Significance of crown-down root canal preparation technique in endodontic therapy by using the hydroxylapatite sealer

AIM: To evaluate the crown-down preparation technique, and the use of hydroxylapatite based material for the definitive root canal obturation. METHODS: The investigation included 20 single-canal roots with chronic periapical inflammatory lesion. Biomechanical medicamentous canal preparation was done using the double-flared technique with balanced force, and the obturation was performed with hydroxylapatite sealer (unicone technique). Clinical and radiographic check-up performed 12 months after the treatment, used the following parameters: pain, swelling, percussion and palpation sensitivity, and the presence of fistula. RESULTS: The obtained results showed a successful treatment in 18 cases, while in the 2 cases the treatment failed. CONCLUSION: These findings suggested that the crown-down preparation technique efficiently cleaned and shaped the root canal, and that the hydroxylapatite-based material created the homogenous and hermetic root canal obturation, so this methodology could be recommended for the endodontic therapy.