Ultrasonic preparation improves outcome in apical surgery.
METHODS
This was a randomised controlled trial (RCT).


METHODS
Root-end resection and preparation with a round dental bur was compared with the use of ultrasonic diamond coated retro-tips.


METHODS
Treatment was considered a success when the radiological and clinical criteria listed (Table 1) were met.


RESULTS
Out of a total group of 399 patients who were included in the study, adequate followup could be obtained in 290 patients. The overall success rate in the ultrasonic group was 80.5% and in the group treated with a bur was 70.9% (P 0.056). In molars, the difference in success rate was significant (P 0.02).


CONCLUSIONS
The use of an ultrasonic device in apical surgery showed a clear benefit over the traditional treatment. Especially in molars, the results were significant.
Naito
Toru
T
Department of General Dentistry, Fukuoka Dental College, Fukuoka, Japan.