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Pitt bench test coming up? See the 5 crown checkpoints

See what to fix on your crown prep before the bench test

Photograph your typodont prep, get scored on 5 checkpoints, fix the one it says to fix next.

A full-crown prep on a lower molar between its neighbours, on black.
Reference molar model, not your typodont and not a score.
Occlusal reduction
1.0–2.0 mm
Checkpoint 1 · Even over the whole surface
Axial taper
≤ 12° per wall
Checkpoint 2 · Each wall from the line of draw
Margin and line angles
0.5–1.5 mm
Checkpoint 3 · Smooth, continuous, rounded
Adjacent tooth
No contact
Checkpoint 4 · No contact or damage
Putty clearance
≥ 1.0 mm
Checkpoint 5 · Room read on the putty index

Your prep, scored, with the step to fix it.

Each miss names the lesson step that covers it, so the number and the lesson point at the same mistake.

The prepared molar on the reference model.

1Your prepPhotograph it on your typodont: occlusal, buccal, lingual.

Occlusal reduction
1.0–2.0 mm
Axial taper
≤ 12° per wall
Margin and line angles
0.5–1.5 mm
Adjacent tooth
No contact
Putty clearance
≥ 1.0 mm

2Scored on 5 checkpointsWithin or outside each range, in numbers.

The crown seated on the same molar.

3The crown it has to seatFix the checkpoint the score names in a 3D lesson, then score again.

Reference molar model, not your typodont and not a score.

The full gold crown on #30, step by step.

Six steps from depth grooves to the putty index, each with the diamond to use and the target it has to meet. Start with the checkpoint your score names.

Open the free lesson

The M1 lesson on its criteria card: the 5 checkpoints with their bands, the steps listed on the left.

Find your school.

Each school’s bench test page lists only the procedures that school published, with its source and the date we read it.

$99 for 90 days. One payment.

No auto-renew, 14-day refund. Your first score is free with an account. Student seat $149 a year.

  • $599Online reviewsource
  • $1,000–6,295In-person coursessource

Running a class? Faculty use it free and see which checkpoint each student misses most. Create a class code

Questions about scoring, price and classes

What do I photograph?

Three photos of the prep on your school typodont: occlusal, buccal and lingual, at the same distance and light, plus the sectioned putty index for clearance.

Does it score against my school’s bench test?

It scores your crown prep on 5 checkpoints against the 2026–27 published crown-prep criteria for a molar, not your school’s own grading. Your school’s page shows the procedures, clock and teeth it published, with the source. 26 programs are listed.

What happens at my second scored prep?

Your first score is free with an account. The second asks for $99 for 90 days, one payment, no auto-renew, with a 14-day refund.

See pricing
Can my class use it?

Yes. Faculty use Osler Press free: create a class code, assign lessons, and see each checkpoint’s within-criteria rate across the class and which checkpoint each student misses most. Students join with the code; a $149 a year seat opens the full library.

Create a class code
Is this an exam result?

No. Practice feedback against the 2026–27 published crown-prep criteria (molar). Not an exam or admissions result; your program and examiners decide.