Root canal can be made without drilling. Root canal is to grind your teeth slightly after anesthesia, and then pull out the necrotic nerve. By collecting models, you can make a denture-like sheath and stick it on your teeth. First, you use disposable adhesive. If it doesn't loosen, you don't need to change the glue. If it is dropped, it can be replaced with permanent glue, and it can not be dropped with disposable glue.

Root canals are more expensive than ordinary fillings, so you can decide whether to use them or not.