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Comparison of the calcified barrier formed by calcium hydroxide paste and MTA during apexification procedure | ||
| Journal of baghdad college of dentistry | ||
| Article 1, Volume 22, Issue 1, 2010, Pages 98-100 | ||
| Author | ||
| Sarah T. AbdulQader | ||
| Abstract | ||
| ABSTRACTBackground: Apexification had been found to be high effective in the management of immature necroticpermanent teeth. It is the induction of an apical calcified barrier or the creation of an artificial barrier across an openapex against which filling material can be packed. The aim of this study was to evaluate appearance, thickness,and time needed for the apical calcified barrier formation by using calcium hydroxide paste and MTA.Materials and Methods: Forty premolars with single root canals were prepared to simulate an open apex of 1mmdiameter. These roots were divided into 2 groups: group A consists of 20 roots filled with Ca(OH)2 paste and group Bconsists of 20 roots filled with MTA. Each root was placed in a polyethylene vial containing synthetic tissue fluid. Thepresence of apical calcified barrier of each root was checked at weeks 1, 2, 3, 4, 5, 6, 7, and 8. At the end of the testperiod, each root was taken out and the thickness of the formed apical calcified barrier was measured by vernier.Results: All samples have calcified barrier at the end of 8 weeks. This barrier formed in 55% of the roots filled withCa(OH)2 paste at the beginning of 3rd week and in 40% of the roots filled with MTA at the beginning of 5th week. Thecalcified barrier that formed by Ca(OH)2 paste had a chalky and irregular surface while that formed by MTA had aglassy and regular surface. There was a highly significant difference in the thickness of this barrier between these twogroups.Conclusions: The apical calcified barrier can be formed without the involvement of Hertwig’s epithelial root sheath.There was a difference in the appearance of the calcified barrier formed by Ca(OH)2 paste and MTA. The apicalcalcified barrier formed earlier and faster and was thicker in the roots filled with Ca(OH)2 paste as compared withthose filled with MTA.Keywords: Apexification, Calcium hydroxide past, MTA. J Bagh Coll Dentistry 2010; 22(1):98-100. | ||
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