Smile design refers to the many scientific and artistic principles that considered collectively can create a beautiful smile. These principles are established through data collected from patients, diagnostic models, dental research, scientific measurements, and basic artistic concepts of beauty. The true meaning of facial aesthetics, in regards to dentistry, is to look at the growth and development as well as aging of the patient's facial form and relate that to how the dentition would improve it. The color, shape, and position of the teeth are all part of the equation. Recognizing that form follows function and that the anterior teeth serve a vital role in the oral health of the patient is paramount. Using a comprehensive approach to diagnosing and treatment planning of aesthetic cases can help achieve the smile that best enhances the overall facial appearance of the patient and provides the additional benefit of enhanced oral health.