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- Title
EVALUATION OF APICAL MICROLEAKAGE OF NANO HYDROXYAPATITE SEALER WITH COLD LATERAL AND SYSTEM B TECHNIQUES: IN VITRO STUDY.
- Authors
M. A., Farea; S. M., Masudi; W. Z. W., Bakar
- Abstract
Introduction: The most common cause of failure involving endodontic therapy can be attributed to the lack of an apical seal leading to leakage at the apex. Objective: To evaluate in vitro the apical sealing ability of experimental nano-HA endodontic sealer with two different gutta-percha obturation techniques. Materials and Method: Forty four extracted single rooted human teeth were prepared using Pro Taper nickel titanium rotary system. The samples were randomly divided into four groups of ten each and obturated with either cold lateral or warm vertical condensation "System B" using AH26 or Nano-HA as sealer. Four teeth were used as positive and negative controls. The teeth were coated with nail varnish except apical 2 mm and immersed in methylene blue dye solution for 72 hours and then embedded in resin. Six transverse sections of the teeth were taken starting at the apical foramen and evaluated for dye penetration using stereomicroscope. Results: Statistical analysis of the results demonstrated significantly less leakage for the system B technique compared to cold lateral condensation (p < 0.05). There was no statistically significant difference between Nano-HA and AH26 sealers (p > 0.05). All groups displayed the greatest decrease in stained dentin when the apical distance was between 2.0 mm and 4.0 mm. The positive control demonstrated maximum dye Penetration and the negative control showed no dye penetration. Discussion and Conclusion: The results showed that experimental nano-hydroxyapatite sealer provided a similar apical seal to that obtained with AH26 and could be used as an alternative to the commercial available endodontic sealer. In addition, warm vertical condensation by system B created a better apical seal than conventional cold lateral condensation technique.
- Subjects
HYDROXYAPATITE coating; NANOSTRUCTURED materials; TOOTH roots; ROOT canal treatment; ENDODONTICS
- Publication
Malaysian Journal of Medical Sciences, 2008, p81
- ISSN
1394-195X
- Publication type
Article