ClearForward · Tooth Size Analysis
Bolton Ratio Calculator
Patient information
Optional
Diagnosis & clinical findings
Optional — included in report
Classification
Vertical & sagittal measurements
mm
mm
%
mm
mm
Space analysis
mm
mm
mm
mm
IPR safety limit
Maximum safe interproximal reduction per contact point is 0.5 mm. Exceeding this risks enamel damage, sensitivity, and caries susceptibility. Values approaching or exceeding this limit are flagged below.
Measurement progress
0 / 24 teeth
Anterior: 12 to go
Overall: 24 to go
Maxillary arch
Upper — first molar to first molar Complete
Anterior — mm
Overall — mm
Ant — mm
All — mm
Anterior (3–3)
Posterior (6–4)
Right ← → Left
Mandibular arch
Lower — first molar to first molar Complete
Anterior — mm
Overall — mm
Ant — mm
All — mm
Anterior (3–3)
Posterior (6–4)
Right ← → Left
Anterior segment · 3–3
Anterior Bolton ratio
—
%
Ideal 77.2% · normal range 75.55–78.85%
72.377.2 ideal82.2
Measured ratio against Bolton normal band (±3 SD)
Discrepancy
—
Excess arch
—
Overall dentition · 6–6
Overall Bolton ratio
—
%
Ideal 91.3% · normal range 89.39–93.21%
85.691.3 ideal97.0
Measured ratio against Bolton normal band (±3 SD)
Discrepancy
—
Excess arch
—
Correction requirements
IPR and restorative build-up needed to achieve ideal Bolton ratios. Red values exceed the 0.5 mm/tooth safety limit.
| Segment | Discrepancy | Excess arch | IPR / tooth (full) | IPR / tooth (incisors) | Build-up / tooth (full) | Build-up / tooth (incisors) |
|---|---|---|---|---|---|---|
| Anterior (3–3) | — | — | — | — | — | — |
| Overall (6–6) | — | — | — | — | — | — |
Anterior IPR / tooth (6 teeth)
—
0 mm0.5 mm limit1.0 mm
Overall IPR / tooth (12 teeth)
—
0 mm0.5 mm limit1.0 mm
Clinical interpretation
Enter mesiodistal tooth widths above to receive a complete Bolton analysis with clinical recommendations.