Crown prep margin width: 0.5–1.5 mm
OslerPress guide · 5 min read
“The cervical margin is > 0.5 mm but ≤ 1.5 mm in width.” “The cervical margin is > 1.5 mm but ≤ 2.0 mm in width.” “A. The cervical margin is > 2.0 mm in width. B. The cervical margin is < 0.5 mm in width.”
Figure 1. Margin width is measured across the finish line.
Smooth, continuous, rounded
Line angles should be rounded and the finish line continuous all the way round; an interrupted chamfer is the most common miss in the lessons.
0.5–1.5 mm with a continuous line scores as within.