Dental The amount of reduction required for a tooth for all metal crown restoration is: A So that there is proper clearance between the teeth B So that the tooth architecture interferes with the arch of rotation C So that the tooth architecture doesn't interferes with the arch of rotation D At least 2mm on all the surfaces 💡 Explanation The amount of reduction required for a tooth for all metal crown restoration is: ✓ Correct Answer: B. So that the tooth architecture interferes with the arch of rotation