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Ultrasonic root‐end preparation Part 2, Microleakage of EBA root‐end fillings
Author(s) -
SAUNDERS W. P.,
SAUNDERS E. M.,
GUTMANN J. L.
Publication year - 1994
Publication title -
international endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.988
H-Index - 119
eISSN - 1365-2591
pISSN - 0143-2885
DOI - 10.1111/j.1365-2591.1994.tb00277.x
Subject(s) - india ink , dentistry , materials science , apicoectomy , root canal , citric acid , penetration (warfare) , anterior teeth , chemistry , medicine , mathematics , anatomy , organic chemistry , operations research
Summary The effect of three methods of root‐end preparation, following apical resection, on the apical seal of root‐end fillings, was studied in vitro . Root canals of 116 single‐rooted teeth with mature apices were prepared chemo‐mechanically and obturated with gutta‐percha and sealer. The root ends were resected with a diamond bur under water coolant and were prepared as follows: group I a size 010 round bur was used to prepare an apical cavity 2–3 mm down the long axis of the root; group II treatment as per group 1 followed by a 60‐s rinse with a solution of 10:3 (10% citric acid: 3% Fe 2 Cl 3 ); and group HI an ultrasonic retrotip was used to prepare a 2–3 mm deep apical cavity. The root end was restored with an EBA cement. Apical leakage was determined using India ink after 7 days and 7 months. The teeth were demineralized, rendered transparent and linear dye penetration was recorded. Results showed that there was no significant difference in leakage between the groups at each time interval ( P >0.05) but there was increased leakage after 7 months ( P <0.01). Cracking of the root surface was seen most often with the ultrasonically prepared roots ( P <0.001).