Endodontia, also known as root canal therapy, is a branch of dentistry that deals with the diagnosis, prevention, and treatment of conditions related to the inside of the tooth. There are several synonyms for endodontia, including pulp therapy, root canal treatment, and endodontic therapy. Pulp therapy involves the removal of infected or damaged tissue inside the tooth, while root canal treatment involves the removal of the entire dental pulp. Endodontic therapy is a broader term that encompasses all procedures related to the inside of the tooth. Regardless of the synonym used, endodontia is an essential procedure that can save a patient's natural tooth, prevent further damage, and restore oral health and function.