Comparison of the sealing ability of mineral trioxide aggregate and Portland cement used as root-end filling materials

Inadequate apical seal is the major cause of surgical endodontic failure. The root-end filling material used should prevent egress of potential contaminants into periapical tissue. The purpose of this study was to compare the sealing ability of four root-end filling materials: white mineral trioxide...

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Bibliographic Details
Published in:Journal of Oral Science 2011, Vol.53(4), pp.517-522
Main Authors: Shahi, Shahriar, Yavari, Hamid R., Rahimi, Saeed, Eskandarinezhad, Mahsa, Shakouei, Sahar, Unchi, Mahsa
Format: Article
Language:English
Subjects:
Aluminum Compounds
Analysis of Variance
Calcium Compounds
Contrast Media
Dental Cements
Dental Leakage - prevention & control
Dentistry
Drug Combinations
Humans
Materials Testing
microleakage
Mineral trioxide aggregate
Oxides
Portland cement
Retrograde Obturation - methods
Root Canal Filling Materials
root-end filling material
Silicates
Statistics, Nonparametric
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Summary:Inadequate apical seal is the major cause of surgical endodontic failure. The root-end filling material used should prevent egress of potential contaminants into periapical tissue. The purpose of this study was to compare the sealing ability of four root-end filling materials: white mineral trioxide aggregate (MTA), gray MTA, white Portland cement (PC) and gray PC by dye leakage test. Ninety-six human single-rooted teeth were instrumented, and obturated with gutta-percha. After resecting the apex, an apical cavity was prepared. The teeth were randomly divided into four experimental groups (A: white MTA, B: gray MTA, C: white PC and D: gray PC; n = 20) and two control groups (positive and negative control groups; n = 8). Root-end cavities in the experimental groups were filled with the experimental materials. The teeth were exposed to Indian ink for 72 hours. The extent of dye penetration was measured with a stereomicroscope at 16× magnification. The negative controls showed no dye penetration and dye penetration was seen in the entire root-end cavity of positive controls. However, there was no statistically significant difference among the four experimental groups (P > 0.05). All retrograde filling materials tested in this study showed the same microleakage in vitro. Given the low cost and apparently similar sealing ability of PC, PC could be considered as a substitute for MTA as a root-end filling material. (J Oral Sci 53, 517-522, 2011)
ISSN:1343-4934
1880-4926
DOI:10.2334/josnusd.53.517