In Vitro Evaluation of Push-out Bond Strength of Mineral Trioxide Aggregate at Middle third of the Root after One Week and 1and 2 Months

Document Type : Original Article


1 Department of Endodontics, Dental School, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

2 Department of Endodontics, Dental School, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

3 Private Practice


Background and Objective: Severalmaterials are used for retrograde treatment and perforations repair. Mineral trioxide aggregate has been widely used as a promising biomaterial to repair root perforations because of its excellent biocompatibility, high sealing abilities, ability to set in the presence of blood and induction of dentin, bone and cement. The aim of this study was to evaluate the push-out strength of MTA-dentin in the middle third of the root.
Subjects and Methods: This in vitro study was performed on 60 human single-rooted teeth. After preparation, the specimens were randomly divided into 3 groups (n=20, for each period of assessment) and soaked in synthetic tissue fluid (STF) (pH= 7.4). The push-out bond strengths were then measured by using a universal testing machine after one week and 1and 2 months of  use. Data were analyzed by SPSS software (version 13) and ANOVA and Tukey statistical tests.
Results: Average push-out bond strength at the first week specimens was 2.3157 Megapascal which was more than the average after the first month (0.125) and two months (0.12). There were significant differences between the average push-out bond strength after one week,one  month and two month  (P<0.001).
Conclusion: With passage of time from one week to two months the push-out bond strength of MTA is decreased.


-Torabinejad M, Corr R, Handysides R, Shabahang S. Outcomes of nonsurgical retreatment and endodontic surgery: a systematic review. J Endod 2009;35(7):930-7.
2-Nash KD, Brown LJ, Hicks ML. Private practicing endodontists: production of endodontic services and implications for workforce policy. J Endod 2002;28(10):699–705.
3-Chong B. A surgical alternative. Managing Endodontic Failure Practice 2004;123-47.
4-Lee YL, Lee BS, Lin FH, Yun Lin A, Lan WH, Lin CP. Effects of physiological environments on the hydration behavior of mineral trioxide aggregate. Biomaterials. 2004;25(5):787–93.
5-Kratchman SI. Perforation repair and one-step apexification procedures. Dent Clin North Am 2004;48(1):291–307.
6-Roberts HW, Toth JM, Berzins DW, Charlton DG. Mineral trioxide aggregate material use in endodontic treatment: a review of the literature. Dent Mater 2008;24(2):149-64.
7-Gancedo-Caravia L, Garcia-Barbero E. Influence of humidity and setting time on the push-out strength of mineral trioxide aggregate obturations. J Endod 2006;32(9):894-6.
8-Apaydin ES, Shabahang S, Torabinejad M. Hard-tissue healing after application of fresh or set MTA as root-end-filling material. J Endod 2004;30(1):21–4.
9-Ferris DM, Baumgartner JC. Perforation repair comparing two types of mineral trioxide aggregate. J Endod 2004;30(6):422–4.
10-Hardy I, Liewehr FR, Joyce AP, Agee K, Pashley DH. Sealing ability of One-Up Bond and MTA with and without a secondary seal as furcation perforation repair materials. J Endod 2004;30(9):658–61.
11-Abdullah D, Ford TR, Papaioannou S, Nicholson J, McDonald F. An evaluation of accelerated Portland cement as a restorative material. Biomaterials 2002;23(19):4001-10.
12-de Vasconcelos B, Bernardes RA, Cruz SM, Duarte MA, Padilha Pde M, Bernardineli N, et al. Evaluation of pH and calcium ion release of new root-end filling materials. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2009;108(1):135–9.
13-Agrabawi J. Sealing ability of amalgam, super EBA cement, and MTA when used as retrograde filling materials. Br Dent J 2000;188(5):266–8.
14-Reyes-Carmona JF, Felippe MS, Felippe WT. Biomineralization ability and interaction of mineral trioxide aggregate and white portland cement with dentin in a phosphate-containing fluid. J Endod 2009;35(5):731-6.
15-Sarkar N, Caicedo R, Ritwik P, Moiseyeva R, Kawashima I. Physicochemical basis of the biologic properties of mineral trioxide aggregate. J Endod 2005;31(2):97-100.
16-Camilleri J, Montesin FE, Juszczyk AS, Papaioannou S, Curtis RV, Donald FM, et al. The constitution, physical properties and biocompatibility of modified accelerated cement. Dent Mater 2008;24(3):341-50.
17-Yazdizadeh M, Gholamipoor M. Quantitative Evaluation of shear bond strength between MTA and dentin in three different time periods [dissertation]. Ahvaz: Ahvaz Jundishapur University Of Medical Sciences; 2007. [In Persian].
18-Saghiri MA, Shokouhinejad N, Lotfi M, Aminsobhani M, Saghiri AM. Push-out bond strength of mineral trioxide aggregate in the presence of alkaline pH. J Endod 2010;36(11):1856-9.
19-Coleman NJ, Nicholson JW, Awosanya K. A preliminary investigation of the in vitro bioactivity of white Portland cement. Cement Concrete Res 2007;37(11):1518-23.
20-Taddei P, Tinti A, Gandolfi MG, Rossi PL, Prati C. Ageing of calcium silicate cements for endodontic use in simulated body fluids: a micro Raman study. J Raman Spectroscopy 2009;40(12):1858-66.
21-Gandolfi MG, Iacono F, Agee K, Siboni F, Tay F, Pashley DH, et al. Setting time and expansion in different soaking media of experimental accelerated calcium-silicate cements and ProRoot MTA. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2009;108(6):e39-45.
22-Camilleri J, Montesin FE, Di Silvio L, Pitt Ford TR. The chemical constitution and biocompatibility of accelerated Portland cement for endodontic use. Int Endod J 2005;38(11):834-42.
23-Duarte MA, Demarchi AC, Yamashita JC, Kuga MC, Fraga Sde C. pH and calcium ion release of 2 root-end filling materials. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2003;95(3):345-7.
24-Santos AD, Moraes JC, Araújo EB, Yukimitu K, Valério Filho WV. Physico‐chemical properties of MTA and a novel experimental cement. Int Endod J 2005;38(7):443-7.