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164983 Dental

One of the following statements regarding pin retained restoration is NOT true

APinholes should never be prepared at different levels on the tooth
BA minimum of 0.5 mm clearance should be provided around the circumference of the pin for adequate condensation of the amalgam
CPinhole should located on a flat surface that is perpendicular to the proposed direction of the pinhole
DThe pinhole should be positioned no closer than 1 mm to DEJ and no closer than 1.5 mm to the external surface.
Dental
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