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M0 step 1 of 6 · No bur
Find tooth #30 and tooth #3
Count from tooth 1, the maxillary right third molar: #3 is the maxillary right first molar. On the lower arch #30 is the mandibular right first molar, with #29 in front and #31 behind.
Your last prep
No prep scored yet. Your first score is free with an account.
Score a prep free- Target
- Adjacent tooth: No damage to the adjacent tooth
- Why
- Every module names its tooth by number, and the adjacent-tooth checkpoint names the neighbors the same way.
- Watch
- Patient right is your left when you face the typodont.
After the lesson: Retake the photos and score again on the 5 checkpoints.
Check 1 of 1 · Adjacent tooth
Tooth #30 is which tooth?
Sources and 3D credits
Sources: Universal Numbering System (permanent teeth 1 to 32), permanent dentition table (checked 2026-11-11) · Clinical candidate manual 2026–27, p. 13 (teeth), p. 14 (scoring overview), p. 16 (taper, line of draw) (checked 2026-10-28)
3D model: molar30.glb: teeth #29–#31, jaw bone and gum. BodyParts3D, © 2008 Life Science Integrated Database Center (DBCLS); modified by Osler Press. CC BY-SA 2.1 JP · source
3D viewer code. three.js authors. MIT · source
3D viewer code. three.js authors. MIT · source
Step 1: Find tooth #30 and tooth #3
No prep scored yet · target No damage to the adjacent tooth
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TOOLNo bur
CHECKPOINTAdjacent tooth: No damage to the adjacent tooth
WHYEvery module names its tooth by number, and the adjacent-tooth checkpoint names the neighbors the same way.
Do
Count from tooth 1, the maxillary right third molar: #3 is the maxillary right first molar. On the lower arch #30 is the mandibular right first molar, with #29 in front and #31 behind.
WatchPatient right is your left when you face the typodont.
Check 1 of 1 · Adjacent tooth
Tooth #30 is which tooth?
Sources: Universal Numbering System (permanent teeth 1 to 32), permanent dentition table (checked 2026-11-11) · Clinical candidate manual 2026–27, p. 13 (teeth), p. 14 (scoring overview), p. 16 (taper, line of draw) (checked 2026-10-28)
3D model: molar30.glb: teeth #29–#31, jaw bone and gum. BodyParts3D, © 2008 Life Science Integrated Database Center (DBCLS); modified by Osler Press. CC BY-SA 2.1 JP · source
3D viewer code. three.js authors. MIT · source
3D viewer code. three.js authors. MIT · source
Outline · 8 parts
✓Criteria card✓Anatomy in 3D3Steps1Find tooth #30 and tooth #32Name the five surfaces of #303Peel enamel, dentin and pulp4Read the five checkpoints on a finished prep5Photograph the prep on the grid card6Read your score band by band4Within vs outside5Check6Guided 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.