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Year : 1991  |  Volume : 3  |  Issue : 1  |  Page : 5-7

Evaluation of the pH changes in the surrounding periapical medium using various root canal sealants

1 Dean, Professor and Head, Nair Hospital Dental College, Bombay, India
2 P.G. Student, Deptt. of Operative Dentistry, Nair Hospital Dental College, Bombay, India

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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0970-7212.351017

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An in vitro study was undertaken to compare the influence of two root canal sealers on the pH of the surrounding periapical medium. The teeth were divided into 3 groups of 25 teeth each. Group 1 & II consisted of root-canals obturated with laterally condensed gutta-percha with zinc oxide and sealapex (calcium hydroxide based sealant) respectively. In group III, root-canals were prepared, but not obturated. An additional group of normal saline was used to monitor the pH changes in other groups. Group III and IV both served as controls. Digital-pH-meter was used to measure the pH of different groups at 1 hr, 4 hr, 1 day, 2 days, 4 days and 7 days after immersion of the specimens. The mean pH was found out for all four groups and statistical analysis was carried out using 'T test. Sealapex was found to significantly raise the pH of the surrounding medium (7.00 to 10.47-10.55) compared to zinc oxide eugenol sealer (7.00-7.77-7.85)

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