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Information Journal Paper

Title

EFFECT OF ACIDIC ENVIRONMENT ON THE PUSH-OUT BOND STRENGTH OF CALCIUM-ENRICHED MIXTURE CEMENT

Pages

  266-270

Abstract

 Introduction: This laboratory study was performed to evaluate the effect of different acidic pH values on the PUSH-OUT BOND STRENGTH of CALCIUM-ENRICHED MIXTURE (CEM) cement. Methods and Materials: Forty-eight root dentin slices were obtained from freshly extracted single rooted human teeth and their lumen were instrumented to achieve a diameter of 1.3 mm. Then, CEM CEMENT was mixed according to manufacturers’ instruction and placed in the lumens with minimal pressure. The specimens were randomly divided into four groups (n=12) which were wrapped in pieces of gauze soaked in either synthetic tissue fluid (STF) (pH=7.4) or butyric acid which was buffered at pH values of 4.4, 5.4 and 6.4. They were then incubated for 4 days at 37°C. The push-out test was performed by means of the universal testing machine. Specimens were then examined under a digital light microscope at 20´ magnification to determine the nature of the bond failure. The data were analyzed using the Kruskal-Wallis test followed by Dunn’s test for pairwise comparisons. Results: The highest PUSH-OUT BOND STRENGTH (10.19±4.39) was seen in the pH level of 6.4, which was significantly different from the other groups (P<0.05). The values decreased to 2.42±2.25 MPa after exposure to pH value of 4.4. Conclusion: Lower pH value of highly ACIDIC ENVIRONMENTs (pH=4.4), adversely affects the force needed for displacement of CEM CEMENT; while in higher pH values (pH=6.4) the bond-strength was not affected. CEM CEMENT is recommended in clinical situations where exposure to ACIDIC ENVIRONMENT is unavoidable.

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    • Cite

    APA: Copy

    SOBHNAMAYAN, FERESHTEH, SAHEBI, SAFOORA, NADERI, MISAGH, SHOJAEE, NOOSHIN SADAT, & SHANBEZADEH, NAJMEH. (2014). EFFECT OF ACIDIC ENVIRONMENT ON THE PUSH-OUT BOND STRENGTH OF CALCIUM-ENRICHED MIXTURE CEMENT. IRANIAN ENDODONTIC JOURNAL (IEJ), 9(4), 266-270. SID. https://sid.ir/paper/302831/en

    Vancouver: Copy

    SOBHNAMAYAN FERESHTEH, SAHEBI SAFOORA, NADERI MISAGH, SHOJAEE NOOSHIN SADAT, SHANBEZADEH NAJMEH. EFFECT OF ACIDIC ENVIRONMENT ON THE PUSH-OUT BOND STRENGTH OF CALCIUM-ENRICHED MIXTURE CEMENT. IRANIAN ENDODONTIC JOURNAL (IEJ)[Internet]. 2014;9(4):266-270. Available from: https://sid.ir/paper/302831/en

    IEEE: Copy

    FERESHTEH SOBHNAMAYAN, SAFOORA SAHEBI, MISAGH NADERI, NOOSHIN SADAT SHOJAEE, and NAJMEH SHANBEZADEH, “EFFECT OF ACIDIC ENVIRONMENT ON THE PUSH-OUT BOND STRENGTH OF CALCIUM-ENRICHED MIXTURE CEMENT,” IRANIAN ENDODONTIC JOURNAL (IEJ), vol. 9, no. 4, pp. 266–270, 2014, [Online]. Available: https://sid.ir/paper/302831/en

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