obturar

Obturar is a verb used in Portuguese and in some contexts in Spanish and other Romance languages, meaning to seal, block, or fill a cavity, hole, or passage. The action can be performed to prevent leakage, contamination, or the entry of substances, and it may involve closure with material, a device, or a method. The term derives from Latin obturare, meaning to close off or obstruct.

In dentistry, obturation refers to the final phase of endodontic treatment, in which the cleaned and shaped root canal is filled and sealed to prevent reinfection. The filling material is most commonly gutta-percha combined with an adhesive sealer. The goal is to entomb residual canal contents and create a hermetic seal within the root to maintain tooth integrity over time. Techniques vary and include cold lateral compaction, warm vertical compaction, and newer carrier-based systems, chosen according to case requirements and clinician preference. Radiographic verification is typically used to confirm adequate fill and absence of voids.

In broader medical and dental contexts, obturar can describe sealing or occluding a passage or cavity, such as sealing a fistula or filling a defect to restore function. The term is used both in clinical descriptions and in pharmacological or surgical notes to indicate that a space has been closed or blocked.

In summary, obturar denotes the act of sealing or filling to prevent leakage or infection, with its most common contemporary usage in the field of endodontics.