Skip to content
Osler PressEdu
Log inStart free
›M3: Class II amalgam (school bench tests)English한국어Exit lesson
M3 · 6 steps

M3: Class II amalgam (school bench tests)

A Class II amalgam prep on #30 MO with the neighbor, #29, protected, for school bench tests that still list amalgam. The 2026–27 licensure exam tests posterior composite only; M4 is that path. Six steps go from the occlusal outline to the proximal box, breaking contact behind a guard, and checking caries clearance, contact and occlusion.

Unlock the full library

M3 has 6 steps, a 3D view and checks. They open with the $99 season (90 days), the $149/yr student seat, or a class code that assigns this lesson. M0 and M1 are free.

Unlock the full library Open free M1
Sources: web.archive.org · web.archive.org
English한국어
✕M3: Class II amalgam (school bench tests)
M3: Class II amalgam (school bench tests)

A Class II amalgam prep on #30 MO with the neighbor, #29, protected, for school bench tests that still list amalgam. The 2026–27 licensure exam tests posterior composite only; M4 is that path. Six steps go from the occlusal outline to the proximal box, breaking contact behind a guard, and checking caries clearance, contact and occlusion.

Outline · 6 steps
1. Mark occlusal outline and caries approach
2. Establish occlusal entry
3. Extend proximal box with guarded/slotted bur
4. Protect adjacent tooth with matrix/guard while breaking contact
5. Refine cavosurface and internal form
6. Verify caries clearance, matrix contact and occlusion

Unlock the full library

M3 has 6 steps, a 3D view and checks. They open with the $99 season (90 days), the $149/yr student seat, or a class code that assigns this lesson. M0 and M1 are free.

Unlock the full library Open free M1
Sources: web.archive.org · web.archive.org

Practice feedback against the 2026–27 published crown-prep criteria (molar). Not an exam or admissions result; your program and examiners decide.