From an aesthetic point of view, the relationship between the gums and the teeth is the closest, if there is no healthy and natural gums, it is difficult to achieve the most ideal aesthetic effect of the white, beautiful teeth. The following is an example of crown lengthening surgery to illustrate the importance of healthy gingiva to improve the aesthetic effect of teeth. 1, bilateral upper anterior teeth gingival morphology asymmetry, the right side of the upper anterior teeth clinical crown is too short, seriously affecting aesthetics, the patient asked to improve the teeth and gingival morphology. 2. Crown lengthening surgery was performed. After the crown lengthening surgery, the gingiva returned to its normal physiological form, which greatly improved the patient’s aesthetics. 4.After porcelain restoration of the upper right anterior tooth.