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The correlation between fluid transport and push‐out strength in root canals filled with a methacrylate‐based filling material
Author(s) -
Moinzadeh A.T.,
Mirmohammadi H.,
Hensbergen I. A. M.,
Wesselink P. R.,
Shemesh H.
Publication year - 2015
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/iej.12300
Subject(s) - dislocation , coronal plane , materials science , significant difference , dentistry , composite material , mathematics , anatomy , medicine , statistics
Aim To investigate the correlation between fluid transport and dislocation resistance in canals filled with a methacrylate‐based filling material. Methodology The root canals in sixty‐five single‐rooted human teeth were prepared to size 40, 0.06 taper. Sixty roots were filled with a single‐cone technique using RealSeal SE sealer and divided into 3 groups, whilst five roots served as fluid transport positive control. Group 1 ( n = 20): correlation group. Specimens were consecutively tested with fluid transport for 90 min and thereafter with the push‐out test at coronal and apical root levels. Group 2 ( n = 20): push‐out control. Specimens were only subjected to the push‐out test at coronal and apical root levels. Group 3 ( n = 20): fluid transport negative control. Specimens were totally covered with nail varnish. The correlation between fluid transport and dislocation resistance was assessed by Kendall's tau‐b coefficient. The Mann–Whitney U‐test was used to compare dislocation resistance between groups 1 and 2 and fluid transport between groups 1 and 3. Significance level was set at P < 0.05. Results Kendall's tau‐b correlation coefficients between fluid transport and dislocation resistance were weak, being coronally 0.139 ( P = 0.444) and apically −0.080 ( P = 0.658). No significant difference in dislocation resistance could be detected between groups 1 and 2 at both root levels ( P = 0.052 and P = 0.336, respectively). Conclusion No significant correlation could be identified between fluid transport and dislocation resistance, meaning that the corono‐apical sealing ability of a methacrylate‐based root canal filling is independent of its adhesive properties as indicated by its dislocation resistance.