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document
An evaluation of sealing ability of calcium hydroxide sealers . Solid core filling material such as gutta-percha has been used to fill the root canal in conjunction with a sealer to prevent apical leakage . The purpose of this study was to compare apical seal of five different root canal sealers . Sixty roots of maxillary central incisors were cleansed and shaped and randomly assigned to one of six groups of ten roots each . The root canals were obturated with gutta-percha and one of the sealers by the lateral-vertical condensation technique . Groups I , II , III , IV , and V consisted of roots in which the canal was filled with gutta-percha along with either Roth 's sealer , AH26 , Sealapex , CRCS , or Nogenol sealer , respectively . Group VI was filled with gutta-percha and without sealer to serve as a control . The access opening was filled with amalgam . Each tooth was then placed in a capped vial containing 2 X 2 inch gauze pads saturated with distilled water , and the sealer was allowed to set at 37 degrees C in the humidor for 48 hours . The roots , except for the apical 2 mm , were coated with two layers of nail polish . The roots were stained with india ink , decalcified , dehydrated , and then placed in methylsalicylate to make them transparent . The leakage was measured with a filar micrometer eyepiece under a dissecting microscope . The mean apical leakage of six groups was as follows : I = 0.45 mm , II = 0.277 mm , III = 0.343 mm , IV = 0.263 mm , V = 0.336 mm , and VI = 2.310 mm . Results showed no significant difference in the apical seal produced by gutta-percha and the tested root canal sealers . ( ABSTRACT TRUNCATED AT 250 WORDS )
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Intervention_Pharmacological
calcium hydroxide sealers
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Intervention_Surgical
apical seal
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Intervention_Pharmacological
root canal sealers
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Intervention_Pharmacological
gutta-percha
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Intervention_Physical
sealers
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Intervention_Physical
canal was filled with gutta-percha along with either Roth 's sealer , AH26 , Sealapex , CRCS , or Nogenol sealer , respectively
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Intervention_Control
filled with gutta-percha and without sealer
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Intervention_Pharmacological
amalgam
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Outcome_Other
sealing ability
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Outcome_Physical
mean apical leakage