The ideal length of core in the fabrication of crown and core of endodontically treated tooth is,
A. 1.5 of crown length
B. The length of the crown
C. 2/3 tooth/root length
D. ½ root length
A. 1.5 of crown length
B. The length of the crown
C. 2/3 tooth/root length
D. ½ root length