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Preliminary evaluation of a novel polymer nanocomposite as a root‐end filling material
Author(s) -
Chogle S. M. A.,
Duhaime C. F.,
Mickel A. K.,
Shaikh S.,
Reese R.,
Bogle J. H.,
Chan D. K.,
Potluri S.,
Qutubuddin S.
Publication year - 2011
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.1365-2591.2011.01921.x
Subject(s) - materials science , apex (geometry) , nanocomposite , polymer , enterococcus faecalis , dentistry , composite material , medicine , chemistry , anatomy , biochemistry , escherichia coli , gene
Chogle SMA, Duhaime CF, Mickel AK, Shaikh S, Reese R, Bogle JH, Chan DK, Potluri S, Qutubuddin S. Preliminary evaluation of a novel polymer nanocomposite as a root‐end filling material. International Endodontic Journal , 44 , 1055–1060, 2011. Abstract Aim To evaluate two nanoparticle‐enhanced polymer root‐end filling materials (NERP1 and NERP2) on the initial apical seal as compared to a polymer‐based commercial compomer. Methodology One hundred and forty extracted roots with completely formed apices were resected 3 mm from the apex. Cavities were then prepared in the apical openings of the resected root ends using an ultrasonic handpiece to a depth of 3 mm. The roots were then randomly divided into five groups to receive one of five root‐end filling materials. Roots in groups 1 and 2 received NERP1 and NERP2, whilst those in groups 3 and 4 received identical polymers as groups 1 and 2 but without nanoparticle addition (RP1 and RP2, respectively). The root‐end cavities for the fifth group were filled with commercially available root‐end filling compomer. Roots were mounted in a dual‐chamber leakage apparatus and inoculated coronally with Enterococcus faecalis. Turbidity of the apical broth was assessed daily for 4 weeks as a sign of initial leakage. The results were statistically analysed using odds ratio and Fisher’s chi‐square analysis. Results Nanoparticle‐enhanced root‐end filling polymer 1 displayed significantly fewer leaked samples compared to all other tested groups as early as 5 days, whilst NERP2 was not significantly different compared to other groups. Odds ratio analysis revealed leakage of the commercial compomer was 12 times more likely than NERP1. Conclusion Nanoparticle‐enhanced root‐end filling polymer 1 can reduce apical microleakage significantly under laboratory conditions.