Related Experiment Video
Updated: Feb 13, 2026

Ultrasonic Fatigue Testing in the Tension-Compression Mode
Published on: March 7, 2018
Nonsurgical retrieval of bioceramic materials using ultrasonics: a case report
M Roma1, Mranali K Shetty2, Vijayendranath Nayak3
1Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences Mangalore, Manipal Academy of Higher Education, Karnataka, Manipal, 576104, India.
Background:
Endodontic retreatment requires removal of previous root canal filling materials, followed by biomechanical preparation and re-obturation. Bioceramic sealers pose a challenge owing to their strong adhesion to dentin and mineral deposition. While complete removal is difficult, adjunctive techniques such as ultrasonics may enhance retrieval.
Case Presentation:
A 22-year-old South Asian male presented with persistent symptoms after root canal therapy. Clinical and radiographic evaluation suggested failure associated with bioceramic sealer obturation. Retreatment was undertaken using rotary retreatment instruments, supplemented with ultrasonic activation and copious sodium hypochlorite irrigation. This approach facilitated substantial removal of the bioceramic material, allowing thorough cleaning and reshaping of the canal system prior to obturation.
Conclusion:
Although complete elimination of bioceramic sealers is challenging, their retrieval is achievable with the aid of ultrasonics and irrigants. This case demonstrates a successful endodontic retreatment strategy, emphasizing the clinical relevance of adjunctive techniques in managing previously obturated bioceramic materials.
Related Concept Videos
Retrieval
Recall involves accessing information without cues, such as during an essay test, where individuals must retrieve facts and concepts from memory unaided. Another example is remembering the name of a colleague...
ER Retrieval Pathway
The ER uses many checkpoints to prevent the entry of incorrectly folded or a resident protein as cargo onto a transport vesicle. These mechanisms...
Data Reporting and Recording
Types of Reports I: Hands-off Report
Following are the key components and categories of hand-off reports:
Purpose and Process:
Genetic Material
Members Made of Elastoplastic Material
As the bending moment...

