Author/Authors :
Azimi Maryam نويسنده , Farhadian Maryam نويسنده Farhadian Maryam , Dinparvar Maryam نويسنده Department of Orthodontics, Faculty of Dentistry, Hamadan
University of Medical Sciences, Hamadan, IR Iran , Teimourian Hosna نويسنده Department of Operative and Esthetic Dentistry, Faculty of
Dentistry, Kermanshah University of Medical Sciences, Kermanshah, IR
Iran
Abstract :
Background: The width ratio of teeth is an important factor in
dental and facial esthetics. The Golden proportion (62%) and the
recurring esthetic dental proportion (RED) are two theories in this
field that have been suggested to create harmony among anterior teeth.
These have rarely been studied among the Iranian population. Objectives:
The aim of this study was to evaluate the Golden proportion and RED
proportion in students, staff, and patients of Shahed dental school.
Patients and Methods: This study was conducted with 116 subjects in
Shahed dental school photographs of the subject’s anterior teeth were
taken from the frontal view. The perceived width ratios of canine to
lateral incisor and lateral incisor to central incisor were calculated.
In this study, the Golden proportion was evaluated within the range of
0.55 – 0.64. To evaluate the existence of the RED proportion in each
subject, the width ratio of canine to lateral incisor was compared with
the width ratio of lateral incisor to central incisor. Results: The
Golden proportion existed in 25% of the perceived width ratios of
lateral incisor to central incisor, and 2.1% of the width ratios of
canine to lateral incisor in natural dentition. The RED proportion
existed in 18.5% of subjects, and the most recurring proportion was 0.73
in these subjects. Conclusions: The Golden proportion and the RED
proportion cannot be used as constant proportions to create a harmonious
proportion throughout the width of maxillary anterior teeth.
