Some esthetic factors in a smile.

Area of Science:

• Dentistry
• Facial Aesthetics
• Dental Anatomy

Background:

• Understanding smile characteristics is crucial for dental aesthetics.
• Previous research has not comprehensively defined the average open smile.
• Dental restorations aim to mimic natural tooth appearance and function.

Purpose of the Study:

• To survey and define the key characteristics of an average open smile.
• To provide data that can guide dental professionals in esthetic treatments.
• To establish a baseline for smile analysis in clinical practice.

Main Methods:

• A survey was conducted using 454 full-face photographs.
• Photographs were of randomly selected dental and dental hygiene students.
• Objective measurements and observations of smile features were recorded.

Main Results:

• The average smile displays the full length of maxillary anterior teeth.
• The incisal curve of maxillary teeth is parallel to the lower lip's curvature.
• The incisal curve slightly touches or misses the lower lip, showing six upper anterior teeth and premolars.

Conclusions:

• The defined characteristics of an open smile serve as a valuable reference.
• Knowledge of these features can enhance the esthetics of dental restorations.
• This study contributes to the understanding of smile composition in dentistry.