40
Participants
Start Date
March 1, 2020
Primary Completion Date
March 1, 2021
Study Completion Date
July 1, 2021
monolithic zirconia single posterior crowns with deep chamfer finish line
deep chamfer of 1 mm average thickness for cervical finish line, a convergence angle of 6-12° on each side and up to 20° total, in some studies, is acceptable and occlusal reduction of 1,5-2 mm
monolithic zirconia single posterior crowns with vertical finish line
using special round-ended 2 degrees tapered diamond burs a non-working tip (batt bur). It has coronal diameter of 1.2 mm, apical diameter of 0.7 mm, and non- cutting end of 1 mm, which reduces or avoids damage to the connective attachment and allows a tooth-guided preparation procedure
Cairo University, Cairo
Cairo University
OTHER