HOSA Dental Terminology Test 2025 – 400 Free Practice Questions to Pass the Exam

The process of filling a root canal from the apex of the tooth to the pulp is referred to as retrofilling. In endodontic treatment, retrofilling specifically denotes the technique where material is placed in the root canal space to seal it effectively, addressing any potential pathways for infection or materials that were not adequately filled during the initial procedure. This process is critical for preventing reinfection and ensuring the long-term success of the root canal therapy.

Retrofilling is different from the other terms provided. Root preparation involves the shaping and cleaning of the canal system before it is filled, whereas endo restoration refers to the overall restoration of the tooth after endodontic treatment is completed, typically including a crown or filling of the corona part of the tooth. Pulp therapy usually pertains to treatments specifically concerning the pulp tissue, often referring to procedures done on immature teeth or reversible pulpitis, not to the filling process of the root canal itself.