Course
Seven units, in the order the geometry forces: the cranial base first, because every angle after it is measured against that line, and a whole case last. Each one is a card to read, 5 placements with the answer showing, the construction the unit earns, and a 10-placement checkpoint.
- 1The cranial baseTwo points, and the line that everything else is measured against.
- 2The maxillaThe upper jaw: where its front sits, and how far forward that is.
- 3The mandibleThe lower jaw, from the angle to the chin — and the number that names the class.
- 4Frankfort and the ramusThe horizontal the head is levelled by, and the two points behind the jaw.
- 5The dentitionFour incisor points, two molar edges, and what the teeth are doing about the skeleton.
- 6The profileSix points on skin, and the face the patient actually sees.
- 7Reading a caseAll twenty-six, in order, and the sentence they add up to.
Nothing else in Sella is locked. Find, Trace and the four quiz modes are open from the first visit; the Course is the guided way through the same twenty-six points, and the checkpoint is judged at Beginner tolerance whatever difficulty you play at elsewhere.