M1 part 7 of 8 · Full gold crown, #30
Cut and score
Photograph the finished prep and score it on the 5 checkpoints, in this order.
Photos
Occlusal, Buccal, Lingual
- Occlusal reduction 1.0–2.0 mm. A miss here: replay step 2, Reduce occlusal table following anatomy
- Axial taper ≤ 12° per wall. A miss here: replay step 4, Axially reduce walls
- Margin and line angles 0.5–1.5 mm. A miss here: replay step 6, Finish continuous chamfer and verify clearance with putty index
- Adjacent tooth No damage to the adjacent tooth. A miss here: replay step 5, Open proximal surfaces with guarded bur
- Putty clearance ≥ 1.0 mm. A miss here: replay step 6, Finish continuous chamfer and verify clearance with putty index
Cut and score
Photograph the finished prep and score it on the 5 checkpoints, in this order.
Photos
Occlusal, Buccal, Lingual
- Occlusal reduction 1.0–2.0 mm. A miss here: replay step 2, Reduce occlusal table following anatomy
- Axial taper ≤ 12° per wall. A miss here: replay step 4, Axially reduce walls
- Margin and line angles 0.5–1.5 mm. A miss here: replay step 6, Finish continuous chamfer and verify clearance with putty index
- Adjacent tooth No damage to the adjacent tooth. A miss here: replay step 5, Open proximal surfaces with guarded bur
- Putty clearance ≥ 1.0 mm. A miss here: replay step 6, Finish continuous chamfer and verify clearance with putty index
Outline · 8 parts
✓Criteria card✓Anatomy in 3D✓Steps1Depth-orient occlusal grooves2Reduce occlusal table following anatomy3Add functional cusp bevel4Axially reduce walls5Open proximal surfaces with guarded bur6Finish continuous chamfer and verify clearance with putty index✓Within vs outside✓Check✓Guided cut7Cut and score8Recall: day 3 and day 10Practice feedback against the 2026–27 published crown-prep criteria (molar). Not an exam or admissions result; your program and examiners decide.