Push-out bond strength of MTA HP, a new high-plasticity calcium silicate-based cement.
This study was designed to investigate the resistance to dislodgment provided by MTA HP, a new high-plasticity calcium silicate-based cement. Biodentine and White MTA Angelus were used as reference materials for comparison. Three discs 1 ± 0.1 mm thick were obtained from the middle third of the roots of 5 maxillary canines. Three 0.8-mm-wide holes were drilled on the axial surface of each root disc. Standardized irrigation was performed. Then the holes were dried with paper points and filled with one of the three tested cements. The filled dental slices were immersed in a phosphate-buffered saline (PBS) solution (pH 7.2) for 7 days before the push-out assessment. The Kruskal-Wallis test was applied to assess the effect of each endodontic cement on the push-out bond strength. Mann-Whitney with Bonferroni correction was used to isolate the differences. The alpha-type error was set at 0.05. All specimens had measurable push-out values and no premature failure occurred. There were significant differences among the materials (p <0.05). The Biodentine specimens had the highest push-out bond strength values (p < 0.05). MTA HP had significantly higher bond strength than White MTA (p < 0.05). MTA HP showed better push-out bond strength than its predecessor, White MTA; however, Biodentine had higher dislodgment resistance than both MTA formulations.
Universidade do Grande Rio, Universidade do Grande Rio, School of Dentistry, Department of Endodontics, Rio de Janeiro RJ , Brazil, Universidade do Grande Rio - UNIGRANRIO, School of Dentistry, Department of Endodontics, Rio de Janeiro, RJ, Brazil.
Emmanuel Jnl
EJ
Silva
Universidade do Grande Rio, Universidade do Grande Rio, School of Dentistry, Department of Endodontics, Rio de Janeiro RJ , Brazil, Universidade do Grande Rio - UNIGRANRIO, School of Dentistry, Department of Endodontics, Rio de Janeiro, RJ, Brazil.
Nancy Kudsi
NK
Carvalho
Universidade do Grande Rio, Universidade do Grande Rio, School of Dentistry, Department of Endodontics, Rio de Janeiro RJ , Brazil, Universidade do Grande Rio - UNIGRANRIO, School of Dentistry, Department of Endodontics, Rio de Janeiro, RJ, Brazil.
Mayara
M
Zanon
Universidade do Grande Rio, Universidade do Grande Rio, School of Dentistry, Department of Endodontics, Rio de Janeiro RJ , Brazil, Universidade do Grande Rio - UNIGRANRIO, School of Dentistry, Department of Endodontics, Rio de Janeiro, RJ, Brazil.
Plínio Mendes
PM
Senna
Universidade do Grande Rio, Universidade do Grande Rio, School of Dentistry, Department of Endodontics, Rio de Janeiro RJ , Brazil, Universidade do Grande Rio - UNIGRANRIO, School of Dentistry, Department of Endodontics, Rio de Janeiro, RJ, Brazil.
Gustavo
G
DE-Deus
Universidade Estadual de Campinas, Universidade Estadual de Campinas, Piracicaba School of Dentistry, Department of Endodontics, Piracicaba SP , Brazil, Universidade Estadual de Campinas - UNICAMP, Piracicaba School of Dentistry, Department of Endodontics, Piracicaba, SP, Brazil.
Mário Luis
ML
Zuolo
Universidade Estadual de Campinas, Universidade Estadual de Campinas, Piracicaba School of Dentistry, Department of Endodontics, Piracicaba SP , Brazil, Universidade Estadual de Campinas - UNICAMP, Piracicaba School of Dentistry, Department of Endodontics, Piracicaba, SP, Brazil.
Alexandre Augusto
AA
Zaia
D017607:Aluminum Compounds / Q000737:chemistry*; D001729:Bismuth / Q000737:chemistry; D017610:Calcium Compounds / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods*; D003738:Dental Cements / Q000737:chemistry*; D004338:Drug Combinations; D006801:Humans; D008422:Materials Testing; D010087:Oxides / Q000737:chemistry*; D015203:Reproducibility of Results; D012387:Root Canal Filling Materials / Q000737:chemistry; D018915:Root Canal Preparation / Q000379:methods; D017640:Silicates / Q000737:chemistry*; D018709:Statistics, Nonparametric; D013997:Time Factors
D017607:Aluminum Compounds; D017610:Calcium Compounds; D003738:Dental Cements; D004338:Drug Combinations; C475480:MTA-Angelus; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; C506393:tricalcium silicate; C031293:calcium silicate; D001729:Bismuth