Crown prep dimensions

Question 1

All metal crown

Answer 1

0.5mm to 1.0mm margin & wall reduction
1.0mm (non-functional cusp)
1.5mm (functional cusp)

Question 2

Ceramo-metal crowns

Answer 2

1.2mm to 1.5mm reduction for aesthetics
1.0mm non-aesthetic reduction & margins
1.5mm (non-functional cusp)
2.0mm (functional cusp)

Question 3

All-ceramic crowns

Answer 3

1.2mm to 1.5mm wall reduction
1.0mm margin reduction
1.5mm (anteriors) / 2.0mm (posteriors) occlusal reduction

Question 4

Functional cusps on Mx and Md

Answer 4

FLUP - facial lower, upper palatal
Mx molar - palatal
Md Molar - buccal