The length of the tooth is established by:
A. Good undistorted pre-operative x ray
B. Adequate coronal access to all canals
C. Adjustable endo millimetre ruler
D. Definite repeatable plane of reference to anatomical landmark on tooth
E. All of the above
A. Good undistorted pre-operative x ray
B. Adequate coronal access to all canals
C. Adjustable endo millimetre ruler
D. Definite repeatable plane of reference to anatomical landmark on tooth
E. All of the above