introduces the concept of "flow". b. Procedure should be confined to the root canal space. c. All infected pulp tissue , bacteria and their by -products should be removed from the root canal. d. Sufficient space for intracanal medicaments and irrigants should be created. e. Evaluate the particular tooth has favorable prognosis.

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10. Which one of the mechanical objectives of root canal preparation? a. Making the preparation in multiple planes which introduces the concept of "flow". b. Procedure should be confined to the root canal space. c. All infected pulp tissue , bacteria and their by -products should be removed from the root canal. d. Sufficient space for intracanal medicaments and irrigants should be created. e. Evaluate the particular tooth has favorable prognosis.

10. Which one of the mechanical objectives of root canal preparation? a. Making the preparation in multiple planes which introduces the concept of "flow". b. Procedure should be confined to the root canal space. c. All infected pulp tissue , bacteria and their by -products should be removed from the root canal. d. Sufficient space for intracanal medicaments and irrigants should be created. e. Evaluate the particular tooth has favorable prognosis.

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The correct answer is:<br /><br />c. All infected pulp tissue, bacteria, and their by-products should be removed from the root canal.<br /><br />Explanation: The mechanical objective of root canal preparation is to remove all infected pulp tissue, bacteria, and their by-products from the root canal. This is done to create a clean and sterile environment within the tooth, which is essential for the success of the root canal
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