Everyone wants to have healthy and beautiful teeth to make their smile more confident and attractive. In response, many people compare their teeth to their “second face” and make themselves look good through cosmetic dentistry. There are many patients who ask for cosmetic dentistry in the clinic every day. However, many of them have inappropriate understanding of cosmetic dentistry, thus receiving the wrong treatment, or improper use and maintenance of the teeth after cosmetic treatment, leaving irreparable regrets. Porcelain teeth in the minds of many patients is the all-purpose dental beauty method. In fact, porcelain teeth is only one of the treatments given to cosmetic dentistry, in some cases is not the best choice. For example, orthodontics should be the treatment of choice for patients with misaligned teeth. This means that the teeth can be changed by moving them. If there is a defect in the color, shape of the teeth, full crowns, or veneers can also be used to obtain aesthetic results. Some patients believe that it is incorrect to remove the bad teeth before placing dentures. Extraction is not considered unless the affected tooth has no therapeutic value, such as an overly loose tooth or wisdom tooth. As long as the roots of the teeth are available, we try to preserve the natural teeth. The whiter the teeth, the better. “My teeth don’t look white enough, make them whiter for me”. As we know, the outer layer of teeth is enamel, which is translucent, and the inner layer of dentin is yellowish, which gives the teeth a certain light yellow color, so the whiter the teeth are, the better. A tooth color that harmonizes with your personality is the best choice. Not all teeth that are within the normal color range need to be white. Those that are too dark for aesthetic reasons will need to be improved with certain treatments. Once and for all thinking, “Doctor, if I get my teeth done, I won’t have any problems for the rest of my life, right?” There are many patients who think this way, but once and for all things are often unattainable. First, after the cosmetic dentistry also need to pay attention to careful maintenance, such as pay attention to oral hygiene, avoid using porcelain teeth to be too hard food, etc., but also regular review; second, cosmetic dentistry materials have a certain service life, each person’s dental situation is constantly changing. Just as the car to a certain age should be scrapped. Beauty is important, but health should be the first priority, want to achieve the dual purpose of health, beauty, to enter as carefully as possible to consult, carefully consider. Listen to the professional doctor’s advice and make a choice to ensure the best, healthy cosmetic results.