Which method is NOT a technique for root canal filling?

Filling a root canal is crucial for the successful treatment of infected or damaged teeth, and various techniques are specifically designed for this purpose. The method of direct filling with composite is primarily used for restoring cavities in the crown portion of the tooth and is not appropriate for filling the root canal space. Root canal treatments require materials and methods that can effectively seal the canal to prevent reinfection and promote healing.

On the other hand, obturating with gutta percha, laterally condensed technique, and thermoplastic technique are all established methods specifically utilized for root canal filling. Gutta percha is a biocompatible material that is commonly used to fill the cleaned and shaped root canal space after treatment. The laterally condensed technique involves placing gutta percha in a controlled manner to ensure complete sealing. The thermoplastic technique uses heat to soften gutta percha for better flow and adaptation within the canal. These methods are designed to optimize the outcome of endodontic therapy, making them suitable and effective for this particular dental procedure.