Aesthetic Value of the Relationship between the Shapes of the Face and Permanent Upper Central Incisor

Table 1

Criteria for classification of face and central incisor shapes by angles Fa (face) and Ta (incisor) and distribution of face and central incisor shapes according to the examiners’ classification.

	Triangular	Medium	Oval	Medium	Square	Medium
Criteria
Face (Fa)	<78.01°	76.17±1.86	≥78.02°, ≤81.53°	79.72±1.06	81.54°>	83.42±1.37
Incisor (Ta)	<78.80°	75.29±2.76	≥78.81°, ≤83.64°	81.65±1.44	83.64°>	86.28±2.02
Classification of face
Examiner 1	24%		16%		60%
Examiner 2	26%		41%		33%
Examiner 3	37%		30%		33%
Classification of central incisor
Examiner 1	35%		15%		50%
Examiner 2	25%		24%		51%
Examiner 3	19%		10%		71%