Anterior and overall tooth-size discrepancy calculator. Enter either summed mesiodistal widths or individual tooth measurements. Unit: millimetres.
Anterior custom standard
Overall custom standard
Patient / case information for report
Arch sums
Anterior 3-3
Overall 6-6
Individual tooth measurements
For anterior analysis, fill the six anterior teeth. For overall 6-6 analysis, fill all teeth from first molar to first molar.
Maxillary teeth 16 to 26
Mandibular teeth 36 to 46
PDF export uses the browser print engine. Select “Save as PDF” in the print dialog if your browser asks for a destination.
Results
Clinical disclaimer
This calculator is intended as a clinical support and educational tool only. The Bolton ratios and millimetric discrepancies must be interpreted by a qualified dental or orthodontic professional together with complete diagnostic records, including occlusion, arch form, tooth morphology, restorations, periodontal status, skeletal pattern, treatment objectives and patient-specific factors. This tool does not provide a diagnosis, treatment plan, or indication for enamel reduction, extraction, prosthetic build-up, or restorative treatment.
Formulas used
Anterior Bolton ratio = mandibular anterior sum / maxillary anterior sum × 100
Overall Bolton ratio = mandibular 6-6 sum / maxillary 6-6 sum × 100
Ideal mandibular sum = maxillary sum × ideal ratio / 100
Ideal maxillary sum = mandibular sum / (ideal ratio / 100)
Mandibular adjustment = ideal mandibular sum - measured mandibular sum
Maxillary adjustment = ideal maxillary sum - measured maxillary sum