Patient: Hello doctor: Four years ago, I had an accident and my four teeth (the middle two are incisors) were broken, so the doctor did root canal treatment for my four teeth, and the two leftmost and rightmost teeth had metal stakes and baked teeth. Now I would like to ask a few questions: 1. Is it wrong to have root canal treatment for four teeth at the beginning? 2. After a long time, will the root of the root canal be rotten inside the secondary tooth? 3.I am not satisfied with the shape and color of my current baking teeth, I feel fake at first glance. 4.In my daily life, should I take off my dentures regularly to clean the real teeth inside? Guangzhou Medical College First Affiliated Hospital Department of Stomatology Pan Guangshi: 1, according to your description, root canal treatment after trauma to the front teeth and then the restoration of porcelain teeth with piles is the correct approach. 2, such as porcelain teeth of poor production quality, or doctors do not have a good quality of tooth preparation, dentures and internal roots between the gap, there will be food embedding, resulting in the internal roots of the decay of the situation can be found in the daily several matters you can judge, such as gum edge congestion, redness, odor or looseness, etc.. 3, you feel unsatisfied with the shape and color of the teeth, may be related to several factors, such as the level and quality of dental production is not good, not personalized color matching, poor choice of materials, or bad doctor program development, tooth preparation, bonding and other processes. 4, these dentures are fixed dentures, have done a solid bonding can not be removed for cleaning, only regular oral examination can be. Patient: Thank you, Dr. Pan!