The incisors are crooked clinically can be solved by two methods: First, the orthodontic correction method, through orthodontic correction can make the crooked incisors align to achieve beautiful results, but the orthodontic time is relatively long, it takes 1.5-2 years, and the cost of orthodontics is also more expensive. Second, the crown restoration method, the long crooked incisors need to be root canal treatment, after the core of the pile to change the position of the channel, and then restored with porcelain crowns or full porcelain crowns, to achieve the effect of neat and beautiful front incisors. The advantage of the crown restoration method is that it takes less time to achieve the cosmetic effect in a short period of time.