DE DIVINA PROPORTIONE DENTIS
The Vitruvian Tooth · Crown-to-Root Atlas
Dr. Fareed Tareen, DDS
PLATE 11
Maxillary Central Incisor
CORONA 10.5 MM · RADIX 13.0 MM
CROWN : ROOT  1 : 1.24
CROWN FRACTION 0.45

References & Sources

Tooth outline anatomy & canal morphology
Hargreaves KM, Berman LH, eds. Cohen's Pathways of the Pulp. 12th ed. St. Louis, MO: Elsevier; 2021.
Average crown & root lengths · crown-to-root ratios
Nelson SJ. Wheeler's Dental Anatomy, Physiology, and Occlusion. 11th ed. St. Louis, MO: Elsevier; 2020.
Proportional construction
After Leonardo da Vinci, Vitruvian Man (c. 1490) — figure inscribed in circle & square.
CORONA CEJ RADIX APEX
Maxillary
Mandibular
Click a tooth · FDI notation — drag the gold CEJ dot to set the cervical line