Setting Up A Symmetrical Smile: The Anterior Midline Critical Zone

We are often taught that smile design starts with the upper central incisors. To achieve an esthetically pleasing result, it is imperative that the maxillary central incisors be mirror images of each other. If they are not, the smile can look “off” or unesthetic. In fact, the closer we get to the physical midline of the smile, the more vital it is that bilateral symmetry be present. Differences in the central incisors will be more readily noticeable than discrepancies in the lateral incisors, for example...
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