Effect of obturation techniques on fracture resistance of endodontically treated teeth

The success of endodontic treatment depends on the obturation method that influences the structural strength of treated teeth. Therefore, it is of interest to evaluate the fracture resistance of 60 single-rooted premolars using Cold Lateral Compaction, Warm Vertical Compaction, or the Single Cone Technique with Bioceramic Sealer, followed by compressive testing after four weeks in artificial saliva. The Single Cone Technique with Bioceramic Sealer showed the highest fracture resistance (600±55 N) followed by Warm Vertical Compaction (520±45 N), while Cold Lateral Compaction had the lowest resistance (450±50 N) (p<0.05). This shows that the Single Cone Technique with Bioceramic Sealer provides superior reinforcement, whereas Cold Lateral Compaction is least effective. Thus, clinicians should consider obturation techniques based on their impact on tooth strength to improve long-term treatment outcomes.