How to use this odontogram
An odontogram is a chart of the teeth on which a dentist records what each tooth has: decay, fillings, crowns, missing teeth and other findings. This one works in your browser and gives you a clean PDF when you are done.
What you can chart
Select a button in the palette, then click the chart. Each button places its mark in one of five ways:
- On a surface: caries and restorations go on a square of the tooth's surface diagram.
- On a tooth: most conditions, such as a crown, a fracture or a missing tooth, go on the tooth itself.
- Between two teeth: a diastema or a supernumerary tooth goes in the gap between the two teeth.
- Across a range: a fixed orthodontic appliance or a fixed partial denture needs the first and the last tooth; a transposition needs the two adjacent teeth that have changed places.
- On several teeth: dentures, edentulism, removable orthodontics and fusion are marked on each tooth involved.
Reading the chart
The chart uses the symbols of the MINSA odontogram standard (NTS 045-2006).
Treatments and conditions
Palette buttons are shaded by type. Light green buttons are treatments: work a clinician has already placed or performed and that is present at the examination, such as a restoration, a crown, a denture, an orthodontic appliance, an implant, pulp therapy or a post and core. Planned treatment is not charted. Light beige buttons are conditions: clinical findings the dentist observes, such as caries, a fracture, a missing or rotated tooth, or an anomaly of tooth number, size or shape. The chart records findings, not symptoms: a symptom is something the patient reports, such as pain, and some findings, such as an erupting tooth, are normal.
Red and blue symbols
The dot on each button shows the colour its symbol is drawn in on the chart. Red marks caries, a fracture, a root remnant or a temporary treatment (a temporary crown). Blue marks a treatment in good condition and every other finding: a missing tooth or a toothless arch, a diastema, and findings about the number, size, shape, colour, wear, position or eruption of teeth. The MINSA standard also draws a treatment in poor condition in red; this chart, like the original tool, has only the good-condition form.
Tooth numbers (FDI notation)
Each tooth has two digits: the first is the quadrant and the second the tooth, counted from the midline. The chart is drawn as if you are facing the patient, so the patient's right side is on your left.
- 1 and 2: upper right and upper left permanent teeth (11–18, 21–28).
- 3 and 4: lower left and lower right permanent teeth (31–38, 41–48).
- 5 to 8: the same four quadrants for primary teeth (51–55 to 81–85), shown on the Child chart.
Good to know
Private by design
Nothing you enter is uploaded or stored. The chart and the patient details live only in this browser tab, so download the PDF before you close it.
Abbreviations and corrections
Click the box above or below a tooth to type an abbreviation of up to three letters. Click a mark again, or right-click it, to remove it; Ctrl+Z undoes the last change.