Advances in Clinical and Experimental Medicine

Title abbreviation: Adv Clin Exp Med
JCR Impact Factor (IF) – 2.1
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ISSN 1899–5276 (print)
ISSN 2451-2680 (online)
Periodicity – monthly

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Advances in Clinical and Experimental Medicine

2017, vol. 26, nr 3, May-June, p. 387–392

doi: 10.17219/acem/60440

Publication type: original article

Language: English

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A laboratory study evaluating the pH of various modern root canal filling materials

Małgorzata Pawińska1,A,B,C,E,F, Grzegorz Szczurko1,C,D, Anna Kierklo2,A,B, Jarosław Sidun3,B

1 Department of Conservative Dentistry, Medical University of Bialystok, Poland

2 Department of Dentistry Propaedeutics, Medical University of Bialystok, Poland

3 Department of Materials Science and Biomedical Engineering, Bialystok University of Technology, Poland

Abstract

Background. Alkaline pH is responsible for antibacterial activity and the stimulation of periapical tissue healing. It neutralizes the acidic environment of inflammatory tissues in the periapical region of the teeth and favors bone repair by activating tissue enzymes.
Objectives. The aim of this study was to evaluate and compare in vitro the pH of 8 root canal filling materials (sealers and points) -AH Plus Jet (AH), Apexit Plus (AP), Endomethasone N (END), Epiphany (EP), GuttaFlow (GF), gutta-percha (G), Resilon (R), Tubliseal (T).
Material and Methods. 0.1 g of each material (n = 6) was placed in dialysis tubes and immersed in 20 mL of deionized water. The control contained deionized water (pH 6.6) with an empty tube. The pH values were recorded immediately after immersion (baseline) and after 1, 2, 24, 48, 120, and 192 h with a pH-meter. Data were statistically analyzed using the Student’s -t test and 1-way analysis of variance (p < 0.05).
Results. Nearly all the materials had pH significantly higher than the control (p < 0.05). There were significant differences in the pH between the materials tested at each time point (p < 0.001). The highest pH was exhibited by EP, followed by AP and AH. The lowest pH was shown by GF, G and R.
Conclusion. Among the materials studied, only EP, AP and AH Plus were able to elevate the pH level that would allow inactivation of microorganisms in the root canals and promote healing of inflamed periapical tissues. However, the low alkalizing potential of G and R can be modified by the concomitant application of sealers producing alkaline pH.

Key words

pH, endodontics, hydroxyl ion release, root canal obturation

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