EXOSTAN

Third molar extraction difficulty and IAN risk from a panoramic radiograph. AI proposes, the dentist verifies, the report goes out.

v0.3 · research use

1/12 M1 cusp tip

AI proposed, not yet checkedPlaced or confirmed by dentistSelected

Upload an OPG and Exostan detects the third molar and all 12 landmarks automatically. Your role is to check and approve. To correct a point, drag it (a magnifier appears while dragging). Click a landmark name below to select it, then use the arrow keys to nudge it, or click the image to move it there. Drop a JPG or PNG export onto the viewer; export DICOM to PNG first.

Case details

Dentist name Clinic Patient name Patient file no. Date Tooth

Patient name and file number appear only on the reports. The case library keeps de-identified findings.

Exostan result · tooth 38

Extraction difficulty

–%

Awaiting landmarks

IAN contact likelihood

–%

Awaiting landmarks

Upload an OPG and press AI detect landmarks, or place the 12 points yourself.

Classification

Factor	Finding	Measure	Pts
Pederson index (3 to 10) + modifiers			–

Dentist review

Angulation M2 contact Root morphology M3 crown width (mm, for scale)

Rood and Shehab signs on this OPG (see Knowledge base for how to read each one):

Clinical observations

Actions taken:

Other actions

Dentist's final call

I have reviewed the landmarks, signs and findings on this radiograph and confirm this assessment.

Reports

No assessment yet.

How Exostan learns

Every saved case is stored without patient identity. When you record the surgical outcome (actual difficulty, CBCT result, nerve outcome), Exostan compares it with its prediction. Once there are 5 outcomes it adds a similar-case estimate to the difficulty score. Once there are 20 CBCT-verified cases it refits the IAN weights on your own data. Rules and literature weights stay in charge until the data is large enough.

Cases

Case	Date	Tooth	Winter	Depth / ramus	Diff	IAN	Dentist call	Outcome
No saved cases yet. Assess an OPG, verify it, then press Save to case library.

Decision support prototype. Angulation, depth and ramus relation are measured from verified landmarks and scored with the Pederson index. IAN likelihood combines root to canal distance with Rood and Shehab signs weighted by published likelihood ratios. A panoramic radiograph cannot rule out nerve contact; CBCT is the reference standard. The treating dentist remains responsible for every clinical decision.

How Exostan learns

Cases Copy as CSV

Cases