Resistance to leakage of various thicknesses of apical plugs of Bioaggregate using liquid filtration model.
OBJECTIVE
The aim of this study was to compare the resistance to leakage of different thicknesses of Bioaggregate (BA) and 4-mm-thick white mineral trioxide aggregate (WMTA) in an apexification model using liquid filtration.


METHODS
32 extracted mandibular premolar teeth were sectioned at the cemento-enamel junction and 3-4 mm from the tooth apex to obtain 12-mm-long root segments. The apical and coronal thirds were prepared with size two through six Gates Glidden burs. The teeth were divided into four groups according to material and thickness, as follows: Group 1: 2-mm BA; Group 2: 4-mm BA; Group 3: 12-mm (total length) BA; Group 4: 4-mm WMTA (control). The empty parts of the roots in Groups 1, 2, and 4 were filled with gutta-percha and root canal sealer, and leakage was measured using fluid filtration. The data were analyzed using the Kruskal-Wallis H-test.


RESULTS
No statistical differences in microleakage were observed between Groups 1, 2, and 4 (P > 0.05). Group 3 (roots filled completely with BA) showed significantly less leakage than the other groups tested (P < 0.01).


CONCLUSIONS
The findings of this study showed that 12 mm of BA exhibited the best resistance to leakage. At the same time, 2-4 mm of BA showed similar results when compared to 4-mm MTA. In light of these results, this study suggests that BA may be a good candidate for further clinical studies when used as an apical barrier for apexification.
Department of Pediatric Dentistry, Faculty of Dentistry, Ankara University, Ankara, Turkey.
Betül
B
Memiş Özgül
Tuğba
T
Bezgin
Cem
C
Şahin
Şaziye
Ş
Sarı
D017607:Aluminum Compounds / Q000494:pharmacology*; D056624:Apexification / Q000379:methods*; D001641:Bicuspid / Q000601:surgery*; D017610:Calcium Compounds / Q000494:pharmacology*; D002126:Calcium Hydroxide / Q000494:pharmacology*; D003763:Dental Leakage; D004338:Drug Combinations; D006801:Humans; D006882:Hydroxyapatites / Q000494:pharmacology*; D066298:In Vitro Techniques; D008334:Mandible; D010087:Oxides / Q000494:pharmacology*; D012387:Root Canal Filling Materials / Q000494:pharmacology*; D012389:Root Canal Obturation / Q000379:methods*; D017640:Silicates / Q000494:pharmacology*
D017607:Aluminum Compounds; C557009:BioAggregate; D017610:Calcium Compounds; D004338:Drug Combinations; D006882:Hydroxyapatites; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; D002126:Calcium Hydroxide
Bioaggregate; apexification; apical barrier; mineral trioxide aggregate