A big hole in the tooth is recommended to fill or do braces, according to the condition of the pulp and the size of the cavity to judge, can be directly filled or root canal treatment after doing braces. 1. A big hole in the tooth indicates that the tooth is decayed, if the cavity is large and deep, it is necessary to consider doing root canal treatment according to the condition of the pulp, after root canal treatment, it is recommended to fill the tooth and then do the crown treatment, to avoid cracking of the tooth when biting hard objects. 2. If the cavity does not need root canal treatment, you can first consider resin filling, and if the filling often falls off after filling, it is recommended to make a crown. Tooth broken a big hole is filled or crown treatment, need to go to the hospital to check the depth and size of the hole, and then according to the specific circumstances of the program selection.