Yes, the root canal may cause your eye twitching because of the infection of the eyes from the teeth problems. As we know, the nerves in the whole body are interlinked, especially among the teeth, nose and eye nerves. The so-called root canal may need the therapy which is the pulp for infection after pulling. It is a special oral device which will help you remove pulp inflammatory substances in the tube cavity clean. After flushing diminishes inflammation sterilization, it can fill the lumen with packing material because of the lumen of a large number of bacteria and toxins. The dental pulp tissue has the decomposition material. It needs to be repeated several times which can totally destroy infected root. The canal treatment technique is an intricate process which needs to remove the pulp, completely sterile filling. At last, it can complete dental treatment. You should treat it as soon as possible.
"Root canal" is the term used to describe the natural cavity within the center of the tooth. The pulp or pulp chamber is the soft area within the root canal. A tooth's nerve and pulp can become irritated, inflamed, and infected due to deep decay. Eye twitching is a repetitive, uncontrollable blinking or spasm of the eyelid, usually the upper lid. Actually, a root canal does not often cause eye twitching unless the muscles around eyes are affected by a root canal, however, it is rarely. Eye twitching are topically caused by fatigue, stress and caffeine. In these cases, you need to stay fit and have a rest.
Well, from what you said, I can see that there is something wrong with both your eyes and teeth. Generally speaking, our eyes and teeth are interconnected through our nervous system, one part get sick, the other follows. Thus, it would be quite possible for you to get twitching eyes if your root canal problem gets serious. Just try to get some medication and treatment. Also, get adequate rest and healthy food. Good luck!