The art and science of smile design: Integrating tooth display, smile lines and proportion

This webinar explores the principles of smile design by integrating tooth arrangement, facial analysis, tooth and gingival display, and smile line evaluation. Participants will learn to apply the golden proportion and use the Chu Proportion Gauge to create predictable, esthetic restorative outcomes.

An attractive smile is created through the harmonious integration of teeth, gingival architecture, and facial characteristics. This webinar explores the fundamental principles of smile design and demonstrates how proper tooth arrangement contributes to facial balance and esthetic success. Participants will learn how to analyze tooth display in relation to the lips and face, evaluate the influence of soft tissue display and smile line position, and apply objective guidelines to create predictable esthetic outcomes.

The presentation will review the principles of ideal tooth proportion and contour, including the concept of the golden proportion as a guide for establishing pleasing relationships among the anterior teeth. Special emphasis will be placed on assessing the amount of maxillary tooth display at rest and during smiling, recognizing variations in smile line height, and understanding how these factors influence treatment planning.

In addition, participants will be introduced to the Chu Proportion Gauge as a practical clinical instrument for evaluating and idealizing tooth dimensions. Through clinical examples and case presentations, attendees will gain an understanding of how to translate esthetic principles into everyday practice to improve diagnosis, communication, and treatment outcomes.

Learning objectives

Upon completion of this webinar, participants will be able to:

• Analyze the relationship between tooth arrangement, facial characteristics, and overall smile esthetics.
• Evaluate maxillary tooth display at rest and during smiling to guide esthetic treatment planning.
• Assess soft tissue display and classify smile line variations that influence restorative and interdisciplinary decision-making.
• Describe the principles of ideal anterior tooth proportion, including the application and limitations of the golden proportion in smile design.
• Identify the esthetic characteristics that contribute to harmonious tooth size, shape, and contour.
• Utilize the Chu Proportion Gauge to objectively assess tooth dimensions and aid in the selection of ideal tooth proportions.
• Apply smile design principles and proportion analysis to achieve predictable, natural-looking esthetic outcomes in clinical practice.